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Message-Id: <20230809131442.25524-1-brgl@bgdev.pl>
Date: Wed, 9 Aug 2023 15:14:41 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Linus Walleij <linus.walleij@...aro.org>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Kent Gibson <warthog618@...il.com>
Cc: linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 1/2] gpio: sim: use sysfs_streq() and avoid an strdup()
From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
When comparing strings passed to us from configfs, we can pass the page
argument directly to sysfs_streq() and avoid manual string trimming.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
drivers/gpio/gpio-sim.c | 15 +++------------
1 file changed, 3 insertions(+), 12 deletions(-)
diff --git a/drivers/gpio/gpio-sim.c b/drivers/gpio/gpio-sim.c
index 8b49b0abacd5..dc4097dc0fbc 100644
--- a/drivers/gpio/gpio-sim.c
+++ b/drivers/gpio/gpio-sim.c
@@ -1272,7 +1272,6 @@ gpio_sim_hog_config_direction_store(struct config_item *item,
{
struct gpio_sim_hog *hog = to_gpio_sim_hog(item);
struct gpio_sim_device *dev = gpio_sim_hog_get_device(hog);
- char *trimmed;
int dir;
mutex_lock(&dev->lock);
@@ -1282,23 +1281,15 @@ gpio_sim_hog_config_direction_store(struct config_item *item,
return -EBUSY;
}
- trimmed = gpio_sim_strdup_trimmed(page, count);
- if (!trimmed) {
- mutex_unlock(&dev->lock);
- return -ENOMEM;
- }
-
- if (strcmp(trimmed, "input") == 0)
+ if (sysfs_streq(page, "input"))
dir = GPIOD_IN;
- else if (strcmp(trimmed, "output-high") == 0)
+ else if (sysfs_streq(page, "output-high"))
dir = GPIOD_OUT_HIGH;
- else if (strcmp(trimmed, "output-low") == 0)
+ else if (sysfs_streq(page, "output-low"))
dir = GPIOD_OUT_LOW;
else
dir = -EINVAL;
- kfree(trimmed);
-
if (dir < 0) {
mutex_unlock(&dev->lock);
return dir;
--
2.39.2
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