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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2024-03-04 19:35:33 +0200 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2024-03-05 19:24:58 +0100 |
| commit | 8ae438f5ff168cd0e3ba6e3cef7240fa5d110528 (patch) | |
| tree | 62066e2aa1bf90983550f2b58109dafc385e13fb /drivers/gpio/gpiolib.c | |
| parent | e9c717bee8f109ec5f708297d2cc9d8b59348855 (diff) | |
| download | linux-stable-8ae438f5ff168cd0e3ba6e3cef7240fa5d110528.tar.gz linux-stable-8ae438f5ff168cd0e3ba6e3cef7240fa5d110528.tar.bz2 linux-stable-8ae438f5ff168cd0e3ba6e3cef7240fa5d110528.zip | |
gpiolib: Deduplicate cleanup for-loop in gpiochip_add_data_with_key()
There is no need to repeat for-loop twice in the error path in
gpiochip_add_data_with_key(). Deduplicate it. While at it,
rename loop variable to be more specific and avoid ambguity.
It also properly unwinds the SRCU, i.e. in reversed order of allocating.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'drivers/gpio/gpiolib.c')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 26 |
1 files changed, 11 insertions, 15 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index e2e583b40207..ce94e37bcbee 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -861,7 +861,7 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data, struct lock_class_key *request_key) { struct gpio_device *gdev; - unsigned int i, j; + unsigned int desc_index; int base = 0; int ret = 0; @@ -965,8 +965,8 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data, } } - for (i = 0; i < gc->ngpio; i++) - gdev->descs[i].gdev = gdev; + for (desc_index = 0; desc_index < gc->ngpio; desc_index++) + gdev->descs[desc_index].gdev = gdev; BLOCKING_INIT_NOTIFIER_HEAD(&gdev->line_state_notifier); BLOCKING_INIT_NOTIFIER_HEAD(&gdev->device_notifier); @@ -992,19 +992,16 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data, if (ret) goto err_cleanup_gdev_srcu; - for (i = 0; i < gc->ngpio; i++) { - struct gpio_desc *desc = &gdev->descs[i]; + for (desc_index = 0; desc_index < gc->ngpio; desc_index++) { + struct gpio_desc *desc = &gdev->descs[desc_index]; ret = init_srcu_struct(&desc->srcu); - if (ret) { - for (j = 0; j < i; j++) - cleanup_srcu_struct(&gdev->descs[j].srcu); - goto err_free_gpiochip_mask; - } + if (ret) + goto err_cleanup_desc_srcu; - if (gc->get_direction && gpiochip_line_is_valid(gc, i)) { + if (gc->get_direction && gpiochip_line_is_valid(gc, desc_index)) { assign_bit(FLAG_IS_OUT, - &desc->flags, !gc->get_direction(gc, i)); + &desc->flags, !gc->get_direction(gc, desc_index)); } else { assign_bit(FLAG_IS_OUT, &desc->flags, !gc->direction_input); @@ -1061,9 +1058,8 @@ err_free_hogs: err_remove_of_chip: of_gpiochip_remove(gc); err_cleanup_desc_srcu: - for (i = 0; i < gdev->ngpio; i++) - cleanup_srcu_struct(&gdev->descs[i].srcu); -err_free_gpiochip_mask: + while (desc_index--) + cleanup_srcu_struct(&gdev->descs[desc_index].srcu); gpiochip_free_valid_mask(gc); err_cleanup_gdev_srcu: cleanup_srcu_struct(&gdev->srcu); |