diff mbox series

gpio: davinci: fix lazy disable

Message ID 20240828133207.493961-1-parth105105@gmail.com
State New
Headers show
Series gpio: davinci: fix lazy disable | expand

Commit Message

Parth Pancholi Aug. 28, 2024, 1:32 p.m. UTC 
From: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>

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@toradex.com>
Signed-off-by: Parth Pancholi <parth.pancholi@toradex.com>
Cc: stable@vger.kernel.org
---
 drivers/gpio/gpio-davinci.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

Comments

Bartosz Golaszewski Sept. 2, 2024, 12:08 p.m. UTC | #1 
On Wed, Aug 28, 2024 at 3:32 PM Parth Pancholi <parth105105@gmail.com> wrote:
>
> From: Emanuele Ghidoli <emanuele.ghidoli@toradex.com>
>
> 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@toradex.com>
> Signed-off-by: Parth Pancholi <parth.pancholi@toradex.com>
> Cc: stable@vger.kernel.org
> ---

It looks good to me but I'd like to have an Ack from Keerthy on this.

Bart
diff mbox series

Patch

diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c
index 1d0175d6350b..0ecfa7de5ce2 100644
--- a/drivers/gpio/gpio-davinci.c
+++ b/drivers/gpio/gpio-davinci.c
@@ -289,7 +289,7 @@  static int davinci_gpio_probe(struct platform_device *pdev)
  * 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);
 	uintptr_t mask = (uintptr_t)irq_data_get_irq_handler_data(d);
@@ -298,7 +298,7 @@  static void gpio_irq_disable(struct irq_data *d)
 	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);
 	uintptr_t mask = (uintptr_t)irq_data_get_irq_handler_data(d);
@@ -324,8 +324,8 @@  static int gpio_irq_type(struct irq_data *d, unsigned trigger)
 
 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,
 };