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cdc-acm: cleanup debugging in submission path

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Actually make it retutn useful information.

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oliver Neukum 2016-09-13 16:44:36 +02:00 committed by Greg Kroah-Hartman
parent 21b031fbd1
commit 46e75075ba
1 changed files with 4 additions and 4 deletions
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8
drivers/usb/class/cdc-acm.c
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@ -368,17 +368,17 @@ static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags)
if (!test_and_clear_bit(index, &acm->read_urbs_free))
return 0;
dev_vdbg(&acm->data->dev, "%s - urb %d\n", __func__, index);
res = usb_submit_urb(acm->read_urbs[index], mem_flags);
if (res) {
if (res != -EPERM) {
dev_err(&acm->data->dev,
"%s - usb_submit_urb failed: %d\n",
__func__, res);
"urb %d failed submission with %d\n",
index, res);
}
set_bit(index, &acm->read_urbs_free);
return res;
} else {
dev_vdbg(&acm->data->dev, "submitted urb %d\n", index);
}
return 0;