4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Emanuele Ghidoli <emanuele.ghidoli@xxxxxxxxxxx>
commit 3360d41f4ac490282fddc3ccc0b58679aa5c065d upstream.
On a few platforms such as TI's AM69 device, disable_irq() fails to keep
track of the interrupts that happen between disable_irq() and
enable_irq() and those interrupts are missed. Use the ->irq_unmask() and
->irq_mask() methods instead of ->irq_enable() and ->irq_disable() to
correctly keep track of edges when disable_irq is called.
This solves the issue of disable_irq() not working as expected on such
platforms.
Fixes: 23265442b02b ("ARM: davinci: irq_data conversion.")
Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli@xxxxxxxxxxx>
Signed-off-by: Parth Pancholi <parth.pancholi@xxxxxxxxxxx>
Acked-by: Keerthy <j-keerthy@xxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20240828133207.493961-1-parth105105@xxxxxxxxx
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpio/gpio-davinci.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/gpio/gpio-davinci.c
+++ b/drivers/gpio/gpio-davinci.c
@@ -294,7 +294,7 @@ err:
* serve as EDMA event triggers.
*/
-static void gpio_irq_disable(struct irq_data *d)
+static void gpio_irq_mask(struct irq_data *d)
{
struct davinci_gpio_regs __iomem *g = irq2regs(d);
u32 mask = (u32) irq_data_get_irq_handler_data(d);
@@ -303,7 +303,7 @@ static void gpio_irq_disable(struct irq_
writel_relaxed(mask, &g->clr_rising);
}
-static void gpio_irq_enable(struct irq_data *d)
+static void gpio_irq_unmask(struct irq_data *d)
{
struct davinci_gpio_regs __iomem *g = irq2regs(d);
u32 mask = (u32) irq_data_get_irq_handler_data(d);
@@ -329,8 +329,8 @@ static int gpio_irq_type(struct irq_data
static struct irq_chip gpio_irqchip = {
.name = "GPIO",
- .irq_enable = gpio_irq_enable,
- .irq_disable = gpio_irq_disable,
+ .irq_unmask = gpio_irq_unmask,
+ .irq_mask = gpio_irq_mask,
.irq_set_type = gpio_irq_type,
.flags = IRQCHIP_SET_TYPE_MASKED | IRQCHIP_SKIP_SET_WAKE,
};
