diff options
| author | Liu Gang <Gang.Liu@nxp.com> | 2016-10-21 15:31:28 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-28 03:01:25 -0400 |
| commit | 02785b1fc2fbdc86c62ffa3f550865303ee3235d (patch) | |
| tree | 982dcf36c6cba08b873720aa4538e5d4b6a3bbf8 /drivers/gpio | |
| parent | 3afd8362fabd167bb04f79501f21dd67aa9cb99f (diff) | |
gpio: mpc8xxx: Correct irq handler function
commit d71cf15b865bdd45925f7b094d169aaabd705145 upstream.
From the beginning of the gpio-mpc8xxx.c, the "handle_level_irq"
has being used to handle GPIO interrupts in the PowerPC/Layerscape
platforms. But actually, almost all PowerPC/Layerscape platforms
assert an interrupt request upon either a high-to-low change or
any change on the state of the signal.
So the "handle_level_irq" is not reasonable for PowerPC/Layerscape
GPIO interrupt, it should be "handle_edge_irq". Otherwise the system
may lost some interrupts from the PIN's state changes.
Signed-off-by: Liu Gang <Gang.Liu@nxp.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-mpc8xxx.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c index 48ef368347ab..9e02cb6afb0b 100644 --- a/drivers/gpio/gpio-mpc8xxx.c +++ b/drivers/gpio/gpio-mpc8xxx.c @@ -329,7 +329,7 @@ static int mpc8xxx_gpio_irq_map(struct irq_domain *h, unsigned int irq, irq_hw_number_t hwirq) { irq_set_chip_data(irq, h->host_data); - irq_set_chip_and_handler(irq, &mpc8xxx_irq_chip, handle_level_irq); + irq_set_chip_and_handler(irq, &mpc8xxx_irq_chip, handle_edge_irq); return 0; } |