diff options
| author | Steven Rostedt <srostedt@redhat.com> | 2010-05-14 09:29:52 -0400 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2010-05-14 09:29:52 -0400 |
| commit | 23e117fa44429cc054cb27d5621d64e4ced91e52 (patch) | |
| tree | a4b9d0902b9c6f009b2c297515221c1b9bed3af8 /drivers/gpio/pca953x.c | |
| parent | 668eb65f092902eb7dd526af73d4a7f025a94612 (diff) | |
| parent | a93d2f1744206827ccf416e2cdc5018aa503314e (diff) | |
| download | talos-obmc-linux-23e117fa44429cc054cb27d5621d64e4ced91e52.tar.gz talos-obmc-linux-23e117fa44429cc054cb27d5621d64e4ced91e52.zip | |
Merge branch 'sched/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into trace/tip/tracing/core-4
Diffstat (limited to 'drivers/gpio/pca953x.c')
| -rw-r--r-- | drivers/gpio/pca953x.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c index 7d521e1d17e1..b827c976dc62 100644 --- a/drivers/gpio/pca953x.c +++ b/drivers/gpio/pca953x.c @@ -252,6 +252,18 @@ static void pca953x_irq_bus_lock(unsigned int irq) static void pca953x_irq_bus_sync_unlock(unsigned int irq) { struct pca953x_chip *chip = get_irq_chip_data(irq); + uint16_t new_irqs; + uint16_t level; + + /* Look for any newly setup interrupt */ + new_irqs = chip->irq_trig_fall | chip->irq_trig_raise; + new_irqs &= ~chip->reg_direction; + + while (new_irqs) { + level = __ffs(new_irqs); + pca953x_gpio_direction_input(&chip->gpio_chip, level); + new_irqs &= ~(1 << level); + } mutex_unlock(&chip->irq_lock); } @@ -278,7 +290,7 @@ static int pca953x_irq_set_type(unsigned int irq, unsigned int type) else chip->irq_trig_raise &= ~mask; - return pca953x_gpio_direction_input(&chip->gpio_chip, level); + return 0; } static struct irq_chip pca953x_irq_chip = { |
