5.4-stable review patch. If anyone has any objections, please let me know.
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From: Armin Wolf W_Armin@gmx.de
[ Upstream commit c4bd7f1d78340e63de4d073fd3dbe5391e2996e5 ]
If an error code other than EINVAL, ENODEV or ETIME is returned by acpi_ec_read() / acpi_ec_write(), then AE_OK is incorrectly returned by acpi_ec_space_handler().
Fix this by only returning AE_OK on success, and return AE_ERROR otherwise.
Signed-off-by: Armin Wolf W_Armin@gmx.de [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/acpi/ec.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 43a8941b6743d..142578451e381 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -1328,8 +1328,10 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address, return AE_NOT_FOUND; case -ETIME: return AE_TIME; - default: + case 0: return AE_OK; + default: + return AE_ERROR; } }