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 4.4-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-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a6566710adaa4a7dd5e0d99820ff9c9c30ee5951 Mon Sep 17 00:00:00 2001
From: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
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@xxxxxxxxxx>
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@xxxxxxxxxxxxxx>
Reported-by: Timur Tabi <timur@xxxxxxxxxxxxxx>
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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
@@ -597,10 +597,6 @@ 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@xxxxxxxxxx are
queue-4.4/pinctrl-qcom-don-t-clear-status-bit-on-irq_unmask.patch