diff options
author | Eric Engestrom <eric@engestrom.ch> | 2016-11-12 01:12:56 +0000 |
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committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-11-12 14:19:38 +0100 |
commit | b3c11ac267d461d3d597967164ff7278a919a39f (patch) | |
tree | b493960fb72de73ef4a7b202bd0bc96b11340f2a /drivers/gpu/drm/hisilicon | |
parent | f92e1ee52ae2e5ef4249b12a5659dc2b011857c3 (diff) | |
download | linux-b3c11ac267d461d3d597967164ff7278a919a39f.tar.bz2 |
drm: move allocation out of drm_get_format_name()
The function's behaviour was changed in 90844f00049e, without changing
its signature, causing people to keep using it the old way without
realising they were now leaking memory.
Rob Clark also noticed it was also allocating GFP_KERNEL memory in
atomic contexts, breaking them.
Instead of having to allocate GFP_ATOMIC memory and fixing the callers
to make them cleanup the memory afterwards, let's change the function's
signature by having the caller take care of the memory and passing it to
the function.
The new parameter is a single-field struct in order to enforce the size
of its buffer and help callers to correctly manage their memory.
Fixes: 90844f00049e ("drm: make drm_get_format_name thread-safe")
Cc: Rob Clark <robdclark@gmail.com>
Cc: Christian König <christian.koenig@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Sinclair Yeh <syeh@vmware.com> (vmwgfx)
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161112011309.9799-1-eric@engestrom.ch
Diffstat (limited to 'drivers/gpu/drm/hisilicon')
-rw-r--r-- | drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c index 7e7a4d43d6b6..afc2b5d2d5f0 100644 --- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c +++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c @@ -608,17 +608,16 @@ static void ade_rdma_set(void __iomem *base, struct drm_framebuffer *fb, u32 ch, u32 y, u32 in_h, u32 fmt) { struct drm_gem_cma_object *obj = drm_fb_cma_get_gem_obj(fb, 0); - char *format_name; + struct drm_format_name_buf format_name; u32 reg_ctrl, reg_addr, reg_size, reg_stride, reg_space, reg_en; u32 stride = fb->pitches[0]; u32 addr = (u32)obj->paddr + y * stride; DRM_DEBUG_DRIVER("rdma%d: (y=%d, height=%d), stride=%d, paddr=0x%x\n", ch + 1, y, in_h, stride, (u32)obj->paddr); - format_name = drm_get_format_name(fb->pixel_format); DRM_DEBUG_DRIVER("addr=0x%x, fb:%dx%d, pixel_format=%d(%s)\n", - addr, fb->width, fb->height, fmt, format_name); - kfree(format_name); + addr, fb->width, fb->height, fmt, + drm_get_format_name(fb->pixel_format, &format_name)); /* get reg offset */ reg_ctrl = RD_CH_CTRL(ch); |