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Date: Thu, 23 Apr 2015 17:59:01 -0600
From: Jason Eastman <eastman.jason.linux@...il.com>
To: gregkh@...uxfoundation.org
Cc: hofrat@...dl.org, linux-usb@...r.kernel.org,
linux-kernel@...r.kernel.org,
Jason Eastman <eastman.jason.linux@...il.com>
Subject: [PATCH] usb: image: mdc800: fixed various style issues
Fixed several style issues with: comments, function perenthesis,
indentation, and conditional braces
Signed-off-by: Jason Eastman <eastman.jason.linux@...il.com>
---
drivers/usb/image/mdc800.c | 769 +++++++++++++++++++-------------------------
1 file changed, 336 insertions(+), 433 deletions(-)
diff --git a/drivers/usb/image/mdc800.c b/drivers/usb/image/mdc800.c
index 5cf2633..c9b9ec0 100644
--- a/drivers/usb/image/mdc800.c
+++ b/drivers/usb/image/mdc800.c
@@ -29,19 +29,19 @@
* mknod /dev/mustek c 180 32
*
* The driver supports only one camera.
- *
+ *
* Fix: mdc800 used sleep_on and slept with io_lock held.
* Converted sleep_on to waitqueues with schedule_timeout and made io_lock
* a semaphore from a spinlock.
* by Oliver Neukum <oliver@...kum.name>
* (02/12/2001)
- *
+ *
* Identify version on module load.
* (08/04/2001) gb
*
* version 0.7.5
* Fixed potential SMP races with Spinlocks.
- * Thanks to Oliver Neukum <oliver@...kum.name> who
+ * Thanks to Oliver Neukum <oliver@...kum.name> who
* noticed the race conditions.
* (30/10/2000)
*
@@ -108,7 +108,7 @@
#define DRIVER_DESC "USB Driver for Mustek MDC800 Digital Camera"
/* Vendor and Product Information */
-#define MDC800_VENDOR_ID 0x055f
+#define MDC800_VENDOR_ID 0x055f
#define MDC800_PRODUCT_ID 0xa800
/* Timeouts (msec) */
@@ -116,7 +116,7 @@
#define TO_DOWNLOAD_GET_BUSY 1500
#define TO_WRITE_GET_READY 1000
#define TO_DEFAULT_COMMAND 5000
-#define TO_READ_FROM_IRQ TO_DEFAULT_COMMAND
+#define TO_READ_FROM_IRQ TO_DEFAULT_COMMAND
#define TO_GET_READY TO_DEFAULT_COMMAND
/* Minor Number of the device (create with mknod /dev/mustek c 180 32) */
@@ -134,124 +134,119 @@ typedef enum {
/* Data for the driver */
-struct mdc800_data
-{
- struct usb_device * dev; // Device Data
- mdc800_state state;
+struct mdc800_data {
+ struct usb_device *dev; /* Device Data */
+ mdc800_state state;
unsigned int endpoint [4];
- struct urb * irq_urb;
+ struct urb *irq_urb;
wait_queue_head_t irq_wait;
int irq_woken;
- char* irq_urb_buffer;
+ char *irq_urb_buffer;
- int camera_busy; // is camera busy ?
- int camera_request_ready; // Status to synchronize with irq
- char camera_response [8]; // last Bytes send after busy
+ int camera_busy; /* is camera busy ? */
+ int camera_request_ready; /* Status to synchronize with irq */
+ char camera_response[8]; /* last Bytes send after busy */
- struct urb * write_urb;
- char* write_urb_buffer;
+ struct urb *write_urb;
+ char *write_urb_buffer;
wait_queue_head_t write_wait;
int written;
- struct urb * download_urb;
- char* download_urb_buffer;
+ struct urb *download_urb;
+ char *download_urb_buffer;
wait_queue_head_t download_wait;
int downloaded;
- int download_left; // Bytes left to download ?
+ int download_left; /* Bytes left to download ? */
/* Device Data */
- char out [64]; // Answer Buffer
- int out_ptr; // Index to the first not readen byte
- int out_count; // Bytes in the buffer
+ char out[64]; /* Answer Buffer */
+ int out_ptr; /* Index to the first not readen byte */
+ int out_count; /* Bytes in the buffer */
- int open; // Camera device open ?
- struct mutex io_lock; // IO -lock
+ int open; /* Camera device open ? */
+ struct mutex io_lock; /* IO -lock */
- char in [8]; // Command Input Buffer
- int in_count;
+ char in[8]; /* Command Input Buffer */
+ int in_count;
- int pic_index; // Cache for the Imagesize (-1 for nothing cached )
+ int pic_index; /* Cache for the Imagesize (-1 for nothing cached ) */
int pic_len;
int minor;
};
/* Specification of the Endpoints */
-static struct usb_endpoint_descriptor mdc800_ed [4] =
-{
- {
- .bLength = 0,
+static struct usb_endpoint_descriptor mdc800_ed[4] = {
+ {
+ .bLength = 0,
.bDescriptorType = 0,
.bEndpointAddress = 0x01,
- .bmAttributes = 0x02,
+ .bmAttributes = 0x02,
.wMaxPacketSize = cpu_to_le16(8),
- .bInterval = 0,
- .bRefresh = 0,
- .bSynchAddress = 0,
+ .bInterval = 0,
+ .bRefresh = 0,
+ .bSynchAddress = 0,
},
{
- .bLength = 0,
- .bDescriptorType = 0,
- .bEndpointAddress = 0x82,
- .bmAttributes = 0x03,
- .wMaxPacketSize = cpu_to_le16(8),
- .bInterval = 0,
- .bRefresh = 0,
- .bSynchAddress = 0,
+ .bLength = 0,
+ .bDescriptorType = 0,
+ .bEndpointAddress = 0x82,
+ .bmAttributes = 0x03,
+ .wMaxPacketSize = cpu_to_le16(8),
+ .bInterval = 0,
+ .bRefresh = 0,
+ .bSynchAddress = 0,
},
{
- .bLength = 0,
- .bDescriptorType = 0,
- .bEndpointAddress = 0x03,
- .bmAttributes = 0x02,
- .wMaxPacketSize = cpu_to_le16(64),
- .bInterval = 0,
- .bRefresh = 0,
- .bSynchAddress = 0,
+ .bLength = 0,
+ .bDescriptorType = 0,
+ .bEndpointAddress = 0x03,
+ .bmAttributes = 0x02,
+ .wMaxPacketSize = cpu_to_le16(64),
+ .bInterval = 0,
+ .bRefresh = 0,
+ .bSynchAddress = 0,
},
{
- .bLength = 0,
- .bDescriptorType = 0,
- .bEndpointAddress = 0x84,
- .bmAttributes = 0x02,
- .wMaxPacketSize = cpu_to_le16(64),
- .bInterval = 0,
- .bRefresh = 0,
- .bSynchAddress = 0,
+ .bLength = 0,
+ .bDescriptorType = 0,
+ .bEndpointAddress = 0x84,
+ .bmAttributes = 0x02,
+ .wMaxPacketSize = cpu_to_le16(64),
+ .bInterval = 0,
+ .bRefresh = 0,
+ .bSynchAddress = 0,
},
};
/* The Variable used by the driver */
-static struct mdc800_data* mdc800;
+static struct mdc800_data *mdc800;
/***************************************************************************
The USB Part of the driver
****************************************************************************/
-static int mdc800_endpoint_equals (struct usb_endpoint_descriptor *a,struct usb_endpoint_descriptor *b)
+static int mdc800_endpoint_equals(struct usb_endpoint_descriptor *a, struct usb_endpoint_descriptor *b)
{
return (
- ( a->bEndpointAddress == b->bEndpointAddress )
- && ( a->bmAttributes == b->bmAttributes )
- && ( a->wMaxPacketSize == b->wMaxPacketSize )
+ (a->bEndpointAddress == b->bEndpointAddress)
+ && (a->bmAttributes == b->bmAttributes)
+ && (a->wMaxPacketSize == b->wMaxPacketSize)
);
}
-
-/*
- * Checks whether the camera responds busy
- */
-static int mdc800_isBusy (char* ch)
+/* Checks whether the camera responds busy */
+static int mdc800_isBusy(char *ch)
{
- int i=0;
- while (i<8)
- {
- if (ch [i] != (char)0x99)
+ int i = 0;
+
+ while (i < 8) {
+ if (ch[i] != (char)0x99)
return 0;
i++;
}
@@ -259,15 +254,13 @@ static int mdc800_isBusy (char* ch)
}
-/*
- * Checks whether the Camera is ready
- */
-static int mdc800_isReady (char *ch)
+/* Checks whether the Camera is ready */
+static int mdc800_isReady(char *ch)
{
- int i=0;
- while (i<8)
- {
- if (ch [i] != (char)0xbb)
+ int i = 0;
+
+ while (i < 8) {
+ if (ch[i] != (char)0xbb)
return 0;
i++;
}
@@ -276,44 +269,36 @@ static int mdc800_isReady (char *ch)
-/*
- * USB IRQ Handler for InputLine
- */
-static void mdc800_usb_irq (struct urb *urb)
+/* USB IRQ Handler for InputLine */
+static void mdc800_usb_irq(struct urb *urb)
{
- int data_received=0, wake_up;
- unsigned char* b=urb->transfer_buffer;
- struct mdc800_data* mdc800=urb->context;
+ int data_received = 0, wake_up;
+ unsigned char *b = urb->transfer_buffer;
+ struct mdc800_data *mdc800 = urb->context;
struct device *dev = &mdc800->dev->dev;
int status = urb->status;
if (status >= 0) {
- if (mdc800_isBusy (b))
- {
- if (!mdc800->camera_busy)
- {
- mdc800->camera_busy=1;
+ if (mdc800_isBusy(b)) {
+ if (!mdc800->camera_busy) {
+ mdc800->camera_busy = 1;
dev_dbg(dev, "gets busy\n");
}
- }
- else
- {
- if (mdc800->camera_busy && mdc800_isReady (b))
- {
- mdc800->camera_busy=0;
+ } else {
+ if (mdc800->camera_busy && mdc800_isReady(b)) {
+ mdc800->camera_busy = 0;
dev_dbg(dev, "gets ready\n");
}
}
- if (!(mdc800_isBusy (b) || mdc800_isReady (b)))
- {
+ if (!(mdc800_isBusy(b) || mdc800_isReady(b))) {
/* Store Data in camera_answer field */
- dev_dbg(dev, "%i %i %i %i %i %i %i %i \n",b[0],b[1],b[2],b[3],b[4],b[5],b[6],b[7]);
+ dev_dbg(dev, "%i %i %i %i %i %i %i %i\n", b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
- memcpy (mdc800->camera_response,b,8);
- data_received=1;
+ memcpy(mdc800->camera_response, b, 8);
+ data_received = 1;
}
}
- wake_up= ( mdc800->camera_request_ready > 0 )
+ wake_up = (mdc800->camera_request_ready > 0)
&&
(
((mdc800->camera_request_ready == 1) && (!mdc800->camera_busy))
@@ -325,93 +310,82 @@ static void mdc800_usb_irq (struct urb *urb)
(status < 0)
);
- if (wake_up)
- {
- mdc800->camera_request_ready=0;
- mdc800->irq_woken=1;
- wake_up (&mdc800->irq_wait);
+ if (wake_up) {
+ mdc800->camera_request_ready = 0;
+ mdc800->irq_woken = 1;
+ wake_up(&mdc800->irq_wait);
}
}
-/*
- * Waits a while until the irq responds that camera is ready
- *
- * mode : 0: Wait for camera gets ready
- * 1: Wait for receiving data
- * 2: Wait for camera gets busy
- *
- * msec: Time to wait
- */
-static int mdc800_usb_waitForIRQ (int mode, int msec)
+/* Waits a while until the irq responds that camera is ready
+
+ mode : 0: Wait for camera gets ready
+ 1: Wait for receiving data
+ 2: Wait for camera gets busy
+
+ msec: Time to wait */
+
+static int mdc800_usb_waitForIRQ(int mode, int msec)
{
- mdc800->camera_request_ready=1+mode;
+ mdc800->camera_request_ready = 1+mode;
wait_event_timeout(mdc800->irq_wait, mdc800->irq_woken,
msecs_to_jiffies(msec));
mdc800->irq_woken = 0;
- if (mdc800->camera_request_ready>0)
- {
- mdc800->camera_request_ready=0;
+ if (mdc800->camera_request_ready > 0) {
+ mdc800->camera_request_ready = 0;
dev_err(&mdc800->dev->dev, "timeout waiting for camera.\n");
return -1;
}
-
- if (mdc800->state == NOT_CONNECTED)
- {
- printk(KERN_WARNING "mdc800: Camera gets disconnected "
- "during waiting for irq.\n");
- mdc800->camera_request_ready=0;
+
+ if (mdc800->state == NOT_CONNECTED) {
+ printk(KERN_WARNING "mdc800: Camera gets disconnected during waiting for irq.\n");
+ mdc800->camera_request_ready = 0;
return -2;
}
-
+
return 0;
}
-/*
- * The write_urb callback function
- */
-static void mdc800_usb_write_notify (struct urb *urb)
+/* The write_urb callback function */
+static void mdc800_usb_write_notify(struct urb *urb)
{
- struct mdc800_data* mdc800=urb->context;
+ struct mdc800_data *mdc800 = urb->context;
int status = urb->status;
if (status != 0)
dev_err(&mdc800->dev->dev,
"writing command fails (status=%i)\n", status);
else
- mdc800->state=READY;
+ mdc800->state = READY;
mdc800->written = 1;
- wake_up (&mdc800->write_wait);
+ wake_up(&mdc800->write_wait);
}
-/*
- * The download_urb callback function
- */
-static void mdc800_usb_download_notify (struct urb *urb)
+/* The download_urb callback function */
+static void mdc800_usb_download_notify(struct urb *urb)
{
- struct mdc800_data* mdc800=urb->context;
+ struct mdc800_data *mdc800 = urb->context;
int status = urb->status;
if (status == 0) {
/* Fill output buffer with these data */
- memcpy (mdc800->out, urb->transfer_buffer, 64);
- mdc800->out_count=64;
- mdc800->out_ptr=0;
- mdc800->download_left-=64;
+ memcpy(mdc800->out, urb->transfer_buffer, 64);
+ mdc800->out_count = 64;
+ mdc800->out_ptr = 0;
+ mdc800->download_left -= 64;
if (mdc800->download_left == 0)
- {
- mdc800->state=READY;
- }
+ mdc800->state = READY;
} else {
dev_err(&mdc800->dev->dev,
"request bytes fails (status:%i)\n", status);
}
mdc800->downloaded = 1;
- wake_up (&mdc800->download_wait);
+ wake_up(&mdc800->download_wait);
}
@@ -428,29 +402,25 @@ static struct usb_class_driver mdc800_class = {
};
-/*
- * Callback to search the Mustek MDC800 on the USB Bus
- */
-static int mdc800_usb_probe (struct usb_interface *intf,
+/* Callback to search the Mustek MDC800 on the USB Bus */
+static int mdc800_usb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
- int i,j;
+ int i, j;
struct usb_host_interface *intf_desc;
- struct usb_device *dev = interface_to_usbdev (intf);
- int irq_interval=0;
+ struct usb_device *dev = interface_to_usbdev(intf);
+ int irq_interval = 0;
int retval;
dev_dbg(&intf->dev, "(%s) called.\n", __func__);
- if (mdc800->dev != NULL)
- {
+ if (mdc800->dev != NULL) {
dev_warn(&intf->dev, "only one Mustek MDC800 is supported.\n");
return -ENODEV;
}
- if (dev->descriptor.bNumConfigurations != 1)
- {
+ if (dev->descriptor.bNumConfigurations != 1) {
dev_err(&intf->dev,
"probe fails -> wrong Number of Configuration\n");
return -ENODEV;
@@ -458,33 +428,26 @@ static int mdc800_usb_probe (struct usb_interface *intf,
intf_desc = intf->cur_altsetting;
if (
- ( intf_desc->desc.bInterfaceClass != 0xff )
- || ( intf_desc->desc.bInterfaceSubClass != 0 )
- || ( intf_desc->desc.bInterfaceProtocol != 0 )
- || ( intf_desc->desc.bNumEndpoints != 4)
- )
- {
+ (intf_desc->desc.bInterfaceClass != 0xff)
+ || (intf_desc->desc.bInterfaceSubClass != 0)
+ || (intf_desc->desc.bInterfaceProtocol != 0)
+ || (intf_desc->desc.bNumEndpoints != 4)
+ ) {
dev_err(&intf->dev, "probe fails -> wrong Interface\n");
return -ENODEV;
}
/* Check the Endpoints */
- for (i=0; i<4; i++)
- {
- mdc800->endpoint[i]=-1;
- for (j=0; j<4; j++)
- {
- if (mdc800_endpoint_equals (&intf_desc->endpoint [j].desc,&mdc800_ed [i]))
- {
- mdc800->endpoint[i]=intf_desc->endpoint [j].desc.bEndpointAddress ;
- if (i==1)
- {
- irq_interval=intf_desc->endpoint [j].desc.bInterval;
- }
+ for (i = 0; i < 4; i++) {
+ mdc800->endpoint[i] = -1;
+ for (j = 0; j < 4; j++) {
+ if (mdc800_endpoint_equals(&intf_desc->endpoint[j].desc, &mdc800_ed[i])) {
+ mdc800->endpoint[i] = intf_desc->endpoint[j].desc.bEndpointAddress;
+ if (i == 1)
+ irq_interval = intf_desc->endpoint [j].desc.bInterval;
}
}
- if (mdc800->endpoint[i] == -1)
- {
+ if (mdc800->endpoint[i] == -1) {
dev_err(&intf->dev, "probe fails -> Wrong Endpoints.\n");
return -ENODEV;
}
@@ -502,14 +465,14 @@ static int mdc800_usb_probe (struct usb_interface *intf,
return -ENODEV;
}
- mdc800->dev=dev;
- mdc800->open=0;
+ mdc800->dev = dev;
+ mdc800->open = 0;
/* Setup URB Structs */
- usb_fill_int_urb (
+ usb_fill_int_urb(
mdc800->irq_urb,
mdc800->dev,
- usb_rcvintpipe (mdc800->dev,mdc800->endpoint [1]),
+ usb_rcvintpipe(mdc800->dev, mdc800->endpoint[1]),
mdc800->irq_urb_buffer,
8,
mdc800_usb_irq,
@@ -517,41 +480,39 @@ static int mdc800_usb_probe (struct usb_interface *intf,
irq_interval
);
- usb_fill_bulk_urb (
+ usb_fill_bulk_urb(
mdc800->write_urb,
mdc800->dev,
- usb_sndbulkpipe (mdc800->dev, mdc800->endpoint[0]),
+ usb_sndbulkpipe(mdc800->dev, mdc800->endpoint[0]),
mdc800->write_urb_buffer,
8,
mdc800_usb_write_notify,
mdc800
);
- usb_fill_bulk_urb (
+ usb_fill_bulk_urb(
mdc800->download_urb,
mdc800->dev,
- usb_rcvbulkpipe (mdc800->dev, mdc800->endpoint [3]),
+ usb_rcvbulkpipe(mdc800->dev, mdc800->endpoint[3]),
mdc800->download_urb_buffer,
64,
mdc800_usb_download_notify,
mdc800
);
- mdc800->state=READY;
+ mdc800->state = READY;
mutex_unlock(&mdc800->io_lock);
-
+
usb_set_intfdata(intf, mdc800);
return 0;
}
-/*
- * Disconnect USB device (maybe the MDC800)
- */
-static void mdc800_usb_disconnect (struct usb_interface *intf)
+/* Disconnect USB device (maybe the MDC800) */
+static void mdc800_usb_disconnect(struct usb_interface *intf)
{
- struct mdc800_data* mdc800 = usb_get_intfdata(intf);
+ struct mdc800_data *mdc800 = usb_get_intfdata(intf);
dev_dbg(&intf->dev, "(%s) called\n", __func__);
@@ -564,7 +525,7 @@ static void mdc800_usb_disconnect (struct usb_interface *intf)
/* must be under lock to make sure no URB
is submitted after usb_kill_urb() */
mutex_lock(&mdc800->io_lock);
- mdc800->state=NOT_CONNECTED;
+ mdc800->state = NOT_CONNECTED;
usb_kill_urb(mdc800->irq_urb);
usb_kill_urb(mdc800->write_urb);
@@ -582,71 +543,64 @@ static void mdc800_usb_disconnect (struct usb_interface *intf)
The Misc device Part (file_operations)
****************************************************************************/
-/*
- * This Function calc the Answersize for a command.
- */
-static int mdc800_getAnswerSize (char command)
+/* This Function calc the Answersize for a command. */
+static int mdc800_getAnswerSize(char command)
{
- switch ((unsigned char) command)
- {
- case 0x2a:
- case 0x49:
- case 0x51:
- case 0x0d:
- case 0x20:
- case 0x07:
- case 0x01:
- case 0x25:
- case 0x00:
- return 8;
-
- case 0x05:
- case 0x3e:
- return mdc800->pic_len;
-
- case 0x09:
- return 4096;
-
- default:
- return 0;
+ switch ((unsigned char) command) {
+ case 0x2a:
+ case 0x49:
+ case 0x51:
+ case 0x0d:
+ case 0x20:
+ case 0x07:
+ case 0x01:
+ case 0x25:
+ case 0x00:
+ return 8;
+
+ case 0x05:
+ case 0x3e:
+ return mdc800->pic_len;
+
+ case 0x09:
+ return 4096;
+
+ default:
+ return 0;
}
}
-/*
- * Init the device: (1) alloc mem (2) Increase MOD Count ..
- */
-static int mdc800_device_open (struct inode* inode, struct file *file)
+/* Init the device: (1) alloc mem (2) Increase MOD Count .. */
+static int mdc800_device_open(struct inode *inode, struct file *file)
{
- int retval=0;
- int errn=0;
+ int retval = 0;
+ int errn = 0;
mutex_lock(&mdc800->io_lock);
-
- if (mdc800->state == NOT_CONNECTED)
- {
- errn=-EBUSY;
+
+ if (mdc800->state == NOT_CONNECTED) {
+ errn = -EBUSY;
goto error_out;
}
- if (mdc800->open)
- {
- errn=-EBUSY;
+ if (mdc800->open) {
+ errn = -EBUSY;
goto error_out;
}
- mdc800->in_count=0;
- mdc800->out_count=0;
- mdc800->out_ptr=0;
- mdc800->pic_index=0;
- mdc800->pic_len=-1;
- mdc800->download_left=0;
+ mdc800->in_count = 0;
+ mdc800->out_count = 0;
+ mdc800->out_ptr = 0;
+ mdc800->pic_index = 0;
+ mdc800->pic_len = -1;
+ mdc800->download_left = 0;
- mdc800->camera_busy=0;
- mdc800->camera_request_ready=0;
+ mdc800->camera_busy = 0;
+ mdc800->camera_request_ready = 0;
- retval=0;
+ retval = 0;
mdc800->irq_urb->dev = mdc800->dev;
- retval = usb_submit_urb (mdc800->irq_urb, GFP_KERNEL);
+ retval = usb_submit_urb(mdc800->irq_urb, GFP_KERNEL);
if (retval) {
dev_err(&mdc800->dev->dev,
"request USB irq fails (submit_retval=%i).\n", retval);
@@ -654,7 +608,7 @@ static int mdc800_device_open (struct inode* inode, struct file *file)
goto error_out;
}
- mdc800->open=1;
+ mdc800->open = 1;
dev_dbg(&mdc800->dev->dev, "Mustek MDC800 device opened.\n");
error_out:
@@ -663,24 +617,19 @@ error_out:
}
-/*
- * Close the Camera and release Memory
- */
-static int mdc800_device_release (struct inode* inode, struct file *file)
+/* Close the Camera and release Memory */
+static int mdc800_device_release(struct inode *inode, struct file *file)
{
- int retval=0;
+ int retval = 0;
mutex_lock(&mdc800->io_lock);
- if (mdc800->open && (mdc800->state != NOT_CONNECTED))
- {
+ if (mdc800->open && (mdc800->state != NOT_CONNECTED)) {
usb_kill_urb(mdc800->irq_urb);
usb_kill_urb(mdc800->write_urb);
usb_kill_urb(mdc800->download_urb);
- mdc800->open=0;
- }
- else
- {
- retval=-EIO;
+ mdc800->open = 0;
+ } else {
+ retval = -EIO;
}
mutex_unlock(&mdc800->io_lock);
@@ -688,59 +637,48 @@ static int mdc800_device_release (struct inode* inode, struct file *file)
}
-/*
- * The Device read callback Function
- */
-static ssize_t mdc800_device_read (struct file *file, char __user *buf, size_t len, loff_t *pos)
+/* The Device read callback Function */
+static ssize_t mdc800_device_read(struct file *file, char __user *buf, size_t len, loff_t *pos)
{
- size_t left=len, sts=len; /* single transfer size */
+ size_t left = len, sts = len; /* single transfer size */
char __user *ptr = buf;
int retval;
mutex_lock(&mdc800->io_lock);
- if (mdc800->state == NOT_CONNECTED)
- {
+ if (mdc800->state == NOT_CONNECTED) {
mutex_unlock(&mdc800->io_lock);
return -EBUSY;
}
- if (mdc800->state == WORKING)
- {
- printk(KERN_WARNING "mdc800: Illegal State \"working\""
- "reached during read ?!\n");
+ if (mdc800->state == WORKING) {
+ printk(KERN_WARNING "mdc800: Illegal State \"working\" reached during read ?!\n");
mutex_unlock(&mdc800->io_lock);
return -EBUSY;
}
- if (!mdc800->open)
- {
+ if (!mdc800->open) {
mutex_unlock(&mdc800->io_lock);
return -EBUSY;
}
- while (left)
- {
- if (signal_pending (current))
- {
+ while (left) {
+ if (signal_pending(current)) {
mutex_unlock(&mdc800->io_lock);
return -EINTR;
}
- sts=left > (mdc800->out_count-mdc800->out_ptr)?mdc800->out_count-mdc800->out_ptr:left;
+ sts = left > (mdc800->out_count-mdc800->out_ptr)?mdc800->out_count-mdc800->out_ptr:left;
- if (sts <= 0)
- {
+ if (sts <= 0) {
/* Too less Data in buffer */
- if (mdc800->state == DOWNLOAD)
- {
- mdc800->out_count=0;
- mdc800->out_ptr=0;
+ if (mdc800->state == DOWNLOAD) {
+ mdc800->out_count = 0;
+ mdc800->out_ptr = 0;
/* Download -> Request new bytes */
mdc800->download_urb->dev = mdc800->dev;
- retval = usb_submit_urb (mdc800->download_urb, GFP_KERNEL);
+ retval = usb_submit_urb(mdc800->download_urb, GFP_KERNEL);
if (retval) {
dev_err(&mdc800->dev->dev,
- "Can't submit download urb "
- "(retval=%i)\n", retval);
+ "Can't submit download urb (retval=%i)\n", retval);
mutex_unlock(&mdc800->io_lock);
return len-left;
}
@@ -748,34 +686,28 @@ static ssize_t mdc800_device_read (struct file *file, char __user *buf, size_t l
mdc800->downloaded,
msecs_to_jiffies(TO_DOWNLOAD_GET_READY));
mdc800->downloaded = 0;
- if (mdc800->download_urb->status != 0)
- {
+ if (mdc800->download_urb->status != 0) {
dev_err(&mdc800->dev->dev,
- "request download-bytes fails "
- "(status=%i)\n",
+ "request download-bytes fails (status=%i)\n",
mdc800->download_urb->status);
mutex_unlock(&mdc800->io_lock);
return len-left;
}
- }
- else
- {
+ } else {
/* No more bytes -> that's an error*/
mutex_unlock(&mdc800->io_lock);
return -EIO;
}
- }
- else
- {
+ } else {
/* Copy Bytes */
- if (copy_to_user(ptr, &mdc800->out [mdc800->out_ptr],
+ if (copy_to_user(ptr, &mdc800->out[mdc800->out_ptr],
sts)) {
mutex_unlock(&mdc800->io_lock);
return -EFAULT;
}
- ptr+=sts;
- left-=sts;
- mdc800->out_ptr+=sts;
+ ptr += sts;
+ left -= sts;
+ mdc800->out_ptr += sts;
}
}
@@ -784,164 +716,141 @@ static ssize_t mdc800_device_read (struct file *file, char __user *buf, size_t l
}
-/*
- * The Device write callback Function
- * If a 8Byte Command is received, it will be send to the camera.
- * After this the driver initiates the request for the answer or
- * just waits until the camera becomes ready.
- */
-static ssize_t mdc800_device_write (struct file *file, const char __user *buf, size_t len, loff_t *pos)
+/* The Device write callback Function
+ If a 8Byte Command is received, it will be send to the camera.
+ After this the driver initiates the request for the answer or
+ just waits until the camera becomes ready. */
+static ssize_t mdc800_device_write(struct file *file, const char __user *buf, size_t len, loff_t *pos)
{
- size_t i=0;
+ size_t i = 0;
int retval;
mutex_lock(&mdc800->io_lock);
- if (mdc800->state != READY)
- {
+ if (mdc800->state != READY) {
mutex_unlock(&mdc800->io_lock);
return -EBUSY;
}
- if (!mdc800->open )
- {
+ if (!mdc800->open) {
mutex_unlock(&mdc800->io_lock);
return -EBUSY;
}
- while (i<len)
- {
+ while (i < len) {
unsigned char c;
- if (signal_pending (current))
- {
+
+ if (signal_pending(current)) {
mutex_unlock(&mdc800->io_lock);
return -EINTR;
}
-
- if(get_user(c, buf+i))
- {
+
+ if (get_user(c, buf+i)) {
mutex_unlock(&mdc800->io_lock);
return -EFAULT;
}
/* check for command start */
- if (c == 0x55)
- {
- mdc800->in_count=0;
- mdc800->out_count=0;
- mdc800->out_ptr=0;
- mdc800->download_left=0;
+ if (c == 0x55) {
+ mdc800->in_count = 0;
+ mdc800->out_count = 0;
+ mdc800->out_ptr = 0;
+ mdc800->download_left = 0;
}
/* save command byte */
- if (mdc800->in_count < 8)
- {
+ if (mdc800->in_count < 8) {
mdc800->in[mdc800->in_count] = c;
mdc800->in_count++;
- }
- else
- {
+ } else {
mutex_unlock(&mdc800->io_lock);
return -EIO;
}
/* Command Buffer full ? -> send it to camera */
- if (mdc800->in_count == 8)
- {
+ if (mdc800->in_count == 8) {
int answersize;
- if (mdc800_usb_waitForIRQ (0,TO_GET_READY))
- {
+ if (mdc800_usb_waitForIRQ(0, TO_GET_READY)) {
dev_err(&mdc800->dev->dev,
"Camera didn't get ready.\n");
mutex_unlock(&mdc800->io_lock);
return -EIO;
}
- answersize=mdc800_getAnswerSize (mdc800->in[1]);
+ answersize = mdc800_getAnswerSize(mdc800->in[1]);
- mdc800->state=WORKING;
- memcpy (mdc800->write_urb->transfer_buffer, mdc800->in,8);
+ mdc800->state = WORKING;
+ memcpy(mdc800->write_urb->transfer_buffer, mdc800->in, 8);
mdc800->write_urb->dev = mdc800->dev;
- retval = usb_submit_urb (mdc800->write_urb, GFP_KERNEL);
+ retval = usb_submit_urb(mdc800->write_urb, GFP_KERNEL);
if (retval) {
dev_err(&mdc800->dev->dev,
- "submitting write urb fails "
- "(retval=%i)\n", retval);
+ "submitting write urb fails (retval=%i)\n", retval);
mutex_unlock(&mdc800->io_lock);
return -EIO;
}
wait_event_timeout(mdc800->write_wait, mdc800->written,
msecs_to_jiffies(TO_WRITE_GET_READY));
mdc800->written = 0;
- if (mdc800->state == WORKING)
- {
+ if (mdc800->state == WORKING) {
usb_kill_urb(mdc800->write_urb);
mutex_unlock(&mdc800->io_lock);
return -EIO;
}
- switch ((unsigned char) mdc800->in[1])
- {
- case 0x05: /* Download Image */
- case 0x3e: /* Take shot in Fine Mode (WCam Mode) */
- if (mdc800->pic_len < 0)
- {
- dev_err(&mdc800->dev->dev,
- "call 0x07 before "
- "0x05,0x3e\n");
- mdc800->state=READY;
- mutex_unlock(&mdc800->io_lock);
- return -EIO;
- }
- mdc800->pic_len=-1;
-
- case 0x09: /* Download Thumbnail */
- mdc800->download_left=answersize+64;
- mdc800->state=DOWNLOAD;
- mdc800_usb_waitForIRQ (0,TO_DOWNLOAD_GET_BUSY);
- break;
+ switch ((unsigned char) mdc800->in[1]) {
+ case 0x05: /* Download Image */
+ case 0x3e: /* Take shot in Fine Mode (WCam Mode) */
+ if (mdc800->pic_len < 0) {
+ dev_err(&mdc800->dev->dev,
+ "call 0x07 before 0x05,0x3e\n");
+ mdc800->state = READY;
+ mutex_unlock(&mdc800->io_lock);
+ return -EIO;
+ }
+ mdc800->pic_len = -1;
+ case 0x09: /* Download Thumbnail */
+ mdc800->download_left = answersize+64;
+ mdc800->state = DOWNLOAD;
+ mdc800_usb_waitForIRQ(0, TO_DOWNLOAD_GET_BUSY);
+ break;
- default:
- if (answersize)
- {
- if (mdc800_usb_waitForIRQ (1,TO_READ_FROM_IRQ))
- {
- dev_err(&mdc800->dev->dev, "requesting answer from irq fails\n");
- mutex_unlock(&mdc800->io_lock);
- return -EIO;
- }
+ default:
+ if (answersize) {
- /* Write dummy data, (this is ugly but part of the USB Protocol */
- /* if you use endpoint 1 as bulk and not as irq) */
- memcpy (mdc800->out, mdc800->camera_response,8);
+ if (mdc800_usb_waitForIRQ(1, TO_READ_FROM_IRQ)) {
+ dev_err(&mdc800->dev->dev, "requesting answer from irq fails\n");
+ mutex_unlock(&mdc800->io_lock);
+ return -EIO;
+ }
- /* This is the interpreted answer */
- memcpy (&mdc800->out[8], mdc800->camera_response,8);
+ /* Write dummy data, (this is ugly but part of the USB Protocol */
+ /* if you use endpoint 1 as bulk and not as irq) */
+ memcpy(mdc800->out, mdc800->camera_response, 8);
- mdc800->out_ptr=0;
- mdc800->out_count=16;
+ /* This is the interpreted answer */
+ memcpy(&mdc800->out[8], mdc800->camera_response, 8);
- /* Cache the Imagesize, if command was getImageSize */
- if (mdc800->in [1] == (char) 0x07)
- {
- mdc800->pic_len=(int) 65536*(unsigned char) mdc800->camera_response[0]+256*(unsigned char) mdc800->camera_response[1]+(unsigned char) mdc800->camera_response[2];
+ mdc800->out_ptr = 0;
+ mdc800->out_count = 16;
- dev_dbg(&mdc800->dev->dev, "cached imagesize = %i\n", mdc800->pic_len);
- }
+ /* Cache the Imagesize, if command was getImageSize */
+ if (mdc800->in[1] == (char) 0x07) {
+ mdc800->pic_len = (int) 65536*(unsigned char) mdc800->camera_response[0]+256*(unsigned char) mdc800->camera_response[1]+(unsigned char) mdc800->camera_response[2];
+ dev_dbg(&mdc800->dev->dev, "cached imagesize = %i\n", mdc800->pic_len);
}
- else
- {
- if (mdc800_usb_waitForIRQ (0,TO_DEFAULT_COMMAND))
- {
- dev_err(&mdc800->dev->dev, "Command Timeout.\n");
- mutex_unlock(&mdc800->io_lock);
- return -EIO;
- }
+
+ } else {
+ if (mdc800_usb_waitForIRQ(0, TO_DEFAULT_COMMAND)) {
+ dev_err(&mdc800->dev->dev, "Command Timeout.\n");
+ mutex_unlock(&mdc800->io_lock);
+ return -EIO;
}
- mdc800->state=READY;
- break;
+ }
+ mdc800->state = READY;
+ break;
}
}
i++;
@@ -956,8 +865,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
****************************************************************************/
/* File Operations of this drivers */
-static const struct file_operations mdc800_device_ops =
-{
+static const struct file_operations mdc800_device_ops = {
.owner = THIS_MODULE,
.read = mdc800_device_read,
.write = mdc800_device_write,
@@ -973,12 +881,9 @@ static const struct usb_device_id mdc800_table[] = {
{ } /* Terminating entry */
};
-MODULE_DEVICE_TABLE (usb, mdc800_table);
-/*
- * USB Driver Struct for this device
- */
-static struct usb_driver mdc800_usb_driver =
-{
+MODULE_DEVICE_TABLE(usb, mdc800_table);
+/* USB Driver Struct for this device */
+static struct usb_driver mdc800_usb_driver = {
.name = "mdc800",
.probe = mdc800_usb_probe,
.disconnect = mdc800_usb_disconnect,
@@ -991,43 +896,43 @@ static struct usb_driver mdc800_usb_driver =
Init and Cleanup this driver (Main Functions)
*************************************************************************/
-static int __init usb_mdc800_init (void)
+static int __init usb_mdc800_init(void)
{
int retval = -ENODEV;
/* Allocate Memory */
- mdc800=kzalloc (sizeof (struct mdc800_data), GFP_KERNEL);
+ mdc800 = kzalloc(sizeof(struct mdc800_data), GFP_KERNEL);
if (!mdc800)
goto cleanup_on_fail;
mdc800->dev = NULL;
- mdc800->state=NOT_CONNECTED;
- mutex_init (&mdc800->io_lock);
+ mdc800->state = NOT_CONNECTED;
+ mutex_init(&mdc800->io_lock);
- init_waitqueue_head (&mdc800->irq_wait);
- init_waitqueue_head (&mdc800->write_wait);
- init_waitqueue_head (&mdc800->download_wait);
+ init_waitqueue_head(&mdc800->irq_wait);
+ init_waitqueue_head(&mdc800->write_wait);
+ init_waitqueue_head(&mdc800->download_wait);
mdc800->irq_woken = 0;
mdc800->downloaded = 0;
mdc800->written = 0;
- mdc800->irq_urb_buffer=kmalloc (8, GFP_KERNEL);
+ mdc800->irq_urb_buffer = kmalloc(8, GFP_KERNEL);
if (!mdc800->irq_urb_buffer)
goto cleanup_on_fail;
- mdc800->write_urb_buffer=kmalloc (8, GFP_KERNEL);
+ mdc800->write_urb_buffer = kmalloc(8, GFP_KERNEL);
if (!mdc800->write_urb_buffer)
goto cleanup_on_fail;
- mdc800->download_urb_buffer=kmalloc (64, GFP_KERNEL);
+ mdc800->download_urb_buffer = kmalloc(64, GFP_KERNEL);
if (!mdc800->download_urb_buffer)
goto cleanup_on_fail;
- mdc800->irq_urb=usb_alloc_urb (0, GFP_KERNEL);
+ mdc800->irq_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!mdc800->irq_urb)
goto cleanup_on_fail;
- mdc800->download_urb=usb_alloc_urb (0, GFP_KERNEL);
+ mdc800->download_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!mdc800->download_urb)
goto cleanup_on_fail;
- mdc800->write_urb=usb_alloc_urb (0, GFP_KERNEL);
+ mdc800->write_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!mdc800->write_urb)
goto cleanup_on_fail;
@@ -1045,8 +950,7 @@ static int __init usb_mdc800_init (void)
cleanup_on_fail:
- if (mdc800 != NULL)
- {
+ if (mdc800 != NULL) {
printk(KERN_ERR "mdc800: can't alloc memory!\n");
kfree(mdc800->download_urb_buffer);
@@ -1057,33 +961,32 @@ cleanup_on_fail:
usb_free_urb(mdc800->download_urb);
usb_free_urb(mdc800->irq_urb);
- kfree (mdc800);
+ kfree(mdc800);
}
mdc800 = NULL;
return retval;
}
-static void __exit usb_mdc800_cleanup (void)
+static void __exit usb_mdc800_cleanup(void)
{
- usb_deregister (&mdc800_usb_driver);
+ usb_deregister(&mdc800_usb_driver);
- usb_free_urb (mdc800->irq_urb);
- usb_free_urb (mdc800->download_urb);
- usb_free_urb (mdc800->write_urb);
+ usb_free_urb(mdc800->irq_urb);
+ usb_free_urb(mdc800->download_urb);
+ usb_free_urb(mdc800->write_urb);
- kfree (mdc800->irq_urb_buffer);
- kfree (mdc800->write_urb_buffer);
- kfree (mdc800->download_urb_buffer);
+ kfree(mdc800->irq_urb_buffer);
+ kfree(mdc800->write_urb_buffer);
+ kfree(mdc800->download_urb_buffer);
- kfree (mdc800);
+ kfree(mdc800);
mdc800 = NULL;
}
-module_init (usb_mdc800_init);
-module_exit (usb_mdc800_cleanup);
+module_init(usb_mdc800_init);
+module_exit(usb_mdc800_cleanup);
-MODULE_AUTHOR( DRIVER_AUTHOR );
-MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
-
--
1.7.10.4
--
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