diff options
| author | Terry Zhou <bjzhou@marvell.com> | 2018-05-23 10:44:05 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2018-05-24 10:16:43 +0200 |
| commit | 702d1e81feae70aa16ca364b4d2d95ccad801022 (patch) | |
| tree | a3bd74e942498131c314d7ddbd469c4406e6bf72 /drivers | |
| parent | 973c1714de308bb9424f0eb5aaab275d1641a720 (diff) | |
| download | linux-0-day-702d1e81feae70aa16ca364b4d2d95ccad801022.tar.gz linux-0-day-702d1e81feae70aa16ca364b4d2d95ccad801022.tar.xz | |
pinctrl: armada-37xx: Fix spurious irq management
Until now, if we found spurious irq in irq_handler, we only updated the
status in register but not the status in the code. Due to this the system
will got stuck dues to the infinite loop
[gregory.clement@bootlin.com: update comment and add fix and stable tags]
Fixes: 30ac0d3b0702 ("pinctrl: armada-37xx: Add edge both type gpio irq support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Terry Zhou <bjzhou@marvell.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pinctrl/mvebu/pinctrl-armada-37xx.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c index 0f1eafba0ded4..674ffdf8103c3 100644 --- a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c +++ b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c @@ -666,12 +666,13 @@ static void armada_37xx_irq_handler(struct irq_desc *desc) writel(1 << hwirq, info->base + IRQ_STATUS + 4 * i); - continue; + goto update_status; } } generic_handle_irq(virq); +update_status: /* Update status in case a new IRQ appears */ spin_lock_irqsave(&info->irq_lock, flags); status = readl_relaxed(info->base + |