linux-kernel - [PATCH] pinctrl: qcom: fix masking of pinmux functions

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Date:   Mon, 12 Sep 2016 11:36:55 +0200
From:   John Crispin <john@...ozen.org>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Stephen Boyd <stephen.boyd@...aro.org>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        John Crispin <john@...ozen.org>
Subject: [PATCH] pinctrl: qcom: fix masking of pinmux functions

The following commit introduced a regression by not properly masking the
calculated value.

commit 47a01ee9a6c39fe1 ("pinctrl: qcom: Clear all function selection bits")

Signed-off-by: John Crispin <john@...ozen.org>
---
 drivers/pinctrl/qcom/pinctrl-msm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c
index 51c42d7..775c883 100644
--- a/drivers/pinctrl/qcom/pinctrl-msm.c
+++ b/drivers/pinctrl/qcom/pinctrl-msm.c
@@ -156,7 +156,7 @@ static int msm_pinmux_set_mux(struct pinctrl_dev *pctldev,
 	spin_lock_irqsave(&pctrl->lock, flags);
 
 	val = readl(pctrl->regs + g->ctl_reg);
-	val &= mask;
+	val &= ~mask;
 	val |= i << g->mux_bit;
 	writel(val, pctrl->regs + g->ctl_reg);
 
-- 
1.7.10.4