From: Marek Behún kabel@kernel.org
[ Upstream commit e34e60253d9272311831daed8a2d967cf80ca3dc ]
The status decoding function mox_get_status() currently contains an incorrect check: if the error status is not MBOX_STS_SUCCESS, it always returns -EIO, so the comparison to MBOX_STS_FAIL is never executed and we don't get the actual error code sent by the firmware.
Fix this.
Signed-off-by: Marek Behún kabel@kernel.org Reviewed-by: Pali Rohár pali@kernel.org Reviewed-by: Andrew Lunn andrew@lunn.ch Fixes: 389711b37493 ("firmware: Add Turris Mox rWTM firmware driver") Signed-off-by: Gregory CLEMENT gregory.clement@bootlin.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/firmware/turris-mox-rwtm.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/firmware/turris-mox-rwtm.c b/drivers/firmware/turris-mox-rwtm.c index 50bb2a6d6ccf..54b98642ee1b 100644 --- a/drivers/firmware/turris-mox-rwtm.c +++ b/drivers/firmware/turris-mox-rwtm.c @@ -147,11 +147,14 @@ MOX_ATTR_RO(pubkey, "%s\n", pubkey);
static int mox_get_status(enum mbox_cmd cmd, u32 retval) { - if (MBOX_STS_CMD(retval) != cmd || - MBOX_STS_ERROR(retval) != MBOX_STS_SUCCESS) + if (MBOX_STS_CMD(retval) != cmd) return -EIO; else if (MBOX_STS_ERROR(retval) == MBOX_STS_FAIL) return -(int)MBOX_STS_VALUE(retval); + else if (MBOX_STS_ERROR(retval) == MBOX_STS_BADCMD) + return -ENOSYS; + else if (MBOX_STS_ERROR(retval) != MBOX_STS_SUCCESS) + return -EIO; else return MBOX_STS_VALUE(retval); }