[igt-dev] [PATCH i-g-t v1] lib/igt_fb: Remove unused variable buf.

[Stanislav Lisovskiy]

Despite the comment temporary buf is not
used anywhere in convert_nv12_to_rgb24,
so it has to be either removed or used instead
of cvt->src.ptr.
Currently removing it as other functions seem
not to use it either, to make the code more consistent.

Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy at intel.com>
---
 lib/igt_fb.c | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/lib/igt_fb.c b/lib/igt_fb.c
index 4700b152..d92769a9 100644
--- a/lib/igt_fb.c
+++ b/lib/igt_fb.c
@@ -1528,16 +1528,9 @@ static void convert_nv12_to_rgb24(struct fb_convert *cvt)
 	uint8_t *rgb24 = cvt->dst.ptr;
 	unsigned int rgb24_stride = cvt->dst.fb->strides[0];
 	unsigned int planar_stride = cvt->src.fb->strides[0];
-	uint8_t *buf = malloc(cvt->src.fb->size);
 	struct igt_mat4 m = igt_ycbcr_to_rgb_matrix(cvt->src.fb->color_encoding,
 						    cvt->src.fb->color_range);
 
-	/*
-	 * Reading from the BO is awfully slow because of lack of read caching,
-	 * it's faster to copy the whole BO to a temporary buffer and convert
-	 * from there.
-	 */
-	igt_memcpy_from_wc(buf, cvt->src.ptr, cvt->src.fb->size);
 	y = cvt->src.ptr + cvt->src.fb->offsets[0];
 	uv = cvt->src.ptr + cvt->src.fb->offsets[1];
 
@@ -1626,8 +1619,6 @@ static void convert_nv12_to_rgb24(struct fb_convert *cvt)
 			write_rgb(&rgb24[j * 8 + 0], &rgb);
 		}
 	}
-
-	free(buf);
 }
 
 static void convert_yuv444_to_rgb24(struct fb_convert *cvt)
-- 
2.17.1