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path: root/drivers/usb/image/mdc800.c
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Diffstat (limited to 'drivers/usb/image/mdc800.c')
-rw-r--r--drivers/usb/image/mdc800.c67
1 files changed, 33 insertions, 34 deletions
diff --git a/drivers/usb/image/mdc800.c b/drivers/usb/image/mdc800.c
index 049871145d63..08daf400f985 100644
--- a/drivers/usb/image/mdc800.c
+++ b/drivers/usb/image/mdc800.c
@@ -96,6 +96,7 @@
#include <linux/module.h>
#include <linux/smp_lock.h>
#include <linux/wait.h>
+#include <linux/mutex.h>
#include <linux/usb.h>
#include <linux/fs.h>
@@ -169,7 +170,7 @@ struct mdc800_data
int out_count; // Bytes in the buffer
int open; // Camera device open ?
- struct semaphore io_lock; // IO -lock
+ struct mutex io_lock; // IO -lock
char in [8]; // Command Input Buffer
int in_count;
@@ -497,7 +498,7 @@ static int mdc800_usb_probe (struct usb_interface *intf,
info ("Found Mustek MDC800 on USB.");
- down (&mdc800->io_lock);
+ mutex_lock(&mdc800->io_lock);
retval = usb_register_dev(intf, &mdc800_class);
if (retval) {
@@ -542,7 +543,7 @@ static int mdc800_usb_probe (struct usb_interface *intf,
mdc800->state=READY;
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
usb_set_intfdata(intf, mdc800);
return 0;
@@ -620,7 +621,7 @@ static int mdc800_device_open (struct inode* inode, struct file *file)
int retval=0;
int errn=0;
- down (&mdc800->io_lock);
+ mutex_lock(&mdc800->io_lock);
if (mdc800->state == NOT_CONNECTED)
{
@@ -656,7 +657,7 @@ static int mdc800_device_open (struct inode* inode, struct file *file)
dbg ("Mustek MDC800 device opened.");
error_out:
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return errn;
}
@@ -669,7 +670,7 @@ static int mdc800_device_release (struct inode* inode, struct file *file)
int retval=0;
dbg ("Mustek MDC800 device closed.");
- down (&mdc800->io_lock);
+ mutex_lock(&mdc800->io_lock);
if (mdc800->open && (mdc800->state != NOT_CONNECTED))
{
usb_kill_urb(mdc800->irq_urb);
@@ -682,7 +683,7 @@ static int mdc800_device_release (struct inode* inode, struct file *file)
retval=-EIO;
}
- up(&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return retval;
}
@@ -695,21 +696,21 @@ static ssize_t mdc800_device_read (struct file *file, char __user *buf, size_t l
size_t left=len, sts=len; /* single transfer size */
char __user *ptr = buf;
- down (&mdc800->io_lock);
+ mutex_lock(&mdc800->io_lock);
if (mdc800->state == NOT_CONNECTED)
{
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EBUSY;
}
if (mdc800->state == WORKING)
{
warn ("Illegal State \"working\" reached during read ?!");
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EBUSY;
}
if (!mdc800->open)
{
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EBUSY;
}
@@ -717,7 +718,7 @@ static ssize_t mdc800_device_read (struct file *file, char __user *buf, size_t l
{
if (signal_pending (current))
{
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EINTR;
}
@@ -736,7 +737,7 @@ static ssize_t mdc800_device_read (struct file *file, char __user *buf, size_t l
if (usb_submit_urb (mdc800->download_urb, GFP_KERNEL))
{
err ("Can't submit download urb (status=%i)",mdc800->download_urb->status);
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return len-left;
}
wait_event_timeout(mdc800->download_wait, mdc800->downloaded,
@@ -745,14 +746,14 @@ static ssize_t mdc800_device_read (struct file *file, char __user *buf, size_t l
if (mdc800->download_urb->status != 0)
{
err ("request download-bytes fails (status=%i)",mdc800->download_urb->status);
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return len-left;
}
}
else
{
/* No more bytes -> that's an error*/
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EIO;
}
}
@@ -761,7 +762,7 @@ static ssize_t mdc800_device_read (struct file *file, char __user *buf, size_t l
/* Copy Bytes */
if (copy_to_user(ptr, &mdc800->out [mdc800->out_ptr],
sts)) {
- up(&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EFAULT;
}
ptr+=sts;
@@ -770,7 +771,7 @@ static ssize_t mdc800_device_read (struct file *file, char __user *buf, size_t l
}
}
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return len-left;
}
@@ -785,15 +786,15 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
{
size_t i=0;
- down (&mdc800->io_lock);
+ mutex_lock(&mdc800->io_lock);
if (mdc800->state != READY)
{
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EBUSY;
}
if (!mdc800->open )
{
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EBUSY;
}
@@ -802,13 +803,13 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
unsigned char c;
if (signal_pending (current))
{
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EINTR;
}
if(get_user(c, buf+i))
{
- up(&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EFAULT;
}
@@ -829,7 +830,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
}
else
{
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EIO;
}
@@ -841,7 +842,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
if (mdc800_usb_waitForIRQ (0,TO_GET_READY))
{
err ("Camera didn't get ready.\n");
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EIO;
}
@@ -853,7 +854,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
if (usb_submit_urb (mdc800->write_urb, GFP_KERNEL))
{
err ("submitting write urb fails (status=%i)", mdc800->write_urb->status);
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EIO;
}
wait_event_timeout(mdc800->write_wait, mdc800->written, TO_WRITE_GET_READY*HZ/1000);
@@ -861,7 +862,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
if (mdc800->state == WORKING)
{
usb_kill_urb(mdc800->write_urb);
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EIO;
}
@@ -873,7 +874,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
{
err ("call 0x07 before 0x05,0x3e");
mdc800->state=READY;
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EIO;
}
mdc800->pic_len=-1;
@@ -892,7 +893,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
if (mdc800_usb_waitForIRQ (1,TO_READ_FROM_IRQ))
{
err ("requesting answer from irq fails");
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EIO;
}
@@ -920,7 +921,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
if (mdc800_usb_waitForIRQ (0,TO_DEFAULT_COMMAND))
{
err ("Command Timeout.");
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return -EIO;
}
}
@@ -930,7 +931,7 @@ static ssize_t mdc800_device_write (struct file *file, const char __user *buf, s
}
i++;
}
- up (&mdc800->io_lock);
+ mutex_unlock(&mdc800->io_lock);
return i;
}
@@ -978,15 +979,13 @@ static int __init usb_mdc800_init (void)
{
int retval = -ENODEV;
/* Allocate Memory */
- mdc800=kmalloc (sizeof (struct mdc800_data), GFP_KERNEL);
+ mdc800=kzalloc (sizeof (struct mdc800_data), GFP_KERNEL);
if (!mdc800)
goto cleanup_on_fail;
- memset(mdc800, 0, sizeof(struct mdc800_data));
mdc800->dev = NULL;
- mdc800->open=0;
mdc800->state=NOT_CONNECTED;
- init_MUTEX (&mdc800->io_lock);
+ mutex_init (&mdc800->io_lock);
init_waitqueue_head (&mdc800->irq_wait);
init_waitqueue_head (&mdc800->write_wait);
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