diff options
author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2012-06-06 05:49:23 -0400 |
---|---|---|
committer | Linus Walleij <linus.walleij@linaro.org> | 2012-07-05 09:40:35 -0400 |
commit | 33a4e985bab25d6753b52d1322b4e2fff706dd4f (patch) | |
tree | c240b8622c3d34ee02eacfae7065fe82132513eb /drivers/gpio | |
parent | f567fde24640cf6f2d6416196bfc8b3fefc8e433 (diff) |
gpio/mxc: make irqs work for fsl,imx21-gpio devices
The chained handler was set for the platform device with id == 0.
When the gpio devices are instantiated by a device tree, all have id ==
-1 and so the handler was unset resulting in unusable gpio irqs on
i.MX21 and i.MX27 (when using oftree).
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r-- | drivers/gpio/gpio-mxc.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c index c337143b18f..c89c4c1e668 100644 --- a/drivers/gpio/gpio-mxc.c +++ b/drivers/gpio/gpio-mxc.c | |||
@@ -398,10 +398,12 @@ static int __devinit mxc_gpio_probe(struct platform_device *pdev) | |||
398 | writel(~0, port->base + GPIO_ISR); | 398 | writel(~0, port->base + GPIO_ISR); |
399 | 399 | ||
400 | if (mxc_gpio_hwtype == IMX21_GPIO) { | 400 | if (mxc_gpio_hwtype == IMX21_GPIO) { |
401 | /* setup one handler for all GPIO interrupts */ | 401 | /* |
402 | if (pdev->id == 0) | 402 | * Setup one handler for all GPIO interrupts. Actually setting |
403 | irq_set_chained_handler(port->irq, | 403 | * the handler is needed only once, but doing it for every port |
404 | mx2_gpio_irq_handler); | 404 | * is more robust and easier. |
405 | */ | ||
406 | irq_set_chained_handler(port->irq, mx2_gpio_irq_handler); | ||
405 | } else { | 407 | } else { |
406 | /* setup one handler for each entry */ | 408 | /* setup one handler for each entry */ |
407 | irq_set_chained_handler(port->irq, mx3_gpio_irq_handler); | 409 | irq_set_chained_handler(port->irq, mx3_gpio_irq_handler); |