| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <200902052129.40866.bzolnier@gmail.com>
Date: Thu, 5 Feb 2009 21:29:40 +0100
From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To: linux-ide@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH] ide: move request type specific code from ide_end_drive_cmd() to callers (v2)
From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
Subject: [PATCH] ide: move request type specific code from ide_end_drive_cmd() to callers (v2)
* Move request type specific code from ide_end_drive_cmd() to callers.
* Remove stale ide_end_drive_cmd() documentation and drop no longer
used 'stat' argument. Then rename the function to ide_complete_rq().
v2:
* Fix handling of blk_pm_request() requests in task_no_data_intr().
There should be no functional changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
---
replacement patch for the one posted before -- it fixes the bug catched
during pre-merge re-audit phase
[ no point in resending whole patchset as its fixed version is in
pata-2.6 tree now ]
drivers/ide/ide-eh.c | 11 ++++++++++-
drivers/ide/ide-floppy.c | 2 +-
drivers/ide/ide-io.c | 36 ++++++------------------------------
drivers/ide/ide-tape.c | 2 +-
drivers/ide/ide-taskfile.c | 26 +++++++++++++++++++-------
include/linux/ide.h | 3 ++-
6 files changed, 39 insertions(+), 41 deletions(-)
Index: b/drivers/ide/ide-eh.c
===================================================================
--- a/drivers/ide/ide-eh.c
+++ b/drivers/ide/ide-eh.c
@@ -124,7 +124,16 @@ ide_startstop_t ide_error(ide_drive_t *d
/* retry only "normal" I/O: */
if (!blk_fs_request(rq)) {
rq->errors = 1;
- ide_end_drive_cmd(drive, stat, err);
+ if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
+ ide_task_t *task = rq->special;
+
+ if (task)
+ ide_complete_task(drive, task, stat, err);
+ } else if (blk_pm_request(rq)) {
+ ide_complete_pm_rq(drive, rq);
+ return ide_stopped;
+ }
+ ide_complete_rq(drive, err);
return ide_stopped;
}
Index: b/drivers/ide/ide-floppy.c
===================================================================
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -101,7 +101,7 @@ static int ide_floppy_end_request(ide_dr
}
rq->errors = error;
/* fixme: need to move this local also */
- ide_end_drive_cmd(drive, 0, 0);
+ ide_complete_rq(drive, 0);
return 0;
}
Index: b/drivers/ide/ide-io.c
===================================================================
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -144,8 +144,7 @@ int ide_end_dequeued_request(ide_drive_t
}
EXPORT_SYMBOL_GPL(ide_end_dequeued_request);
-static void ide_complete_task(ide_drive_t *drive, ide_task_t *task,
- u8 stat, u8 err)
+void ide_complete_task(ide_drive_t *drive, ide_task_t *task, u8 stat, u8 err)
{
struct ide_taskfile *tf = &task->tf;
@@ -158,35 +157,11 @@ static void ide_complete_task(ide_drive_
kfree(task);
}
-/**
- * ide_end_drive_cmd - end an explicit drive command
- * @drive: command
- * @stat: status bits
- * @err: error bits
- *
- * Clean up after success/failure of an explicit drive command.
- * These get thrown onto the queue so they are synchronized with
- * real I/O operations on the drive.
- *
- * In LBA48 mode we have to read the register set twice to get
- * all the extra information out.
- */
-
-void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err)
+void ide_complete_rq(ide_drive_t *drive, u8 err)
{
ide_hwif_t *hwif = drive->hwif;
struct request *rq = hwif->rq;
- if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
- ide_task_t *task = (ide_task_t *)rq->special;
-
- if (task)
- ide_complete_task(drive, task, stat, err);
- } else if (blk_pm_request(rq)) {
- ide_complete_pm_rq(drive, rq);
- return;
- }
-
hwif->rq = NULL;
rq->errors = err;
@@ -195,7 +170,7 @@ void ide_end_drive_cmd (ide_drive_t *dri
blk_rq_bytes(rq))))
BUG();
}
-EXPORT_SYMBOL(ide_end_drive_cmd);
+EXPORT_SYMBOL(ide_complete_rq);
void ide_kill_rq(ide_drive_t *drive, struct request *rq)
{
@@ -358,8 +333,9 @@ static ide_startstop_t execute_drive_cmd
#ifdef DEBUG
printk("%s: DRIVE_CMD (null)\n", drive->name);
#endif
- ide_end_drive_cmd(drive, hwif->tp_ops->read_status(hwif),
- ide_read_error(drive));
+ (void)hwif->tp_ops->read_status(hwif);
+
+ ide_complete_rq(drive, ide_read_error(drive));
return ide_stopped;
}
Index: b/drivers/ide/ide-tape.c
===================================================================
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -502,7 +502,7 @@ static int idetape_end_request(ide_drive
spin_lock_irqsave(&tape->lock, flags);
- ide_end_drive_cmd(drive, 0, 0);
+ ide_complete_rq(drive, 0);
spin_unlock_irqrestore(&tape->lock, flags);
return 0;
Index: b/drivers/ide/ide-taskfile.c
===================================================================
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -147,12 +147,9 @@ static ide_startstop_t task_no_data_intr
}
}
return ide_error(drive, "task_no_data_intr", stat);
- /* calls ide_end_drive_cmd */
}
- if (!custom)
- ide_end_drive_cmd(drive, stat, ide_read_error(drive));
- else if (tf->command == ATA_CMD_IDLEIMMEDIATE) {
+ if (custom && tf->command == ATA_CMD_IDLEIMMEDIATE) {
hwif->tp_ops->tf_read(drive, task);
if (tf->lbal != 0xc4) {
printk(KERN_ERR "%s: head unload failed!\n",
@@ -160,10 +157,22 @@ static ide_startstop_t task_no_data_intr
ide_tf_dump(drive->name, tf);
} else
drive->dev_flags |= IDE_DFLAG_PARKED;
- ide_end_drive_cmd(drive, stat, ide_read_error(drive));
- } else if (tf->command == ATA_CMD_SET_MULTI)
+ } else if (custom && tf->command == ATA_CMD_SET_MULTI)
drive->mult_count = drive->mult_req;
+ if (custom == 0 || tf->command == ATA_CMD_IDLEIMMEDIATE) {
+ struct request *rq = hwif->rq;
+ u8 err = ide_read_error(drive);
+
+ if (blk_pm_request(rq))
+ ide_complete_pm_rq(drive, rq);
+ else {
+ if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE)
+ ide_complete_task(drive, task, stat, err);
+ ide_complete_rq(drive, err);
+ }
+ }
+
return ide_stopped;
}
@@ -321,9 +330,12 @@ static ide_startstop_t task_error(ide_dr
void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat)
{
if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
+ ide_task_t *task = rq->special;
u8 err = ide_read_error(drive);
- ide_end_drive_cmd(drive, stat, err);
+ if (task)
+ ide_complete_task(drive, task, stat, err);
+ ide_complete_rq(drive, err);
return;
}
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1155,7 +1155,8 @@ extern ide_startstop_t ide_do_reset (ide
extern int ide_devset_execute(ide_drive_t *drive,
const struct ide_devset *setting, int arg);
-extern void ide_end_drive_cmd(ide_drive_t *, u8, u8);
+void ide_complete_task(ide_drive_t *, ide_task_t *, u8, u8);
+void ide_complete_rq(ide_drive_t *, u8);
void ide_tf_dump(const char *, struct ide_taskfile *);
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists