Messages in this thread | | | Date | Thu, 5 Dec 2019 12:45:09 +0100 | From | Greg KH <> | Subject | Re: [PATCH] misc: genwqe: fix compile warnings |
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On Thu, Dec 05, 2019 at 07:16:55PM +0800, Hongbo Yao wrote: > Using the following command will get compile warnings: > make W=1 drivers/misc/genwqe/card_ddcb.o ARCH=x86_64 > > drivers/misc/genwqe/card_ddcb.c: In function setup_ddcb_queue: > drivers/misc/genwqe/card_ddcb.c:1024:6: warning: variable rc set but not > used [-Wunused-but-set-variable] > drivers/misc/genwqe/card_ddcb.c: In function genwqe_card_thread: > drivers/misc/genwqe/card_ddcb.c:1190:23: warning: variable rc set but > not used [-Wunused-but-set-variable] > > Reported-by: Hulk Robot <hulkci@huawei.com> > Signed-off-by: Hongbo Yao <yaohongbo@huawei.com> > --- > drivers/misc/genwqe/card_ddcb.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > > diff --git a/drivers/misc/genwqe/card_ddcb.c b/drivers/misc/genwqe/card_ddcb.c > index 026c6ca24540..905106579935 100644 > --- a/drivers/misc/genwqe/card_ddcb.c > +++ b/drivers/misc/genwqe/card_ddcb.c > @@ -1084,7 +1084,7 @@ static int setup_ddcb_queue(struct genwqe_dev *cd, struct ddcb_queue *queue) > queue->ddcb_daddr); > queue->ddcb_vaddr = NULL; > queue->ddcb_daddr = 0ull; > - return -ENODEV; > + return rc; > > } > > @@ -1179,7 +1179,7 @@ static irqreturn_t genwqe_vf_isr(int irq, void *dev_id) > */ > static int genwqe_card_thread(void *data) > { > - int should_stop = 0, rc = 0; > + int should_stop = 0; > struct genwqe_dev *cd = (struct genwqe_dev *)data; > > while (!kthread_should_stop()) { > @@ -1187,12 +1187,12 @@ static int genwqe_card_thread(void *data) > genwqe_check_ddcb_queue(cd, &cd->queue); > > if (GENWQE_POLLING_ENABLED) { > - rc = wait_event_interruptible_timeout( > + wait_event_interruptible_timeout( > cd->queue_waitq, > genwqe_ddcbs_in_flight(cd) || > (should_stop = kthread_should_stop()), 1); > } else { > - rc = wait_event_interruptible_timeout( > + wait_event_interruptible_timeout( > cd->queue_waitq, > genwqe_next_ddcb_ready(cd) || > (should_stop = kthread_should_stop()), HZ);
Why ignore the return value of these functions?
SHouldn't you fix the code to handle it properly?
thanks,
greg k-h
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