diff options
| author | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-04-29 01:49:07 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-04-30 20:27:53 +0300 |
| commit | 094af36a3a57ddfeb942fd2990f15b570430a81e (patch) | |
| tree | 4da5ed454306867dee4a55b9a5f3156aad438a5c /drivers | |
| parent | b036f1cb6e268f2a8c4433c3c26cbef95642b79d (diff) | |
| download | linux-094af36a3a57ddfeb942fd2990f15b570430a81e.tar.xz | |
[media] zc3xx: remove dead code and uneeded gotos
As reported by smatch:
drivers/media/usb/gspca/zc3xx.c:5994 transfer_update() info: ignoring unreachable code.
That happens because there's a return that it is never called,
as the work queue runs an infinite loop, except when the device is
put to sleep or an error happens.
When an error happens, a break statement is enough to go out of
the loop. So, let's remove the goto, as break is the typical
instruction used to end a loop.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/usb/gspca/zc3xx.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/media/usb/gspca/zc3xx.c b/drivers/media/usb/gspca/zc3xx.c index 3762a045f744..c5d8ee6fa3c7 100644 --- a/drivers/media/usb/gspca/zc3xx.c +++ b/drivers/media/usb/gspca/zc3xx.c @@ -5942,23 +5942,23 @@ static void transfer_update(struct work_struct *work) reg07 = 0; good = 0; - for (;;) { + while (1) { msleep(100); /* To protect gspca_dev->usb_buf and gspca_dev->usb_err */ mutex_lock(&gspca_dev->usb_lock); #ifdef CONFIG_PM if (gspca_dev->frozen) - goto err; + break; #endif if (!gspca_dev->present || !gspca_dev->streaming) - goto err; + break; /* Bit 0 of register 11 indicates FIFO overflow */ gspca_dev->usb_err = 0; reg11 = reg_r(gspca_dev, 0x0011); if (gspca_dev->usb_err) - goto err; + break; change = reg11 & 0x01; if (change) { /* overflow */ @@ -5987,12 +5987,12 @@ static void transfer_update(struct work_struct *work) gspca_dev->usb_err = 0; reg_w(gspca_dev, reg07, 0x0007); if (gspca_dev->usb_err) - goto err; + break; } mutex_unlock(&gspca_dev->usb_lock); } - return; -err: + + /* Something went wrong. Unlock and return */ mutex_unlock(&gspca_dev->usb_lock); } |