[4.14,105/122] pinctrl: gemini: Mask and set properly

Message ID 20191122100832.406597374@linuxfoundation.org
State New
Headers show
Series
  • Untitled series #25175
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Commit Message

Greg Kroah-Hartman Nov. 22, 2019, 10:29 a.m.
From: Linus Walleij <linus.walleij@linaro.org>


[ Upstream commit d17f477c5bc6b4a5dd9f51ae263870da132a8e89 ]

The code was written under the assumption that the
regmap_update_bits() would mask the bits in the mask and
set the bits in the value.

It missed the points that it will not set bits in the value
unless these are also masked in the mask. Set value bits
that are not in the mask will simply be ignored.

Fixes: 06351d133dea ("pinctrl: add a Gemini SoC pin controller")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Signed-off-by: Sasha Levin <sashal@kernel.org>

---
 drivers/pinctrl/pinctrl-gemini.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

-- 
2.20.1

Patch

diff --git a/drivers/pinctrl/pinctrl-gemini.c b/drivers/pinctrl/pinctrl-gemini.c
index 39e6221e71000..05441dc2519d2 100644
--- a/drivers/pinctrl/pinctrl-gemini.c
+++ b/drivers/pinctrl/pinctrl-gemini.c
@@ -2164,7 +2164,8 @@  static int gemini_pmx_set_mux(struct pinctrl_dev *pctldev,
 		 func->name, grp->name);
 
 	regmap_read(pmx->map, GLOBAL_MISC_CTRL, &before);
-	regmap_update_bits(pmx->map, GLOBAL_MISC_CTRL, grp->mask,
+	regmap_update_bits(pmx->map, GLOBAL_MISC_CTRL,
+			   grp->mask | grp->value,
 			   grp->value);
 	regmap_read(pmx->map, GLOBAL_MISC_CTRL, &after);