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drm/msm/adreno: Ensure that the zap shader region is big enough 

Before loading the zap shader we should ensure that the reserved memory
region is big enough to hold the loaded file.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>
This commit is contained in:
Jordan Crouse 2019-05-31 16:09:38 -06:00 committed by Rob Clark
parent 7b8c9e2030
commit 6672e11cad
1 changed files with 7 additions and 1 deletions
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8
drivers/gpu/drm/msm/adreno/adreno_gpu.c
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@ -67,7 +67,6 @@ static int zap_shader_load_mdt(struct msm_gpu *gpu, const char *fwname,
return ret;
mem_phys = r.start;
mem_size = resource_size(&r);
/* Request the MDT file for the firmware */
fw = adreno_request_fw(to_adreno_gpu(gpu), fwname);
@ -83,6 +82,13 @@ static int zap_shader_load_mdt(struct msm_gpu *gpu, const char *fwname,
goto out;
}
if (mem_size > resource_size(&r)) {
DRM_DEV_ERROR(dev,
"memory region is too small to load the MDT\n");
ret = -E2BIG;
goto out;
}
/* Allocate memory for the firmware image */
mem_region = memremap(mem_phys, mem_size, MEMREMAP_WC);
if (!mem_region) {