From 127a9a403652ca0db81abf7322444500e90c1405 Mon Sep 17 00:00:00 2001
From: Bjorn Andersson <bjorn.andersson@linaro.org>
Date: Thu, 28 Oct 2021 09:35:48 -0700
Subject: drm/bridge: sn65dsi86: ti_sn65dsi86_read_u16() __maybe_unused
Git-commit: 2b3374306b315be02db0f67d3102a0d1e1357270
Patch-mainline: v5.17-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

When built without CONFIG_PWM there are no references to
ti_sn65dsi86_read_u16(), avoid the W=1 build warning by marking the
function as __maybe_unused.

__maybe_unused is used insted of a #ifdef guard as it looks slighly
cleaner and it avoids issues if in the future other permutations of the
config options would use the function.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: cea86c5bb442 ("drm/bridge: ti-sn65dsi86: Implement the pwm_chip")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211028163548.273736-1-bjorn.andersson@linaro.org
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/bridge/ti-sn65dsi86.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index ae15baaca476..02b490671f8f 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
@@ -215,8 +215,8 @@ static const struct regmap_config ti_sn65dsi86_regmap_config = {
 	.cache_type = REGCACHE_NONE,
 };
 
-static int ti_sn65dsi86_read_u16(struct ti_sn65dsi86 *pdata,
-				 unsigned int reg, u16 *val)
+static int __maybe_unused ti_sn65dsi86_read_u16(struct ti_sn65dsi86 *pdata,
+						unsigned int reg, u16 *val)
 {
 	u8 buf[2];
 	int ret;
-- 
2.38.1