[PATCH AUTOSEL 5.18 01/10] pinctrl: Don't allow PINCTRL_AMD to be a module

[PATCH AUTOSEL 5.18 01/10] pinctrl: Don't allow PINCTRL_AMD to be a module

[Sasha Levin]

From: Mario Limonciello <mario.limonciello@amd.com>

[ Upstream commit 41ef3c1a6bb0fd4a3f81170dd17de3adbff80783 ]

It was observed that by allowing pinctrl_amd to be loaded
later in the boot process that interrupts sent to the GPIO
controller early in the boot are not serviced.  The kernel treats
these as a spurious IRQ and disables the IRQ.

This problem was exacerbated because it happened on a system with
an encrypted partition so the kernel object was not accesssible for
an extended period of time while waiting for a passphrase.

To avoid this situation from occurring, stop allowing pinctrl-amd
from being built as a module and instead require it to be built-in
or disabled.

Reported-by: madcatx@atlas.cz
Suggested-by: jwrdegoede@fedoraproject.org
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216230
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220713175950.964-1-mario.limonciello@amd.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pinctrl/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index f52960d2dfbe..bff144c97e66 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -32,7 +32,7 @@ config DEBUG_PINCTRL
 	  Say Y here to add some extra checks and diagnostics to PINCTRL calls.
 
 config PINCTRL_AMD
-	tristate "AMD GPIO pin control"
+	bool "AMD GPIO pin control"
 	depends on HAS_IOMEM
 	depends on ACPI || COMPILE_TEST
 	select GPIOLIB
-- 
2.35.1