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authorSrinivas Kandagatla <srinivas.kandagatla@linaro.org>2021-04-01 10:15:02 +0100
committerVinod Koul <vkoul@kernel.org>2021-04-06 10:25:26 +0530
commite729e0fdc63d8f22cbce61159cee88c04e42b3e2 (patch)
tree789c5da2bd53b8321d5b8d35a51b13d9a6d3fbfc /drivers
parent9916c02ccd74e672b62dd1a9017ac2f237ebf512 (diff)
soundwire: qcom: handle return correctly in qcom_swrm_transport_params
Looks like return from reg_write is set but not checked. Fix this by adding error return path. Reported-by: coverity-bot <keescook+coverity-bot@chromium.org> Addresses-Coverity-ID: 1503591 ("UNUSED_VALUE") Fixes: 128eaf937adb ("soundwire: qcom: add support to missing transport params") Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210401091502.15825-1-srinivas.kandagatla@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/soundwire/qcom.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index 892027e6df5f..2827085a323b 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -731,17 +731,23 @@ static int qcom_swrm_transport_params(struct sdw_bus *bus,
value |= pcfg->si;
ret = ctrl->reg_write(ctrl, reg, value);
+ if (ret)
+ goto err;
if (pcfg->lane_control != SWR_INVALID_PARAM) {
reg = SWRM_DP_PORT_CTRL_2_BANK(params->port_num, bank);
value = pcfg->lane_control;
ret = ctrl->reg_write(ctrl, reg, value);
+ if (ret)
+ goto err;
}
if (pcfg->blk_group_count != SWR_INVALID_PARAM) {
reg = SWRM_DP_BLOCK_CTRL2_BANK(params->port_num, bank);
value = pcfg->blk_group_count;
ret = ctrl->reg_write(ctrl, reg, value);
+ if (ret)
+ goto err;
}
if (pcfg->hstart != SWR_INVALID_PARAM
@@ -755,11 +761,15 @@ static int qcom_swrm_transport_params(struct sdw_bus *bus,
ret = ctrl->reg_write(ctrl, reg, value);
}
+ if (ret)
+ goto err;
+
if (pcfg->bp_mode != SWR_INVALID_PARAM) {
reg = SWRM_DP_BLOCK_CTRL3_BANK(params->port_num, bank);
ret = ctrl->reg_write(ctrl, reg, pcfg->bp_mode);
}
+err:
return ret;
}