6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Tomi Valkeinen tomi.valkeinen@ideasonboard.com
[ Upstream commit aceafbb5035c4bfc75a321863ed1e393d644d2d2 ]
Return an error value from dispc_softreset() so that the caller can handle the errors.
Reviewed-by: Aradhya Bhatia a-bhatia1@ti.com Link: https://lore.kernel.org/r/20231109-tidss-probe-v2-5-ac91b5ea35c0@ideasonboar... Signed-off-by: Tomi Valkeinen tomi.valkeinen@ideasonboard.com Stable-dep-of: bc288a927815 ("drm/tidss: Fix dss reset") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/tidss/tidss_dispc.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/tidss/tidss_dispc.c b/drivers/gpu/drm/tidss/tidss_dispc.c index 8d822372bf94..9a29f5fa8453 100644 --- a/drivers/gpu/drm/tidss/tidss_dispc.c +++ b/drivers/gpu/drm/tidss/tidss_dispc.c @@ -2702,7 +2702,7 @@ static void dispc_init_errata(struct dispc_device *dispc) } }
-static void dispc_softreset(struct dispc_device *dispc) +static int dispc_softreset(struct dispc_device *dispc) { u32 val; int ret = 0; @@ -2712,8 +2712,12 @@ static void dispc_softreset(struct dispc_device *dispc) /* Wait for reset to complete */ ret = readl_poll_timeout(dispc->base_common + DSS_SYSSTATUS, val, val & 1, 100, 5000); - if (ret) - dev_warn(dispc->dev, "failed to reset dispc\n"); + if (ret) { + dev_err(dispc->dev, "failed to reset dispc\n"); + return ret; + } + + return 0; }
int dispc_init(struct tidss_device *tidss) @@ -2826,8 +2830,11 @@ int dispc_init(struct tidss_device *tidss) &dispc->memory_bandwidth_limit);
/* K2G display controller does not support soft reset */ - if (feat->subrev != DISPC_K2G) - dispc_softreset(dispc); + if (feat->subrev != DISPC_K2G) { + r = dispc_softreset(dispc); + if (r) + return r; + }
tidss->dispc = dispc;