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Acked-by: Slava Abramov <slava.abramov@xxxxxxx> From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> on behalf of Colin King <colin.king@xxxxxxxxxxxxx>
Sent: Friday, June 28, 2019 10:08:01 AM To: Zhang, Hawking; Deucher, Alexander; Koenig, Christian; Zhou, David(ChunMing); David Airlie; Daniel Vetter; amd-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx Cc: kernel-janitors@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx Subject: [PATCH][next] drm/amdgpu: fix off-by-one comparison on a WARN_ON message From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
The WARN_ON is currently throwing a warning when i is 65 or higher which is off by one. It should be 64 or higher (64 queues from 0..63 inclusive), so fix this off-by-one comparison. Fixes: 849aca9f9c03 ("drm/amdgpu: Move common code to amdgpu_gfx.c") Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx> --- drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c index 74066e1466f7..c8d106c59e27 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c @@ -501,7 +501,7 @@ int amdgpu_gfx_enable_kcq(struct amdgpu_device *adev) /* This situation may be hit in the future if a new HW * generation exposes more than 64 queues. If so, the * definition of queue_mask needs updating */ - if (WARN_ON(i > (sizeof(queue_mask)*8))) { + if (WARN_ON(i >= (sizeof(queue_mask)*8))) { DRM_ERROR("Invalid KCQ enabled: %d\n", i); break; } -- 2.20.1 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx |
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