tree ca4090c961c6ca51cb420e6a21b857e77efc515e
parent b8049438969ba6e429a0aa3d1e3347a49b553295
author Pali Rohár <pali@kernel.org> 1599057823 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1604231143 +0100

phy: marvell: comphy: Convert internal SMCC firmware return codes to errno

commit ea17a0f153af2cd890e4ce517130dcccaa428c13 upstream.

Driver ->power_on and ->power_off callbacks leaks internal SMCC firmware
return codes to phy caller. This patch converts SMCC error codes to
standard linux errno codes. Include file linux/arm-smccc.h already provides
defines for SMCC error codes, so use them instead of custom driver defines.
Note that return value is signed 32bit, but stored in unsigned long type
with zero padding.

Tested-by: Tomasz Maciej Nowak <tmn505@gmail.com>
Link: https://lore.kernel.org/r/20200902144344.16684-2-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>