Author: loos
Date: Wed Feb 4 18:35:49 2015
New Revision: 278216
URL: https://svnweb.freebsd.org/changeset/base/278216
Log:
Fix a bug where an interrupt could be masked unintentionally when
bus_config_intr() is called with the same interrupt type and polarity that
is already set.
Pointy hat: loos
Modified:
head/sys/arm/ti/ti_gpio.c
Modified: head/sys/arm/ti/ti_gpio.c
==============================================================================
--- head/sys/arm/ti/ti_gpio.c Wed Feb 4 18:15:28 2015 (r278215)
+++ head/sys/arm/ti/ti_gpio.c Wed Feb 4 18:35:49 2015 (r278216)
@@ -1004,7 +1004,7 @@ ti_gpio_config_intr(device_t dev, int ir
val |= TI_GPIO_MASK(irq);
ti_gpio_write_4(sc, TI_GPIO_BANK(irq), reg, val);
}
- if (oldreg != 0) {
+ if (reg != oldreg && oldreg != 0) {
/* Remove the old settings. */
val = ti_gpio_read_4(sc, TI_GPIO_BANK(irq), oldreg);
val &= ~TI_GPIO_MASK(irq);
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