From mboxrd@z Thu Jan 1 00:00:00 1970 From: architt@codeaurora.org (Archit Taneja) Date: Wed, 14 Mar 2018 12:03:35 +0530 Subject: [PATCH v5 21/36] drm/bridge: analogix_dp: Fix timeout of video streamclk config In-Reply-To: <20180309222327.18689-22-enric.balletbo@collabora.com> References: <20180309222327.18689-1-enric.balletbo@collabora.com> <20180309222327.18689-22-enric.balletbo@collabora.com> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Saturday 10 March 2018 03:53 AM, Enric Balletbo i Serra wrote: > From: zain wang > > The STRM_VALID bit in register ANALOGIX_DP_SYS_CTL_3 may be unstable, > so we may hit the error log "Timeout of video streamclk ok" since > checked this unstable bit. > In fact, we can go continue and the streamclk is ok if we wait enough time, > it does no effect on display. > Let's change this error to warn. Reviewed-by: Archit Taneja Thanks, Archit > > Cc: Douglas Anderson > Signed-off-by: zain wang > Signed-off-by: Sean Paul > Signed-off-by: Thierry Escande > Reviewed-by: Andrzej Hajda > Signed-off-by: Enric Balletbo i Serra > Tested-by: Marek Szyprowski > --- > > drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 5 +++-- > 1 file changed, 3 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 1f1cb624414d..d76e1652b1fd 100644 > --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c > +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c > @@ -921,8 +921,9 @@ static int analogix_dp_config_video(struct analogix_dp_device *dp) > done_count = 0; > } > if (timeout_loop > DP_TIMEOUT_LOOP_COUNT) { > - dev_err(dp->dev, "Timeout of video streamclk ok\n"); > - return -ETIMEDOUT; > + dev_warn(dp->dev, > + "Ignoring timeout of video streamclk ok\n"); > + break; > } > > usleep_range(1000, 1001); >