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gpiolib: gpio_name_to_desc: factor out !name check

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Since name == NULL can't ever match, move the check out of
IRQ-disabled region.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Michał Mirosław 2020-03-15 17:34:34 +01:00 committed by Bartosz Golaszewski
parent 55f17e2ae9
commit ee203bbd63
1 changed files with 4 additions and 1 deletions
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5
drivers/gpio/gpiolib.c
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@ -301,6 +301,9 @@ static struct gpio_desc *gpio_name_to_desc(const char * const name)
struct gpio_device *gdev; struct gpio_device *gdev;
unsigned long flags; unsigned long flags;
if (!name)
return NULL;
spin_lock_irqsave(&gpio_lock, flags); spin_lock_irqsave(&gpio_lock, flags);
list_for_each_entry(gdev, &gpio_devices, list) { list_for_each_entry(gdev, &gpio_devices, list) {
@ -309,7 +312,7 @@ static struct gpio_desc *gpio_name_to_desc(const char * const name)
for (i = 0; i != gdev->ngpio; ++i) { for (i = 0; i != gdev->ngpio; ++i) {
struct gpio_desc *desc = &gdev->descs[i]; struct gpio_desc *desc = &gdev->descs[i];
if (!desc->name || !name) if (!desc->name)
continue; continue;
if (!strcmp(desc->name, name)) { if (!strcmp(desc->name, name)) {