diff options
| author | Fuqian Huang <huangfq.daxian@gmail.com> | 2019-07-03 19:27:18 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-07-05 23:54:55 +0300 |
| commit | d12c202289b07037da285299b4122fa2072eca96 (patch) | |
| tree | c158c18f420baa0189ba79d48f704f8b4a9fa5b9 /drivers/gpu/drm/amd/display/dc | |
| parent | a5b1615529ae088200e6990f3776ff019df672b4 (diff) | |
| download | linux-d12c202289b07037da285299b4122fa2072eca96.tar.xz | |
drm/amdgpu: Use kmemdup rather than duplicating its implementation
kmemdup is introduced to duplicate a region of memory in a neat way.
Rather than kmalloc/kzalloc + memcpy, which the programmer needs to
write the size twice (sometimes lead to mistakes), kmemdup improves
readability, leads to smaller code and also reduce the chances of mistakes.
Suggestion to use kmemdup rather than using kmalloc/kzalloc + memcpy.
Reviewed-by: Christian König <Christian.Koenig@amd.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc.c | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 4 |
2 files changed, 3 insertions, 7 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 14c4c60c59db..4ef4dc63e221 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1190,14 +1190,12 @@ struct dc_state *dc_create_state(struct dc *dc) struct dc_state *dc_copy_state(struct dc_state *src_ctx) { int i, j; - struct dc_state *new_ctx = kzalloc(sizeof(struct dc_state), - GFP_KERNEL); + struct dc_state *new_ctx = kmemdup(src_ctx, + sizeof(struct dc_state), GFP_KERNEL); if (!new_ctx) return NULL; - memcpy(new_ctx, src_ctx, sizeof(struct dc_state)); - for (i = 0; i < MAX_PIPES; i++) { struct pipe_ctx *cur_pipe = &new_ctx->res_ctx.pipe_ctx[i]; diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c index a7c769a1b40b..af7f8be230f7 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c @@ -181,12 +181,10 @@ struct dc_stream_state *dc_copy_stream(const struct dc_stream_state *stream) { struct dc_stream_state *new_stream; - new_stream = kzalloc(sizeof(struct dc_stream_state), GFP_KERNEL); + new_stream = kmemdup(stream, sizeof(struct dc_stream_state), GFP_KERNEL); if (!new_stream) return NULL; - memcpy(new_stream, stream, sizeof(struct dc_stream_state)); - if (new_stream->sink) dc_sink_retain(new_stream->sink); |