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[media] gspca_kinect: fix kinect_read() error path 

The error checking code relative to the invocations of kinect_read()
does not return the actual return code of the function just called, it
returns "res" which still contains the value of the last invocation of
a previous kinect_write().

Return the proper value, and while at it also report with -EREMOTEIO the
case of a partial transfer.

Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Antonio Ospite 2013-12-30 13:41:45 -03:00 committed by Mauro Carvalho Chehab
parent 340a30c514
commit 840d94eace
1 changed files with 1 additions and 1 deletions
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2
drivers/media/usb/gspca/kinect.c
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@ -158,7 +158,7 @@ static int send_cmd(struct gspca_dev *gspca_dev, uint16_t cmd, void *cmdbuf,
PDEBUG(D_USBO, "Control reply: %d", res);
if (actual_len < sizeof(*rhdr)) {
pr_err("send_cmd: Input control transfer failed (%d)\n", res);
return res;
return actual_len < 0 ? actual_len : -EREMOTEIO;
}
actual_len -= sizeof(*rhdr);