diff options
Diffstat (limited to 'drivers/usb/misc/usblcd.c')
| -rw-r--r-- | drivers/usb/misc/usblcd.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/usb/misc/usblcd.c b/drivers/usb/misc/usblcd.c index dcdf9b4abb7cc..096ab30296763 100644 --- a/drivers/usb/misc/usblcd.c +++ b/drivers/usb/misc/usblcd.c @@ -109,6 +109,7 @@ static ssize_t lcd_read(struct file *file, char __user * buffer, size_t count, l { struct usb_lcd *dev; int retval = 0; + int bytes_read; dev = (struct usb_lcd *)file->private_data; @@ -117,14 +118,14 @@ static ssize_t lcd_read(struct file *file, char __user * buffer, size_t count, l usb_rcvbulkpipe(dev->udev, dev->bulk_in_endpointAddr), dev->bulk_in_buffer, min(dev->bulk_in_size, count), - &count, 10000); + &bytes_read, 10000); /* if the read was successful, copy the data to userspace */ if (!retval) { - if (copy_to_user(buffer, dev->bulk_in_buffer, count)) + if (copy_to_user(buffer, dev->bulk_in_buffer, bytes_read)) retval = -EFAULT; else - retval = count; + retval = bytes_read; } return retval; |