5.15-stable review patch. If anyone has any objections, please let me know.
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From: Ma Ke make24@iscas.ac.cn
[ 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@iscas.ac.cn Reviewed-by: Roger Quadros rogerq@kernel.org Link: https://lore.kernel.org/r/20240702032042.3993031-1-make24@iscas.ac.cn Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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);