[AMD Official Use Only - General]

Reviewed-by: Anthony Koo <[email protected]>

Looks good, my mistake for not noticing this!

Thanks,
Anthony

-----Original Message-----
From: Dan Carpenter <[email protected]>
Sent: Friday, February 9, 2024 8:03 AM
To: SHANMUGAM, SRINIVASAN <[email protected]>
Cc: Wentland, Harry <[email protected]>; Li, Sun peng (Leo) 
<[email protected]>; Siqueira, Rodrigo <[email protected]>; Deucher, 
Alexander <[email protected]>; Koenig, Christian 
<[email protected]>; Pan, Xinhui <[email protected]>; David Airlie 
<[email protected]>; Daniel Vetter <[email protected]>; Kazlauskas, Nicholas 
<[email protected]>; Koo, Anthony <[email protected]>; Pavic, Josip 
<[email protected]>; Huang, Leon <[email protected]>; Adhuri, Mounika 
<[email protected]>; Huang, Lewis <[email protected]>; 
[email protected]; [email protected]; 
[email protected]; [email protected]
Subject: [PATCH] drm/amd/display: Fix && vs || typos

These ANDs should be ORs or it will lead to a NULL dereference.

Fixes: fb5a3d037082 ("drm/amd/display: Add NULL test for 'timing generator' in 
'dcn21_set_pipe()'")
Fixes: 886571d217d7 ("drm/amd/display: Fix 'panel_cntl' could be null in 
'dcn21_set_backlight_level()'")
Signed-off-by: Dan Carpenter <[email protected]>
---
 drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c 
b/drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c
index 5c7f380a84f9..7252f5f781f0 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn21/dcn21_hwseq.c
@@ -211,7 +211,7 @@ void dcn21_set_pipe(struct pipe_ctx *pipe_ctx)
        struct dmcu *dmcu = pipe_ctx->stream->ctx->dc->res_pool->dmcu;
        uint32_t otg_inst;

-       if (!abm && !tg && !panel_cntl)
+       if (!abm || !tg || !panel_cntl)
                return;

        otg_inst = tg->inst;
@@ -245,7 +245,7 @@ bool dcn21_set_backlight_level(struct pipe_ctx *pipe_ctx,
        struct panel_cntl *panel_cntl = pipe_ctx->stream->link->panel_cntl;
        uint32_t otg_inst;

-       if (!abm && !tg && !panel_cntl)
+       if (!abm || !tg || !panel_cntl)
                return false;

        otg_inst = tg->inst;
--
2.43.0

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