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Message-Id: <1419198808-5818-1-git-send-email-contact@efxa.org>
Date: Sun, 21 Dec 2014 23:53:28 +0200
From: Efstathios Chatzikyriakidis <contact@...a.org>
To: axboe@...nel.dk
Cc: linux-kernel@...r.kernel.org,
Efstathios Chatzikyriakidis <contact@...a.org>
Subject: [PATCH] CDROM: cdrom: Applying checkpatch rules against cdrom.c file.
Apply the rules of checkpatch perl script against cdrom.c file.
Signed-off-by: Efstathios Chatzikyriakidis <contact@...a.org>
---
drivers/cdrom/cdrom.c | 385 +++++++++++++++++++++++++++++--------------------
1 file changed, 225 insertions(+), 160 deletions(-)
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index 5d28a45..2a30672 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -63,8 +63,8 @@
2.12 Jan 24, 1998 -- Erik Andersen <andersee@...ian.org>
-- Fixed a bug in the IOCTL_IN and IOCTL_OUT macros. It turns out that
- copy_*_user does not return EFAULT on error, but instead returns the number
- of bytes not copied. I was returning whatever non-zero stuff came back from
+ copy_*_user does not return EFAULT on error, but instead returns the number
+ of bytes not copied. I was returning whatever non-zero stuff came back from
the copy_*_user functions directly, which would result in strange errors.
2.13 July 17, 1998 -- Erik Andersen <andersee@...ian.org>
@@ -78,7 +78,7 @@
2.14 August 17, 1998 -- Erik Andersen <andersee@...ian.org>
-- Fixed a bug in cdrom_media_changed and handling of reporting that
- the media had changed for devices that _don't_ implement media_changed.
+ the media had changed for devices that _don't_ implement media_changed.
Thanks to Grant R. Guenther <grant@...que.net> for spotting this bug.
-- Made a few things more pedanticly correct.
@@ -86,12 +86,12 @@
-- New maintainers! Erik was too busy to continue the work on the driver,
so now Chris Zwilling <chris@...udnet.com> and Jens Axboe <axboe@...ge.dk>
will do their best to follow in his footsteps
-
+
2.51 Dec 20, 1998 - Jens Axboe <axboe@...ge.dk>
-- Check if drive is capable of doing what we ask before blindly changing
cdi->options in various ioctl.
-- Added version to proc entry.
-
+
2.52 Jan 16, 1999 - Jens Axboe <axboe@...ge.dk>
-- Fixed an error in open_for_data where we would sometimes not return
the correct error value. Thanks Huba Gaspar <huba@...tcell.hu>.
@@ -100,7 +100,7 @@
modules had entries in dev. Feb 02 - real bug was in sysctl.c where
dev would be removed even though it was used. cdrom.c just illuminated
that bug.
-
+
2.53 Feb 22, 1999 - Jens Axboe <axboe@...ge.dk>
-- Fixup of several ioctl calls, in particular CDROM_SET_OPTIONS has
been "rewritten" because capabilities and options aren't in sync. They
@@ -110,16 +110,16 @@
-- Added CDROM_DEBUG ioctl. Enable debug messages on-the-fly.
-- Added CDROM_GET_CAPABILITY ioctl. This relieves userspace programs
from parsing /proc/sys/dev/cdrom/info.
-
+
2.54 Mar 15, 1999 - Jens Axboe <axboe@...ge.dk>
-- Check capability mask from low level driver when counting tracks as
per suggestion from Corey J. Scotts <cstotts@...e.weeg.uiowa.edu>.
-
+
2.55 Apr 25, 1999 - Jens Axboe <axboe@...ge.dk>
-- autoclose was mistakenly checked against CDC_OPEN_TRAY instead of
CDC_CLOSE_TRAY.
-- proc info didn't mask against capabilities mask.
-
+
3.00 Aug 5, 1999 - Jens Axboe <axboe@...ge.dk>
-- Unified audio ioctl handling across CD-ROM drivers. A lot of the
code was duplicated before. Drives that support the generic packet
@@ -137,13 +137,13 @@
-- Now default to checking media type.
-- CDROM_SEND_PACKET ioctl added. The infrastructure was in place for
doing this anyway, with the generic_packet addition.
-
+
3.01 Aug 6, 1999 - Jens Axboe <axboe@...ge.dk>
-- Fix up the sysctl handling so that the option flags get set
correctly.
-- Fix up ioctl handling so the device specific ones actually get
called :).
-
+
3.02 Aug 8, 1999 - Jens Axboe <axboe@...ge.dk>
-- Fixed volume control on SCSI drives (or others with longer audio
page).
@@ -152,7 +152,7 @@
DVD structures and ioctls in the first place! He designed the original
DVD patches for ide-cd and while I rearranged and unified them, the
interface is still the same.
-
+
3.03 Sep 1, 1999 - Jens Axboe <axboe@...ge.dk>
-- Moved the rest of the audio ioctls from the CD-ROM drivers here. Only
CDROMREADTOCENTRY and CDROMREADTOCHDR are left.
@@ -177,7 +177,7 @@
for ide-cd to handle multisession discs.
-- Export cdrom_mode_sense and cdrom_mode_select.
-- init_cdrom_command() for setting up a cgc command.
-
+
3.05 Oct 24, 1999 - Jens Axboe <axboe@...ge.dk>
-- Changed the interface for CDROM_SEND_PACKET. Before it was virtually
impossible to send the drive data in a sensible way.
@@ -210,7 +210,7 @@
DVD_HOST_SEND_RPC_STATE did not set buffer size in cdb, and
dvd_do_auth passed uninitialized data to drive because init_cdrom_command
did not clear a 0 sized buffer.
-
+
3.09 May 12, 2000 - Jens Axboe <axboe@...e.de>
-- Fix Video-CD on SCSI drives that don't support READ_CD command. In
that case switch block size and issue plain READ_10 again, then switch
@@ -262,8 +262,18 @@
/* Define this to remove _all_ the debugging messages */
/* #define ERRLOGMASK CD_NOTHING */
#define ERRLOGMASK CD_WARNING
-/* #define ERRLOGMASK (CD_WARNING|CD_OPEN|CD_COUNT_TRACKS|CD_CLOSE) */
-/* #define ERRLOGMASK (CD_WARNING|CD_REG_UNREG|CD_DO_IOCTL|CD_OPEN|CD_CLOSE|CD_COUNT_TRACKS) */
+
+/* #define ERRLOGMASK (CD_WARNING |
+ CD_OPEN |
+ CD_COUNT_TRACKS |
+ CD_CLOSE) */
+
+/* #define ERRLOGMASK (CD_WARNING |
+ CD_REG_UNREG |
+ CD_DO_IOCTL |
+ CD_OPEN |
+ CD_CLOSE |
+ CD_COUNT_TRACKS) */
#include <linux/module.h>
#include <linux/fs.h>
@@ -272,7 +282,7 @@
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/mm.h>
-#include <linux/slab.h>
+#include <linux/slab.h>
#include <linux/cdrom.h>
#include <linux/sysctl.h>
#include <linux/proc_fs.h>
@@ -282,12 +292,12 @@
#include <linux/blkdev.h>
#include <linux/times.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
/* used to tell the module to turn on full debugging messages */
static bool debug;
/* default compatibility mode */
-static bool autoclose=1;
+static bool autoclose = 1;
static bool autoeject;
static bool lockdoor = 1;
/* will we ever get to use this... sigh. */
@@ -303,14 +313,14 @@ module_param(mrw_format_restart, bool, 0);
static DEFINE_MUTEX(cdrom_mutex);
-static const char *mrw_format_status[] = {
+static const char * const mrw_format_status[] = {
"not mrw",
"bgformat inactive",
"bgformat active",
"mrw complete",
};
-static const char *mrw_address_space[] = { "DMA", "GAA" };
+static const char * const mrw_address_space[] = { "DMA", "GAA" };
#if (ERRLOGMASK != CD_NOTHING)
#define cd_dbg(type, fmt, ...) \
@@ -455,7 +465,8 @@ static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write)
cgc.cmd[8] = sizeof(buffer);
cgc.quiet = 1;
- if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
+ ret = cdi->ops->generic_packet(cdi, &cgc);
+ if (ret)
return ret;
mfd = (struct mrw_feature_desc *)&buffer[sizeof(struct feature_header)];
@@ -463,7 +474,8 @@ static int cdrom_is_mrw(struct cdrom_device_info *cdi, int *write)
return 1;
*write = mfd->write;
- if ((ret = cdrom_mrw_probe_pc(cdi))) {
+ ret = cdrom_mrw_probe_pc(cdi);
+ if (ret) {
*write = 0;
return ret;
}
@@ -536,7 +548,7 @@ static int cdrom_mrw_exit(struct cdrom_device_info *cdi)
int ret;
ret = cdrom_get_disc_info(cdi, &di);
- if (ret < 0 || ret < (int)offsetof(typeof(di),disc_type))
+ if (ret < 0 || ret < (int)offsetof(typeof(di), disc_type))
return 1;
ret = 0;
@@ -639,6 +651,7 @@ int register_cdrom(struct cdrom_device_info *cdi)
mutex_unlock(&cdrom_mutex);
return 0;
}
+EXPORT_SYMBOL(register_cdrom);
#undef ENSURE
void unregister_cdrom(struct cdrom_device_info *cdi)
@@ -655,6 +668,7 @@ void unregister_cdrom(struct cdrom_device_info *cdi)
cdi->ops->n_minors--;
cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
}
+EXPORT_SYMBOL(unregister_cdrom);
int cdrom_get_media_event(struct cdrom_device_info *cdi,
struct media_event_desc *med)
@@ -682,6 +696,7 @@ int cdrom_get_media_event(struct cdrom_device_info *cdi,
memcpy(med, &buffer[sizeof(*eh)], sizeof(*med));
return 0;
}
+EXPORT_SYMBOL(cdrom_get_media_event);
static int cdrom_get_random_writable(struct cdrom_device_info *cdi,
struct rwrt_feature_desc *rfd)
@@ -697,10 +712,11 @@ static int cdrom_get_random_writable(struct cdrom_device_info *cdi,
cgc.cmd[8] = sizeof(buffer); /* often 0x18 */
cgc.quiet = 1;
- if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
+ ret = cdi->ops->generic_packet(cdi, &cgc);
+ if (ret)
return ret;
- memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof (*rfd));
+ memcpy(rfd, &buffer[sizeof(struct feature_header)], sizeof(*rfd));
return 0;
}
@@ -718,7 +734,8 @@ static int cdrom_has_defect_mgt(struct cdrom_device_info *cdi)
cgc.cmd[8] = sizeof(buffer);
cgc.quiet = 1;
- if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
+ ret = cdi->ops->generic_packet(cdi, &cgc);
+ if (ret)
return ret;
feature_code = (__be16 *) &buffer[sizeof(struct feature_header)];
@@ -736,7 +753,8 @@ static int cdrom_is_random_writable(struct cdrom_device_info *cdi, int *write)
*write = 0;
- if ((ret = cdrom_get_random_writable(cdi, &rfd)))
+ ret = cdrom_get_random_writable(cdi, &rfd);
+ if (ret)
return ret;
if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
@@ -788,7 +806,7 @@ static int cdrom_mrw_open_write(struct cdrom_device_info *cdi)
}
ret = cdrom_get_disc_info(cdi, &di);
- if (ret < 0 || ret < offsetof(typeof(di),disc_type))
+ if (ret < 0 || ret < offsetof(typeof(di), disc_type))
return 1;
if (!di.erasable)
@@ -844,12 +862,13 @@ static int mo_open_write(struct cdrom_device_info *cdi)
static int cdrom_ram_open_write(struct cdrom_device_info *cdi)
{
struct rwrt_feature_desc rfd;
- int ret;
+ int ret = cdrom_has_defect_mgt(cdi);
- if ((ret = cdrom_has_defect_mgt(cdi)))
+ if (ret)
return ret;
- if ((ret = cdrom_get_random_writable(cdi, &rfd)))
+ ret = cdrom_get_random_writable(cdi, &rfd);
+ if (ret)
return ret;
else if (CDF_RWRT == be16_to_cpu(rfd.feature_code))
ret = !rfd.curr;
@@ -872,10 +891,9 @@ static void cdrom_mmc3_profile(struct cdrom_device_info *cdi)
cgc.cmd[8] = sizeof(buffer); /* Allocation Length */
cgc.quiet = 1;
- if ((ret = cdi->ops->generic_packet(cdi, &cgc)))
- mmc3_profile = 0xffff;
- else
- mmc3_profile = (buffer[6] << 8) | buffer[7];
+ ret = cdi->ops->generic_packet(cdi, &cgc);
+
+ mmc3_profile = ret ? 0xffff : (buffer[6] << 8) | buffer[7];
cdi->mmc3_profile = mmc3_profile;
}
@@ -907,7 +925,7 @@ static int cdrom_open_write(struct cdrom_device_info *cdi)
ram_write = 1;
else
(void) cdrom_is_random_writable(cdi, &ram_write);
-
+
if (mrw)
cdi->mask &= ~CDC_MRW;
else
@@ -927,9 +945,13 @@ static int cdrom_open_write(struct cdrom_device_info *cdi)
ret = cdrom_mrw_open_write(cdi);
else if (CDROM_CAN(CDC_DVD_RAM))
ret = cdrom_dvdram_open_write(cdi);
- else if (CDROM_CAN(CDC_RAM) &&
- !CDROM_CAN(CDC_CD_R|CDC_CD_RW|CDC_DVD|CDC_DVD_R|CDC_MRW|CDC_MO_DRIVE))
- ret = cdrom_ram_open_write(cdi);
+ else if (CDROM_CAN(CDC_RAM) && !CDROM_CAN(CDC_CD_R |
+ CDC_CD_RW |
+ CDC_DVD |
+ CDC_DVD_R |
+ CDC_MRW |
+ CDC_MO_DRIVE))
+ ret = cdrom_ram_open_write(cdi);
else if (CDROM_CAN(CDC_MO_DRIVE))
ret = mo_open_write(cdi);
else if (!cdrom_is_dvd_rw(cdi))
@@ -990,6 +1012,7 @@ static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype *tracks)
struct cdrom_tochdr header;
struct cdrom_tocentry entry;
int ret, i;
+
tracks->data = 0;
tracks->audio = 0;
tracks->cdi = 0;
@@ -1020,9 +1043,9 @@ static void cdrom_count_tracks(struct cdrom_device_info *cdi, tracktype *tracks)
tracks->xa++;
else
tracks->data++;
- } else {
+ } else
tracks->audio++;
- }
+
cd_dbg(CD_COUNT_TRACKS, "track %d: format=%d, ctrl=%d\n",
i, entry.cdte_format, entry.cdte_ctrl);
}
@@ -1037,6 +1060,7 @@ int open_for_data(struct cdrom_device_info *cdi)
int ret;
struct cdrom_device_ops *cdo = cdi->ops;
tracktype tracks;
+
cd_dbg(CD_OPEN, "entering open_for_data\n");
/* Check if the driver can report drive status. If it can, we
can do clever things. If it can't, well, we at least tried! */
@@ -1049,35 +1073,35 @@ int open_for_data(struct cdrom_device_info *cdi)
if (CDROM_CAN(CDC_CLOSE_TRAY) &&
cdi->options & CDO_AUTO_CLOSE) {
cd_dbg(CD_OPEN, "trying to close the tray\n");
- ret=cdo->tray_move(cdi,0);
+ ret = cdo->tray_move(cdi, 0);
if (ret) {
cd_dbg(CD_OPEN, "bummer. tried to close the tray but failed.\n");
/* Ignore the error from the low
level driver. We don't care why it
- couldn't close the tray. We only care
- that there is no disc in the drive,
+ couldn't close the tray. We only care
+ that there is no disc in the drive,
since that is the _REAL_ problem here.*/
- ret=-ENOMEDIUM;
+ ret = -ENOMEDIUM;
goto clean_up_and_return;
}
} else {
cd_dbg(CD_OPEN, "bummer. this drive can't close the tray.\n");
- ret=-ENOMEDIUM;
+ ret = -ENOMEDIUM;
goto clean_up_and_return;
}
/* Ok, the door should be closed now.. Check again */
ret = cdo->drive_status(cdi, CDSL_CURRENT);
- if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
+ if ((ret == CDS_NO_DISC) || (ret == CDS_TRAY_OPEN)) {
cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n");
cd_dbg(CD_OPEN, "tray might not contain a medium\n");
- ret=-ENOMEDIUM;
+ ret = -ENOMEDIUM;
goto clean_up_and_return;
}
cd_dbg(CD_OPEN, "the tray is now closed\n");
}
/* the door should be closed now, check for the disc */
ret = cdo->drive_status(cdi, CDSL_CURRENT);
- if (ret!=CDS_DISC_OK) {
+ if (ret != CDS_DISC_OK) {
ret = -ENOMEDIUM;
goto clean_up_and_return;
}
@@ -1085,24 +1109,24 @@ int open_for_data(struct cdrom_device_info *cdi)
cdrom_count_tracks(cdi, &tracks);
if (tracks.error == CDS_NO_DISC) {
cd_dbg(CD_OPEN, "bummer. no disc.\n");
- ret=-ENOMEDIUM;
+ ret = -ENOMEDIUM;
goto clean_up_and_return;
}
/* CD-Players which don't use O_NONBLOCK, workman
* for example, need bit CDO_CHECK_TYPE cleared! */
- if (tracks.data==0) {
+ if (tracks.data == 0) {
if (cdi->options & CDO_CHECK_TYPE) {
- /* give people a warning shot, now that CDO_CHECK_TYPE
- is the default case! */
- cd_dbg(CD_OPEN, "bummer. wrong media type.\n");
- cd_dbg(CD_WARNING, "pid %d must open device O_NONBLOCK!\n",
- (unsigned int)task_pid_nr(current));
- ret=-EMEDIUMTYPE;
- goto clean_up_and_return;
- }
- else {
- cd_dbg(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set\n");
- }
+ /* give people a warning shot, now that
+ CDO_CHECK_TYPE is the default case! */
+ cd_dbg(CD_OPEN, "bummer. wrong media type.\n");
+ cd_dbg(CD_WARNING,
+ "pid %d must open device O_NONBLOCK!\n",
+ (unsigned int) task_pid_nr(current));
+
+ ret = -EMEDIUMTYPE;
+ goto clean_up_and_return;
+ } else
+ cd_dbg(CD_OPEN, "wrong media type, but CDO_CHECK_TYPE not set\n");
}
cd_dbg(CD_OPEN, "all seems well, opening the devicen");
@@ -1111,7 +1135,7 @@ int open_for_data(struct cdrom_device_info *cdi)
ret = cdo->open(cdi, 0); /* open for data */
cd_dbg(CD_OPEN, "opening the device gave me %d\n", ret);
/* After all this careful checking, we shouldn't have problems
- opening the device, but we don't want the device locked if
+ opening the device, but we don't want the device locked if
this somehow fails... */
if (ret) {
cd_dbg(CD_OPEN, "open device failed\n");
@@ -1126,9 +1150,9 @@ int open_for_data(struct cdrom_device_info *cdi)
/* Something failed. Try to unlock the drive, because some drivers
(notably ide-cd) lock the drive after every command. This produced
- a nasty bug where after mount failed, the drive would remain locked!
- This ensures that the drive gets unlocked after a mount fails. This
- is a goto to avoid bloating the driver with redundant code. */
+ a nasty bug where after mount failed, the drive would remain locked!
+ This ensures that the drive gets unlocked after a mount fails. This
+ is a goto to avoid bloating the driver with redundant code. */
clean_up_and_return:
cd_dbg(CD_OPEN, "open failed\n");
if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
@@ -1193,15 +1217,17 @@ err:
cdi->use_count--;
return ret;
}
+EXPORT_SYMBOL(cdrom_open);
/* This code is similar to that in open_for_data. The routine is called
whenever an audio play operation is requested.
*/
-static int check_for_audio_disc(struct cdrom_device_info * cdi,
- struct cdrom_device_ops * cdo)
+static int check_for_audio_disc(struct cdrom_device_info *cdi,
+ struct cdrom_device_ops *cdo)
{
- int ret;
+ int ret;
tracktype tracks;
+
cd_dbg(CD_OPEN, "entering check_for_audio_disc\n");
if (!(cdi->options & CDO_CHECK_TYPE))
return 0;
@@ -1214,13 +1240,13 @@ static int check_for_audio_disc(struct cdrom_device_info * cdi,
if (CDROM_CAN(CDC_CLOSE_TRAY) &&
cdi->options & CDO_AUTO_CLOSE) {
cd_dbg(CD_OPEN, "trying to close the tray\n");
- ret=cdo->tray_move(cdi,0);
+ ret = cdo->tray_move(cdi, 0);
if (ret) {
cd_dbg(CD_OPEN, "bummer. tried to close tray but failed.\n");
/* Ignore the error from the low
level driver. We don't care why it
- couldn't close the tray. We only care
- that there is no disc in the drive,
+ couldn't close the tray. We only care
+ that there is no disc in the drive,
since that is the _REAL_ problem here.*/
return -ENOMEDIUM;
}
@@ -1230,22 +1256,22 @@ static int check_for_audio_disc(struct cdrom_device_info * cdi,
}
/* Ok, the door should be closed now.. Check again */
ret = cdo->drive_status(cdi, CDSL_CURRENT);
- if ((ret == CDS_NO_DISC) || (ret==CDS_TRAY_OPEN)) {
+ if ((ret == CDS_NO_DISC) || (ret == CDS_TRAY_OPEN)) {
cd_dbg(CD_OPEN, "bummer. the tray is still not closed.\n");
return -ENOMEDIUM;
- }
- if (ret!=CDS_DISC_OK) {
+ }
+ if (ret != CDS_DISC_OK) {
cd_dbg(CD_OPEN, "bummer. disc isn't ready.\n");
return -EIO;
- }
+ }
cd_dbg(CD_OPEN, "the tray is now closed\n");
- }
+ }
}
cdrom_count_tracks(cdi, &tracks);
- if (tracks.error)
- return(tracks.error);
+ if (tracks.error)
+ return tracks.error;
- if (tracks.audio==0)
+ if (tracks.audio == 0)
return -EMEDIUMTYPE;
return 0;
@@ -1288,8 +1314,9 @@ void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode)
cdo->tray_move(cdi, 1);
}
}
+EXPORT_SYMBOL(cdrom_release);
-static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
+static int cdrom_read_mech_status(struct cdrom_device_info *cdi,
struct cdrom_changer_info *buf)
{
struct packet_command cgc;
@@ -1329,12 +1356,13 @@ static int cdrom_slot_status(struct cdrom_device_info *cdi, int slot)
cd_dbg(CD_CHANGER, "entering cdrom_slot_status()\n");
if (cdi->sanyo_slot)
return CDS_NO_INFO;
-
+
info = kmalloc(sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
- if ((ret = cdrom_read_mech_status(cdi, info)))
+ ret = cdrom_read_mech_status(cdi, info);
+ if (ret)
goto out_free;
if (info->slots[slot].disc_present)
@@ -1347,10 +1375,10 @@ out_free:
return ret;
}
-/* Return the number of slots for an ATAPI/SCSI cdrom,
- * return 1 if not a changer.
+/* Return the number of slots for an ATAPI/SCSI cdrom,
+ * return 1 if not a changer.
*/
-int cdrom_number_of_slots(struct cdrom_device_info *cdi)
+int cdrom_number_of_slots(struct cdrom_device_info *cdi)
{
int status;
int nslots = 1;
@@ -1358,22 +1386,23 @@ int cdrom_number_of_slots(struct cdrom_device_info *cdi)
cd_dbg(CD_CHANGER, "entering cdrom_number_of_slots()\n");
/* cdrom_read_mech_status requires a valid value for capacity: */
- cdi->capacity = 0;
+ cdi->capacity = 0;
info = kmalloc(sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
- if ((status = cdrom_read_mech_status(cdi, info)) == 0)
+ status = cdrom_read_mech_status(cdi, info);
+ if (!status)
nslots = info->hdr.nslots;
kfree(info);
return nslots;
}
-
+EXPORT_SYMBOL(cdrom_number_of_slots);
/* If SLOT < 0, unload the current slot. Otherwise, try to load SLOT. */
-static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
+static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
{
struct packet_command cgc;
@@ -1387,7 +1416,7 @@ static int cdrom_load_unload(struct cdrom_device_info *cdi, int slot)
cgc.cmd[8] = slot;
cgc.timeout = 60 * HZ;
- /* The Sanyo 3 CD changer uses byte 7 of the
+ /* The Sanyo 3 CD changer uses byte 7 of the
GPCMD_TEST_UNIT_READY to command to switch CDs instead of
using the GPCMD_LOAD_UNLOAD opcode. */
if (cdi->sanyo_slot && -1 < slot) {
@@ -1425,7 +1454,8 @@ static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
if (!info)
return -ENOMEM;
- if ((ret = cdrom_read_mech_status(cdi, info))) {
+ ret = cdrom_read_mech_status(cdi, info);
+ if (ret) {
kfree(info);
return ret;
}
@@ -1433,17 +1463,12 @@ static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
curslot = info->hdr.curslot;
kfree(info);
- if (cdi->use_count > 1 || cdi->keeplocked) {
- if (slot == CDSL_CURRENT) {
- return curslot;
- } else {
- return -EBUSY;
- }
- }
+ if (cdi->use_count > 1 || cdi->keeplocked)
+ return (slot == CDSL_CURRENT) ? curslot : -EBUSY;
/* Specifying CDSL_CURRENT will attempt to load the currnet slot,
which is useful if it had been previously unloaded.
- Whether it can or not, it returns the current slot.
+ Whether it can or not, it returns the current slot.
Similarly, if slot happens to be the current one, we still
try and load it. */
if (slot == CDSL_CURRENT)
@@ -1451,7 +1476,9 @@ static int cdrom_select_disc(struct cdrom_device_info *cdi, int slot)
/* set media changed bits on both queues */
cdi->mc_flags = 0x3;
- if ((ret = cdrom_load_unload(cdi, slot)))
+
+ ret = cdrom_load_unload(cdi, slot);
+ if (ret)
return ret;
return slot;
@@ -1491,14 +1518,12 @@ unsigned int cdrom_check_events(struct cdrom_device_info *cdi,
cdi->vfs_events = 0;
return events;
}
-EXPORT_SYMBOL(cdrom_check_events);
/* We want to make media_changed accessible to the user through an
* ioctl. The main problem now is that we must double-buffer the
* low-level implementation, to assure that the VFS and the user both
* see a medium change once.
*/
-
static
int media_changed(struct cdrom_device_info *cdi, int queue)
{
@@ -1527,18 +1552,20 @@ int media_changed(struct cdrom_device_info *cdi, int queue)
cdi->mc_flags &= ~mask; /* clear bit */
return ret;
}
+EXPORT_SYMBOL(cdrom_check_events);
int cdrom_media_changed(struct cdrom_device_info *cdi)
{
- /* This talks to the VFS, which doesn't like errors - just 1 or 0.
- * Returning "0" is always safe (media hasn't been changed). Do that
- * if the low-level cdrom driver dosn't support media changed. */
+ /* This talks to the VFS, which doesn't like errors - just 1 or 0.
+ * Returning "0" is always safe (media hasn't been changed). Do that
+ * if the low-level cdrom driver dosn't support media changed. */
if (cdi == NULL || cdi->ops->media_changed == NULL)
return 0;
if (!CDROM_CAN(CDC_MEDIA_CHANGED))
return 0;
return media_changed(cdi, 0);
}
+EXPORT_SYMBOL(cdrom_media_changed);
/* Requests to the low-level drivers will /always/ be done in the
following format convention:
@@ -1558,7 +1585,8 @@ int cdrom_media_changed(struct cdrom_device_info *cdi)
static
void sanitize_format(union cdrom_addr *addr,
- u_char * curr, u_char requested)
+ u_char *curr,
+ u_char requested)
{
if (*curr == requested)
return; /* nothing to be done! */
@@ -1567,6 +1595,7 @@ void sanitize_format(union cdrom_addr *addr,
75 * (addr->msf.second - 2 + 60 * addr->msf.minute);
} else { /* CDROM_MSF */
int lba = addr->lba;
+
addr->msf.frame = lba % 75;
lba /= 75;
lba += 2;
@@ -1587,13 +1616,16 @@ void init_cdrom_command(struct packet_command *cgc, void *buf, int len,
cgc->data_direction = type;
cgc->timeout = CDROM_DEF_TIMEOUT;
}
+EXPORT_SYMBOL(init_cdrom_command);
/* DVD handling */
-#define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key))
-#define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge))
+#define copy_key(dest, src) memcpy((dest), (src), sizeof(dvd_key))
+#define copy_chal(dest, src) memcpy((dest), (src), sizeof(dvd_challenge))
-static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned type)
+static void setup_report_key(struct packet_command *cgc,
+ unsigned agid,
+ unsigned type)
{
cgc->cmd[0] = GPCMD_REPORT_KEY;
cgc->cmd[10] = type | (agid << 6);
@@ -1615,7 +1647,9 @@ static void setup_report_key(struct packet_command *cgc, unsigned agid, unsigned
cgc->data_direction = CGC_DATA_READ;
}
-static void setup_send_key(struct packet_command *cgc, unsigned agid, unsigned type)
+static void setup_send_key(struct packet_command *cgc,
+ unsigned agid,
+ unsigned type)
{
cgc->cmd[0] = GPCMD_SEND_KEY;
cgc->cmd[10] = type | (agid << 6);
@@ -1655,7 +1689,8 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
cgc.quiet = 1;
setup_report_key(&cgc, ai->lsa.agid, 0);
- if ((ret = cdo->generic_packet(cdi, &cgc)))
+ ret = cdo->generic_packet(cdi, &cgc);
+ if (ret)
return ret;
ai->lsa.agid = buf[7] >> 6;
@@ -1666,7 +1701,8 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
cd_dbg(CD_DVD, "entering DVD_LU_SEND_KEY1\n");
setup_report_key(&cgc, ai->lsk.agid, 2);
- if ((ret = cdo->generic_packet(cdi, &cgc)))
+ ret = cdo->generic_packet(cdi, &cgc);
+ if (ret)
return ret;
copy_key(ai->lsk.key, &buf[4]);
@@ -1677,7 +1713,8 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
cd_dbg(CD_DVD, "entering DVD_LU_SEND_CHALLENGE\n");
setup_report_key(&cgc, ai->lsc.agid, 1);
- if ((ret = cdo->generic_packet(cdi, &cgc)))
+ ret = cdo->generic_packet(cdi, &cgc);
+ if (ret)
return ret;
copy_chal(ai->lsc.chal, &buf[4]);
@@ -1694,7 +1731,8 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
cgc.cmd[3] = ai->lstk.lba >> 16;
cgc.cmd[2] = ai->lstk.lba >> 24;
- if ((ret = cdo->generic_packet(cdi, &cgc)))
+ ret = cdo->generic_packet(cdi, &cgc);
+ if (ret)
return ret;
ai->lstk.cpm = (buf[4] >> 7) & 1;
@@ -1707,8 +1745,9 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
case DVD_LU_SEND_ASF:
cd_dbg(CD_DVD, "entering DVD_LU_SEND_ASF\n");
setup_report_key(&cgc, ai->lsasf.agid, 5);
-
- if ((ret = cdo->generic_packet(cdi, &cgc)))
+
+ ret = cdo->generic_packet(cdi, &cgc);
+ if (ret)
return ret;
ai->lsasf.asf = buf[7] & 1;
@@ -1721,7 +1760,8 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
buf[1] = 0xe;
copy_chal(&buf[4], ai->hsc.chal);
- if ((ret = cdo->generic_packet(cdi, &cgc)))
+ ret = cdo->generic_packet(cdi, &cgc);
+ if (ret)
return ret;
ai->type = DVD_LU_SEND_KEY1;
@@ -1733,7 +1773,8 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
buf[1] = 0xa;
copy_key(&buf[4], ai->hsk.key);
- if ((ret = cdo->generic_packet(cdi, &cgc))) {
+ ret = cdo->generic_packet(cdi, &cgc);
+ if (ret) {
ai->type = DVD_AUTH_FAILURE;
return ret;
}
@@ -1745,7 +1786,9 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
cgc.quiet = 1;
cd_dbg(CD_DVD, "entering DVD_INVALIDATE_AGID\n");
setup_report_key(&cgc, ai->lsa.agid, 0x3f);
- if ((ret = cdo->generic_packet(cdi, &cgc)))
+
+ ret = cdo->generic_packet(cdi, &cgc);
+ if (ret)
return ret;
break;
@@ -1756,7 +1799,8 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
memset(&rpc_state, 0, sizeof(rpc_state_t));
cgc.buffer = (char *) &rpc_state;
- if ((ret = cdo->generic_packet(cdi, &cgc)))
+ ret = cdo->generic_packet(cdi, &cgc);
+ if (ret)
return ret;
ai->lrpcs.type = rpc_state.type_code;
@@ -1773,7 +1817,8 @@ static int dvd_do_auth(struct cdrom_device_info *cdi, dvd_authinfo *ai)
buf[1] = 6;
buf[4] = ai->hrpcs.pdrc;
- if ((ret = cdo->generic_packet(cdi, &cgc)))
+ ret = cdo->generic_packet(cdi, &cgc);
+ if (ret)
return ret;
break;
@@ -1816,7 +1861,7 @@ static int dvd_read_physical(struct cdrom_device_info *cdi, dvd_struct *s,
/*
* place the data... really ugly, but at least we won't have to
- * worry about endianess in userspace.
+ * worry about endianness in userspace.
*/
memset(layer, 0, sizeof(*layer));
layer->book_version = base[0] & 0xf;
@@ -1982,7 +2027,7 @@ static int dvd_read_struct(struct cdrom_device_info *cdi, dvd_struct *s,
case DVD_STRUCT_MANUFACT:
return dvd_read_manufact(cdi, s, cgc);
-
+
default:
cd_dbg(CD_WARNING, ": Invalid DVD structure read requested (%d)\n",
s->type);
@@ -2005,6 +2050,7 @@ int cdrom_mode_sense(struct cdrom_device_info *cdi,
cgc->data_direction = CGC_DATA_READ;
return cdo->generic_packet(cdi, cgc);
}
+EXPORT_SYMBOL(cdrom_mode_sense);
int cdrom_mode_select(struct cdrom_device_info *cdi,
struct packet_command *cgc)
@@ -2020,6 +2066,7 @@ int cdrom_mode_select(struct cdrom_device_info *cdi,
cgc->data_direction = CGC_DATA_WRITE;
return cdo->generic_packet(cdi, cgc);
}
+EXPORT_SYMBOL(cdrom_mode_select);
static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
struct cdrom_subchnl *subchnl, int mcn)
@@ -2036,7 +2083,8 @@ static int cdrom_read_subchannel(struct cdrom_device_info *cdi,
cgc.cmd[3] = mcn ? 2 : 1;
cgc.cmd[8] = 16;
- if ((ret = cdo->generic_packet(cdi, &cgc)))
+ ret = cdo->generic_packet(cdi, &cgc);
+ if (ret)
return ret;
subchnl->cdsc_audiostatus = cgc.buffer[1];
@@ -2098,15 +2146,22 @@ static int cdrom_read_block(struct cdrom_device_info *cdi,
cgc->cmd[7] = (nblocks >> 8) & 0xff;
cgc->cmd[8] = nblocks & 0xff;
cgc->buflen = blksize * nblocks;
-
+
/* set the header info returned */
switch (blksize) {
- case CD_FRAMESIZE_RAW0 : cgc->cmd[9] = 0x58; break;
- case CD_FRAMESIZE_RAW1 : cgc->cmd[9] = 0x78; break;
- case CD_FRAMESIZE_RAW : cgc->cmd[9] = 0xf8; break;
- default : cgc->cmd[9] = 0x10;
+ case CD_FRAMESIZE_RAW0:
+ cgc->cmd[9] = 0x58;
+ break;
+ case CD_FRAMESIZE_RAW1:
+ cgc->cmd[9] = 0x78;
+ break;
+ case CD_FRAMESIZE_RAW:
+ cgc->cmd[9] = 0xf8;
+ break;
+ default:
+ cgc->cmd[9] = 0x10;
}
-
+
return cdo->generic_packet(cdi, cgc);
}
@@ -2209,6 +2264,7 @@ static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
if (blk_execute_rq(q, cdi->disk, rq, 0)) {
struct request_sense *s = rq->sense;
+
ret = -EIO;
cdi->last_sense = s->sense_key;
}
@@ -2264,7 +2320,7 @@ retry:
pr_info("dropping to old style cdda (sense=%x)\n", cdi->last_sense);
cdi->cdda_method = CDDA_OLD;
- return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
+ return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
}
static int cdrom_ioctl_multisession(struct cdrom_device_info *cdi,
@@ -2310,6 +2366,7 @@ static int cdrom_ioctl_eject(struct cdrom_device_info *cdi)
return -EBUSY;
if (CDROM_CAN(CDC_LOCK)) {
int ret = cdi->ops->lock_door(cdi, 0);
+
if (ret)
return ret;
}
@@ -2866,12 +2923,16 @@ int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written)
use_toc:
toc.cdte_format = CDROM_MSF;
toc.cdte_track = CDROM_LEADOUT;
- if ((ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc)))
+
+ ret = cdi->ops->audio_ioctl(cdi, CDROMREADTOCENTRY, &toc);
+ if (ret)
return ret;
+
sanitize_format(&toc.cdte_addr, &toc.cdte_format, CDROM_LBA);
*last_written = toc.cdte_addr.lba;
return 0;
}
+EXPORT_SYMBOL(cdrom_get_last_written);
/* return the next writable block. also for udf file system. */
static int cdrom_get_next_writable(struct cdrom_device_info *cdi,
@@ -2918,10 +2979,10 @@ use_last_written:
if (ret) {
*next_writable = 0;
return ret;
- } else {
- *next_writable += 7;
- return 0;
}
+
+ *next_writable += 7;
+ return 0;
}
static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi,
@@ -3015,6 +3076,7 @@ static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi,
int ret;
struct cdrom_subchnl q;
u_char requested, back;
+
if (copy_from_user(&q, (struct cdrom_subchnl __user *)arg, sizeof(q)))
return -EFAULT;
requested = q.cdsc_format;
@@ -3040,6 +3102,7 @@ static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi,
{
struct cdrom_device_ops *cdo = cdi->ops;
struct cdrom_msf msf;
+
cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
if (copy_from_user(&msf, (struct cdrom_msf __user *)arg, sizeof(msf)))
return -EFAULT;
@@ -3060,6 +3123,7 @@ static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi,
{
struct cdrom_device_ops *cdo = cdi->ops;
struct cdrom_blk blk;
+
cd_dbg(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
if (copy_from_user(&blk, (struct cdrom_blk __user *)arg, sizeof(blk)))
return -EFAULT;
@@ -3096,10 +3160,10 @@ static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi,
ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0);
if (ret)
return ret;
-
+
/* originally the code depended on buffer[1] to determine
how much data is available for transfer. buffer[1] is
- unfortunately ambigious and the only reliable way seem
+ unfortunately ambiguous and the only reliable way seem
to be to simply skip over the block descriptor... */
offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6));
@@ -3131,7 +3195,7 @@ static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi,
return -EFAULT;
return 0;
}
-
+
/* get the volume mask */
cgc->buffer = mask;
ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1);
@@ -3154,11 +3218,13 @@ static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi,
int cmd)
{
struct cdrom_device_ops *cdo = cdi->ops;
+
cd_dbg(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
cgc->cmd[0] = GPCMD_START_STOP_UNIT;
cgc->cmd[1] = 1;
cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
cgc->data_direction = CGC_DATA_NONE;
+
return cdo->generic_packet(cdi, cgc);
}
@@ -3167,10 +3233,12 @@ static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi,
int cmd)
{
struct cdrom_device_ops *cdo = cdi->ops;
+
cd_dbg(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
cgc->cmd[0] = GPCMD_PAUSE_RESUME;
cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
cgc->data_direction = CGC_DATA_NONE;
+
return cdo->generic_packet(cdi, cgc);
}
@@ -3211,6 +3279,7 @@ static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi,
{
int ret;
dvd_authinfo ai;
+
if (!CDROM_CAN(CDC_DVD))
return -ENOSYS;
cd_dbg(CD_DO_IOCTL, "entering DVD_AUTH\n");
@@ -3221,6 +3290,7 @@ static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi,
return ret;
if (copy_to_user((dvd_authinfo __user *)arg, &ai, sizeof(ai)))
return -EFAULT;
+
return 0;
}
@@ -3229,12 +3299,14 @@ static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi,
{
int ret;
long next = 0;
+
cd_dbg(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
ret = cdrom_get_next_writable(cdi, &next);
if (ret)
return ret;
if (copy_to_user((long __user *)arg, &next, sizeof(next)))
return -EFAULT;
+
return 0;
}
@@ -3243,12 +3315,14 @@ static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi,
{
int ret;
long last = 0;
+
cd_dbg(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
ret = cdrom_get_last_written(cdi, &last);
if (ret)
return ret;
if (copy_to_user((long __user *)arg, &last, sizeof(last)))
return -EFAULT;
+
return 0;
}
@@ -3393,19 +3467,7 @@ int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev,
return -ENOSYS;
}
-
-EXPORT_SYMBOL(cdrom_get_last_written);
-EXPORT_SYMBOL(register_cdrom);
-EXPORT_SYMBOL(unregister_cdrom);
-EXPORT_SYMBOL(cdrom_open);
-EXPORT_SYMBOL(cdrom_release);
EXPORT_SYMBOL(cdrom_ioctl);
-EXPORT_SYMBOL(cdrom_media_changed);
-EXPORT_SYMBOL(cdrom_number_of_slots);
-EXPORT_SYMBOL(cdrom_mode_select);
-EXPORT_SYMBOL(cdrom_mode_sense);
-EXPORT_SYMBOL(init_cdrom_command);
-EXPORT_SYMBOL(cdrom_get_media_event);
#ifdef CONFIG_SYSCTL
@@ -3470,13 +3532,16 @@ static int cdrom_print_info(const char *header, int val, char *info,
return 0;
}
-static int cdrom_sysctl_info(struct ctl_table *ctl, int write,
- void __user *buffer, size_t *lenp, loff_t *ppos)
+static int cdrom_sysctl_info(struct ctl_table *ctl,
+ int write,
+ void __user *buffer,
+ size_t *lenp,
+ loff_t *ppos)
{
int pos;
char *info = cdrom_sysctl_settings.info;
const int max_size = sizeof(cdrom_sysctl_settings.info);
-
+
if (!*lenp || (*ppos && !write)) {
*lenp = 0;
return 0;
@@ -3485,7 +3550,7 @@ static int cdrom_sysctl_info(struct ctl_table *ctl, int write,
mutex_lock(&cdrom_mutex);
pos = sprintf(info, "CD-ROM information, " VERSION "\n");
-
+
if (cdrom_print_info("\ndrive name:\t", 0, info, &pos, CTL_NAME))
goto done;
if (cdrom_print_info("\ndrive speed:\t", 0, info, &pos, CTL_SPEED))
@@ -3587,11 +3652,11 @@ static int cdrom_sysctl_handler(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
int ret;
-
+
ret = proc_dointvec(ctl, write, buffer, lenp, ppos);
if (write) {
-
+
/* we only care for 1 or 0. */
autoclose = !!cdrom_sysctl_settings.autoclose;
autoeject = !!cdrom_sysctl_settings.autoeject;
@@ -3605,14 +3670,14 @@ static int cdrom_sysctl_handler(struct ctl_table *ctl, int write,
cdrom_update_settings();
}
- return ret;
+ return ret;
}
/* Place files in /proc/sys/dev/cdrom */
static struct ctl_table cdrom_table[] = {
{
.procname = "info",
- .data = &cdrom_sysctl_settings.info,
+ .data = &cdrom_sysctl_settings.info,
.maxlen = CDROM_STR_SIZE,
.mode = 0444,
.proc_handler = cdrom_sysctl_info,
--
1.7.10.4
--
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