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staging: wfx: gpiod_get_value() can return an error

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Smatch complains:

    hif_rx.c:98 hif_wakeup_indication() warn: 'gpiod_get_value(wdev->pdata.gpio_wakeup)' returns positive and negative
    bh.c:24 device_wakeup() warn: 'gpiod_get_value_cansleep(wdev->pdata.gpio_wakeup)' returns positive and negative

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20201009171307.864608-7-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jérôme Pouiller 2020-10-09 19:13:05 +02:00 committed by Greg Kroah-Hartman
parent 5f841fe698
commit 8522d62e6b
2 changed files with 3 additions and 3 deletions
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2
drivers/staging/wfx/bh.c
View file

@ -21,7 +21,7 @@ static void device_wakeup(struct wfx_dev *wdev)
if (!wdev->pdata.gpio_wakeup)
return;
if (gpiod_get_value_cansleep(wdev->pdata.gpio_wakeup))
if (gpiod_get_value_cansleep(wdev->pdata.gpio_wakeup) >= 0)
return;
if (wfx_api_older_than(wdev, 1, 4)) {

4
drivers/staging/wfx/hif_rx.c
View file

@ -94,8 +94,8 @@ static int hif_startup_indication(struct wfx_dev *wdev,
static int hif_wakeup_indication(struct wfx_dev *wdev,
const struct hif_msg *hif, const void *buf)
{
if (!wdev->pdata.gpio_wakeup
|| !gpiod_get_value(wdev->pdata.gpio_wakeup)) {
if (!wdev->pdata.gpio_wakeup ||
gpiod_get_value(wdev->pdata.gpio_wakeup) == 0) {
dev_warn(wdev->dev, "unexpected wake-up indication\n");
return -EIO;
}