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authorThadeu Lima de Souza Cascardo <cascardo@holoscopio.com>2009-06-25 14:41:24 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-25 11:24:26 -0700
commit42dd2aa6496a2e87e496aac5494d2e1d6096c85b (patch)
tree81ef166b1155f557574972d6452dfb2d7a1943ba /drivers/usb
parenta37f6b84c4f3d3ca61634a7b36bf64c6ea452271 (diff)
acm: Return ENODEV instead of EINVAL when trying to open ACM device.
This is required, otherwise a user will get a EINVAL while opening a non-existing device, instead of ENODEV. This is what I get with this patch applied now instead of an "Invalid argument". cascardo@vespa:~$ cat /dev/ttyACM0 cat: /dev/ttyACM0: No such device cascardo@vespa:~$ Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/class/cdc-acm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 38bfdb0f6660..02eb60bb6795 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -550,7 +550,7 @@ static void acm_waker(struct work_struct *waker)
static int acm_tty_open(struct tty_struct *tty, struct file *filp)
{
struct acm *acm;
- int rv = -EINVAL;
+ int rv = -ENODEV;
int i;
dbg("Entering acm_tty_open.");