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authorGuennadi Liakhovetski <gl@dsa-ac.de>2006-06-28 11:42:02 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-06-28 12:55:03 -0400
commite033108bf7e585755350b554048229d1fd10a02e (patch)
treedf4d6e15667478b7351859b8db576c136d0e253c /arch/arm/mach-pxa
parent87c01737b1ccf821b93f74a26a0dc991dba16d19 (diff)
[ARM] 3672/1: PXA: don't probe output GPIOs for interrupt
Patch from Guennadi Liakhovetski Currently probe_irq_on() on PXA will silently reconfigure all output GPIOs, that are not configured as alternate functions, for input. Avoid that. Upon CPU reset all GPIOs are configured as inputs, so, if a GPIO is configured as output, it has been done so intentionally. Signed-off-by: G. Liakhovetski <gl@dsa-ac.de> Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-pxa')
-rw-r--r--arch/arm/mach-pxa/irq.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c
index 539b596005fc..d9635ff4b10c 100644
--- a/arch/arm/mach-pxa/irq.c
+++ b/arch/arm/mach-pxa/irq.c
@@ -88,8 +88,8 @@ static int pxa_gpio_irq_type(unsigned int irq, unsigned int type)
88 88
89 if (type == IRQT_PROBE) { 89 if (type == IRQT_PROBE) {
90 /* Don't mess with enabled GPIOs using preconfigured edges or 90 /* Don't mess with enabled GPIOs using preconfigured edges or
91 GPIOs set to alternate function during probe */ 91 GPIOs set to alternate function or to output during probe */
92 if ((GPIO_IRQ_rising_edge[idx] | GPIO_IRQ_falling_edge[idx]) & 92 if ((GPIO_IRQ_rising_edge[idx] | GPIO_IRQ_falling_edge[idx] | GPDR(gpio)) &
93 GPIO_bit(gpio)) 93 GPIO_bit(gpio))
94 return 0; 94 return 0;
95 if (GAFR(gpio) & (0x3 << (((gpio) & 0xf)*2))) 95 if (GAFR(gpio) & (0x3 << (((gpio) & 0xf)*2)))