The patch titled
gpio: Langwell GPIO driver bugfixes
has been removed from the -mm tree. Its filename was
gpio-langwell-gpio-driver-miscellaneous-clean-ups.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: gpio: Langwell GPIO driver bugfixes
From: Alek Du <alek.du@xxxxxxxxx>
- Remove wrong and unnecessary unmask operation
- Remove extra GEDR reading
This fixes the loss of interrupts which occurs when two or more pins are
triggered in close succession.
Signed-off-by: Alek Du <alek.du@xxxxxxxxx>
Cc: David Brownell <david-b@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/gpio/langwell_gpio.c | 11 +----------
1 file changed, 1 insertion(+), 10 deletions(-)
diff -puN drivers/gpio/langwell_gpio.c~gpio-langwell-gpio-driver-miscellaneous-clean-ups drivers/gpio/langwell_gpio.c
--- a/drivers/gpio/langwell_gpio.c~gpio-langwell-gpio-driver-miscellaneous-clean-ups
+++ a/drivers/gpio/langwell_gpio.c
@@ -144,13 +144,6 @@ static int lnw_irq_type(unsigned irq, un
static void lnw_irq_unmask(unsigned irq)
{
- struct lnw_gpio *lnw = get_irq_chip_data(irq);
- u32 gpio = irq - lnw->irq_base;
- u8 reg = gpio / 32;
- void __iomem *gedr;
-
- gedr = (void __iomem *)(&lnw->reg_base->GEDR[reg]);
- writel(BIT(gpio % 32), gedr);
};
static void lnw_irq_mask(unsigned irq)
@@ -183,13 +176,11 @@ static void lnw_irq_handler(unsigned irq
gedr_v = readl(gedr);
if (!gedr_v)
continue;
- for (gpio = reg*32; gpio < reg*32+32; gpio++) {
- gedr_v = readl(gedr);
+ for (gpio = reg*32; gpio < reg*32+32; gpio++)
if (gedr_v & BIT(gpio % 32)) {
pr_debug("pin %d triggered\n", gpio);
generic_handle_irq(lnw->irq_base + gpio);
}
- }
/* clear the edge detect status bit */
writel(gedr_v, gedr);
}
_
Patches currently in -mm which might be from alek.du@xxxxxxxxx are
gpio-fix-test-on-unsigned-in-lnw_irq_type.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
