From 8be32597283c9db90c662ba7b55d79ceb8a4e392 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Wed, 24 Apr 2019 13:09:34 -0500 Subject: [PATCH] platform/x86: sony-laptop: Fix unintentional fall-through commit 1cbd7a64959d33e7a2a1fa2bf36a62b350a9fcbd upstream. It seems that the default case should return AE_CTRL_TERMINATE, instead of falling through to case ACPI_RESOURCE_TYPE_END_TAG and returning AE_OK; otherwise the line of code at the end of the function is unreachable and makes no sense: return AE_CTRL_TERMINATE; This fix is based on the following thread of discussion: https://lore.kernel.org/patchwork/patch/959782/ Fixes: 33a04454527e ("sony-laptop: Add SNY6001 device handling (sonypi reimplementation)") Cc: stable@vger.kernel.org Signed-off-by: Gustavo A. R. Silva Reviewed-by: Kees Cook Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- drivers/platform/x86/sony-laptop.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index a16cea2be9c3..8fcbe2a62273 100644 --- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -4422,14 +4422,16 @@ sony_pic_read_possible_resource(struct acpi_resource *resource, void *context) } return AE_OK; } - default: - dprintk("Resource %d isn't an IRQ nor an IO port\n", - resource->type); case ACPI_RESOURCE_TYPE_END_TAG: return AE_OK; + + default: + dprintk("Resource %d isn't an IRQ nor an IO port\n", + resource->type); + return AE_CTRL_TERMINATE; + } - return AE_CTRL_TERMINATE; } static int sony_pic_possible_resources(struct acpi_device *device)