5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Ma Ke <make24@xxxxxxxxxxx>
[ Upstream commit 967969cf594ed3c1678a9918d6e9bb2d1591cbe9 ]
cdns_torrent_dp_set_power_state() does not consider that ret might be
overwritten. Add return value check of regmap_read_poll_timeout() after
register read in cdns_torrent_dp_set_power_state().
Fixes: 5b16a790f18d ("phy: cadence-torrent: Reorder few functions to remove function declarations")
Signed-off-by: Ma Ke <make24@xxxxxxxxxxx>
Reviewed-by: Roger Quadros <rogerq@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240702032042.3993031-1-make24@xxxxxxxxxxx
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/phy/cadence/phy-cadence-torrent.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c
index 415ace64adc5c..8f23146d62bf0 100644
--- a/drivers/phy/cadence/phy-cadence-torrent.c
+++ b/drivers/phy/cadence/phy-cadence-torrent.c
@@ -1056,6 +1056,9 @@ static int cdns_torrent_dp_set_power_state(struct cdns_torrent_phy *cdns_phy,
ret = regmap_read_poll_timeout(regmap, PHY_PMA_XCVR_POWER_STATE_ACK,
read_val, (read_val & mask) == value, 0,
POLL_TIMEOUT_US);
+ if (ret)
+ return ret;
+
cdns_torrent_dp_write(regmap, PHY_PMA_XCVR_POWER_STATE_REQ, 0x00000000);
ndelay(100);
--
2.43.0
