Patch "pinctrl: qcom: Don't clear status bit on irq_unmask" has been added to the 4.9-stable tree

Patch "pinctrl: qcom: Don't clear status bit on irq_unmask" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    pinctrl: qcom: Don't clear status bit on irq_unmask

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     pinctrl-qcom-don-t-clear-status-bit-on-irq_unmask.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From a6566710adaa4a7dd5e0d99820ff9c9c30ee5951 Mon Sep 17 00:00:00 2001
From: Bjorn Andersson <bjorn.andersson@linaro.org>
Date: Tue, 14 Mar 2017 08:23:26 -0700
Subject: pinctrl: qcom: Don't clear status bit on irq_unmask

From: Bjorn Andersson <bjorn.andersson@linaro.org>

commit a6566710adaa4a7dd5e0d99820ff9c9c30ee5951 upstream.

Clearing the status bit on irq_unmask will discard any pending interrupt
that did arrive after the irq_ack, i.e. while the IRQ handler function
was executing.

Fixes: f365be092572 ("pinctrl: Add Qualcomm TLMM driver")
Cc: Stephen Boyd <sboyd@codeaurora.org>
Reported-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/pinctrl/qcom/pinctrl-msm.c |    4 ----
 1 file changed, 4 deletions(-)

--- a/drivers/pinctrl/qcom/pinctrl-msm.c
+++ b/drivers/pinctrl/qcom/pinctrl-msm.c
@@ -594,10 +594,6 @@ static void msm_gpio_irq_unmask(struct i
 
 	spin_lock_irqsave(&pctrl->lock, flags);
 
-	val = readl(pctrl->regs + g->intr_status_reg);
-	val &= ~BIT(g->intr_status_bit);
-	writel(val, pctrl->regs + g->intr_status_reg);
-
 	val = readl(pctrl->regs + g->intr_cfg_reg);
 	val |= BIT(g->intr_enable_bit);
 	writel(val, pctrl->regs + g->intr_cfg_reg);


Patches currently in stable-queue which might be from bjorn.andersson@linaro.org are

queue-4.9/pinctrl-qcom-don-t-clear-status-bit-on-irq_unmask.patch