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Message-Id: <20180525210843.1821071-1-arnd@arndb.de>
Date: Fri, 25 May 2018 23:08:30 +0200
From: Arnd Bergmann <arnd@...db.de>
To: Thierry Reding <thierry.reding@...il.com>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Alexandre Torgue <alexandre.torgue@...com>
Cc: Arnd Bergmann <arnd@...db.de>,
Benjamin Gaignard <benjamin.gaignard@...aro.org>,
Fabrice Gasnier <fabrice.gasnier@...com>,
linux-pwm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] pwm: stm32: fix build warning with CONFIG_DMA_ENGINE disabled
Without dmaengine support, we get a harmless warning about an
unused function:
drivers/pwm/pwm-stm32.c:166:12: error: 'stm32_pwm_capture' defined but not used [-Werror=unused-function]
Changing the #ifdef to an IS_ENABLED() check shuts up that warning
and is slightly nicer to read.
Fixes: 53e38fe73f94 ("pwm: stm32: Add capture support")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
drivers/pwm/pwm-stm32.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c
index 60bfc07c4912..97bbc1f18fd6 100644
--- a/drivers/pwm/pwm-stm32.c
+++ b/drivers/pwm/pwm-stm32.c
@@ -484,9 +484,7 @@ static int stm32_pwm_apply_locked(struct pwm_chip *chip, struct pwm_device *pwm,
static const struct pwm_ops stm32pwm_ops = {
.owner = THIS_MODULE,
.apply = stm32_pwm_apply_locked,
-#if IS_ENABLED(CONFIG_DMA_ENGINE)
- .capture = stm32_pwm_capture,
-#endif
+ .capture = IS_ENABLED(CONFIG_DMA_ENGINE) ? stm32_pwm_capture : NULL,
};
static int stm32_pwm_set_breakinput(struct stm32_pwm *priv,
--
2.9.0
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