linux-kernel - [PATCH 4.8 108/125] pinctrl: qcom: fix masking of pinmux functions

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Message-Id: <20161029134951.635960352@linuxfoundation.org>
Date:   Sat, 29 Oct 2016 09:50:26 -0400
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, John Crispin <john@...ozen.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Stephen Boyd <stephen.boyd@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>
Subject: [PATCH 4.8 108/125] pinctrl: qcom: fix masking of pinmux functions

4.8-stable review patch.  If anyone has any objections, please let me know.

------------------

From: John Crispin <john@...ozen.org>

commit 6bcf3f63394b9c4f133e4499349d786d7f531473 upstream.

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

Fixes: 47a01ee9a6c3 ("pinctrl: qcom: Clear all function selection bits")
Signed-off-by: John Crispin <john@...ozen.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Reviewed-by: Stephen Boyd <stephen.boyd@...aro.org>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/pinctrl/qcom/pinctrl-msm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- 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 pin
 	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);