diff options
Diffstat (limited to 'drivers/usb/misc/yurex.c')
| -rw-r--r-- | drivers/usb/misc/yurex.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c index c640f98d20c5..70dff0db5354 100644 --- a/drivers/usb/misc/yurex.c +++ b/drivers/usb/misc/yurex.c @@ -400,7 +400,7 @@ static ssize_t yurex_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) { struct usb_yurex *dev; - int len = 0; + int len; char in_buffer[20]; unsigned long flags; @@ -441,7 +441,10 @@ static ssize_t yurex_write(struct file *file, const char __user *user_buffer, if (count == 0) goto error; - mutex_lock(&dev->io_mutex); + retval = mutex_lock_interruptible(&dev->io_mutex); + if (retval < 0) + return -EINTR; + if (dev->disconnected) { /* already disconnected */ mutex_unlock(&dev->io_mutex); retval = -ENODEV; @@ -507,8 +510,11 @@ static ssize_t yurex_write(struct file *file, const char __user *user_buffer, __func__, retval); goto error; } - if (set && timeout) + if (set && timeout) { + spin_lock_irq(&dev->lock); dev->bbu = c2; + spin_unlock_irq(&dev->lock); + } return timeout ? count : -EIO; error: @@ -527,4 +533,5 @@ static const struct file_operations yurex_fops = { module_usb_driver(yurex_driver); +MODULE_DESCRIPTION("USB YUREX driver support"); MODULE_LICENSE("GPL"); |