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@xxxxxxxxxxxxxxx>
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);
}
--
2.1.0
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
