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authoryu kuai <yukuai3@huawei.com>2020-01-20 19:51:43 +0800
committerThierry Reding <thierry.reding@gmail.com>2020-01-20 15:40:49 +0100
commit9871abffc81048e20f02e15d6aa4558a44ad53ea (patch)
tree91788d3bbf5823872ca3294a52cb1108e9e79984 /drivers/pwm/pwm-pca9685.c
parent413c2a110d649a3a313ee91920e3d9373b9f2045 (diff)
downloadlinux-9871abffc81048e20f02e15d6aa4558a44ad53ea.tar.bz2
pwm: Remove set but not set variable 'pwm'
Fixes gcc '-Wunused-but-set-variable' warning: drivers/pwm/pwm-pca9685.c: In function ‘pca9685_pwm_gpio_free’: drivers/pwm/pwm-pca9685.c:162:21: warning: variable ‘pwm’ set but not used [-Wunused-but-set-variable] It is never used, and so can be removed. In that case, hold and release the lock 'pca->lock' can be removed since nothing will be done between them. Fixes: e926b12c611c ("pwm: Clear chip_data in pwm_put()") Signed-off-by: yu kuai <yukuai3@huawei.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm/pwm-pca9685.c')
-rw-r--r--drivers/pwm/pwm-pca9685.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/pwm/pwm-pca9685.c b/drivers/pwm/pwm-pca9685.c
index 168684b02ebc..b07bdca3d510 100644
--- a/drivers/pwm/pwm-pca9685.c
+++ b/drivers/pwm/pwm-pca9685.c
@@ -159,13 +159,9 @@ static void pca9685_pwm_gpio_set(struct gpio_chip *gpio, unsigned int offset,
static void pca9685_pwm_gpio_free(struct gpio_chip *gpio, unsigned int offset)
{
struct pca9685 *pca = gpiochip_get_data(gpio);
- struct pwm_device *pwm;
pca9685_pwm_gpio_set(gpio, offset, 0);
pm_runtime_put(pca->chip.dev);
- mutex_lock(&pca->lock);
- pwm = &pca->chip.pwms[offset];
- mutex_unlock(&pca->lock);
}
static int pca9685_pwm_gpio_get_direction(struct gpio_chip *chip,