* [PATCH 6/9] gpio: gpio-mxs: fix race in installing chained IRQ handler
@ 2015-06-16 22:06 Russell King
0 siblings, 0 replies; only message in thread
From: Russell King @ 2015-06-16 22:06 UTC (permalink / raw)
To: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
linux-gpio-u79uwXL29TY76Z2rM5mHXA,
linux-tegra-u79uwXL29TY76Z2rM5mHXA, Thomas Gleixner
Cc: Alexandre Courbot, Hans Ulli Kroll, Jason Cooper, Lee Jones,
Linus Walleij, Thierry Reding
Fix a race where a pending interrupt could be received and the handler
called before the handler's data has been setup, by converting to
irq_set_chained_handler_and_data().
Signed-off-by: Russell King <rmk+kernel-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>
---
Depends on patch 1.
drivers/gpio/gpio-mxs.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpio/gpio-mxs.c b/drivers/gpio/gpio-mxs.c
index 84cbda6acdda..eac872748ee7 100644
--- a/drivers/gpio/gpio-mxs.c
+++ b/drivers/gpio/gpio-mxs.c
@@ -320,8 +320,8 @@ static int mxs_gpio_probe(struct platform_device *pdev)
mxs_gpio_init_gc(port, irq_base);
/* setup one handler for each entry */
- irq_set_chained_handler(port->irq, mxs_gpio_irq_handler);
- irq_set_handler_data(port->irq, port);
+ irq_set_chained_handler_and_data(port->irq, mxs_gpio_irq_handler,
+ port);
err = bgpio_init(&port->bgc, &pdev->dev, 4,
port->base + PINCTRL_DIN(port),
--
2.1.0
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2015-06-16 22:06 [PATCH 6/9] gpio: gpio-mxs: fix race in installing chained IRQ handler Russell King
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