3.16.74-rc1 review patch. If anyone has any objections, please let me know.
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From: "Gustavo A. R. Silva" gustavo@embeddedor.com
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)") Signed-off-by: Gustavo A. R. Silva gustavo@embeddedor.com Reviewed-by: Kees Cook keescook@chromium.org Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Signed-off-by: Ben Hutchings ben@decadent.org.uk --- drivers/platform/x86/sony-laptop.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
--- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -4401,14 +4401,16 @@ sony_pic_read_possible_resource(struct a } return AE_OK; } + + 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;
- case ACPI_RESOURCE_TYPE_END_TAG: - return AE_OK; } - return AE_CTRL_TERMINATE; }
static int sony_pic_possible_resources(struct acpi_device *device)