This is a note to let you know that I've just added the patch titled
pinctrl: amd: Fix mistake in handling clearing pins at startup
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pinctrl-amd-fix-mistake-in-handling-clearing-pins-at-startup.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a855724dc08b8cb0c13ab1e065a4922f1e5a7552 Mon Sep 17 00:00:00 2001
From: Mario Limonciello <mario.limonciello@xxxxxxx>
Date: Fri, 21 Apr 2023 07:06:22 -0500
Subject: pinctrl: amd: Fix mistake in handling clearing pins at startup
From: Mario Limonciello <mario.limonciello@xxxxxxx>
commit a855724dc08b8cb0c13ab1e065a4922f1e5a7552 upstream.
commit 4e5a04be88fe ("pinctrl: amd: disable and mask interrupts on probe")
had a mistake in loop iteration 63 that it would clear offset 0xFC instead
of 0x100. Offset 0xFC is actually `WAKE_INT_MASTER_REG`. This was
clearing bits 13 and 15 from the register which significantly changed the
expected handling for some platforms for GPIO0.
Cc: stable@xxxxxxxxxxxxxxx
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217315
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Link: https://lore.kernel.org/r/20230421120625.3366-3-mario.limonciello@xxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pinctrl/pinctrl-amd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/pinctrl/pinctrl-amd.c
+++ b/drivers/pinctrl/pinctrl-amd.c
@@ -883,9 +883,9 @@ static void amd_gpio_irq_init(struct amd
raw_spin_lock_irqsave(&gpio_dev->lock, flags);
- pin_reg = readl(gpio_dev->base + i * 4);
+ pin_reg = readl(gpio_dev->base + pin * 4);
pin_reg &= ~mask;
- writel(pin_reg, gpio_dev->base + i * 4);
+ writel(pin_reg, gpio_dev->base + pin * 4);
raw_spin_unlock_irqrestore(&gpio_dev->lock, flags);
}
Patches currently in stable-queue which might be from mario.limonciello@xxxxxxx are
queue-5.15/pinctrl-amd-detect-internal-gpio0-debounce-handling.patch
queue-5.15/pinctrl-amd-only-use-special-debounce-behavior-for-gpio-0.patch
queue-5.15/pinctrl-amd-detect-and-mask-spurious-interrupts.patch
queue-5.15/pinctrl-amd-fix-mistake-in-handling-clearing-pins-at-startup.patch
