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[media] pvrusb2: fix smatch errors

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These are false positives, but still easy to fix.

pvrusb2-hdw.c:3676 pvr2_send_request_ex() error: we previously assumed 'write_data' could be null (see line 3648)
pvrusb2-hdw.c:3829 pvr2_send_request_ex() error: we previously assumed 'read_data' could be null (see line 3649)

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Hans Verkuil 2016-04-15 12:35:32 -03:00 committed by Mauro Carvalho Chehab
parent 86b2749ba7
commit 6222029389
1 changed files with 4 additions and 5 deletions
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9
drivers/media/usb/pvrusb2/pvrusb2-hdw.c
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@ -3672,11 +3672,10 @@ static int pvr2_send_request_ex(struct pvr2_hdw *hdw,
hdw->cmd_debug_state = 1;
if (write_len) {
if (write_len && write_data)
hdw->cmd_debug_code = ((unsigned char *)write_data)[0];
} else {
else
hdw->cmd_debug_code = 0;
}
hdw->cmd_debug_write_len = write_len;
hdw->cmd_debug_read_len = read_len;
@ -3688,7 +3687,7 @@ static int pvr2_send_request_ex(struct pvr2_hdw *hdw,
setup_timer(&timer, pvr2_ctl_timeout, (unsigned long)hdw);
timer.expires = jiffies + timeout;
if (write_len) {
if (write_len && write_data) {
hdw->cmd_debug_state = 2;
/* Transfer write data to internal buffer */
for (idx = 0; idx < write_len; idx++) {
@ -3795,7 +3794,7 @@ static int pvr2_send_request_ex(struct pvr2_hdw *hdw,
goto done;
}
}
if (read_len) {
if (read_len && read_data) {
/* Validate results of read request */
if ((hdw->ctl_read_urb->status != 0) &&
(hdw->ctl_read_urb->status != -ENOENT) &&