We will ignored PSR setting if panel not support it. So, in this case, we should return from analogix_dp_enable/disable_psr() without any error code. Let's retrun 0 instead of -EINVAL when panel not support PSR in analogix_dp_enable/disable_psr(). Signed-off-by: zain wang <wzz@xxxxxxxxxxxxxx> --- drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index 6e0447f..0cb3695 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -112,7 +112,7 @@ int analogix_dp_enable_psr(struct device *dev) struct edp_vsc_psr psr_vsc; if (!dp->psr_support) - return -EINVAL; + return 0; /* Prepare VSC packet as per EDP 1.4 spec, Table 6.9 */ memset(&psr_vsc, 0, sizeof(psr_vsc)); @@ -135,7 +135,7 @@ int analogix_dp_disable_psr(struct device *dev) struct edp_vsc_psr psr_vsc; if (!dp->psr_support) - return -EINVAL; + return 0; /* Prepare VSC packet as per EDP 1.4 spec, Table 6.9 */ memset(&psr_vsc, 0, sizeof(psr_vsc)); @@ -878,6 +878,8 @@ static void analogix_dp_commit(struct analogix_dp_device *dp) dp->psr_support = analogix_dp_detect_sink_psr(dp); if (dp->psr_support) analogix_dp_enable_sink_psr(dp); + else + dev_warn(dp->dev, "Sink not support PSR\n"); } /* -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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