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authorMathias Fröhlich <Mathias.Froehlich@gmx.net>2009-11-03 11:41:26 -0500
committerAlex Deucher <alexdeucher@gmail.com>2009-11-03 11:41:26 -0500
commit6eafd1cf386d93bb9e34660227ca6f26aadfeb32 (patch)
tree2cbd0093758ec8fdbc43d88832aabfbd0345c083 /libdrm/radeon
parentb0b96636dbf93445dd532b09b21fa4fc5ce6bdc7 (diff)
radeon: fix allocation
The old code increments the command stream size by another kbyte, but does not make sure that the requested packet size fits into the stream. The patch ensures that the whole next packet fits there and rounds the allocated size to a power of two. Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Diffstat (limited to 'libdrm/radeon')
-rw-r--r--libdrm/radeon/radeon_cs_gem.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/libdrm/radeon/radeon_cs_gem.c b/libdrm/radeon/radeon_cs_gem.c
index e42ec48f..232ea7f3 100644
--- a/libdrm/radeon/radeon_cs_gem.c
+++ b/libdrm/radeon/radeon_cs_gem.c
@@ -226,7 +226,8 @@ static int cs_gem_begin(struct radeon_cs *cs,
if (cs->cdw + ndw > cs->ndw) {
uint32_t tmp, *ptr;
- tmp = (cs->ndw + 1 + 0x3FF) & (~0x3FF);
+ /* round up the required size to a multiple of 1024 */
+ tmp = (cs->cdw + ndw + 0x3FF) & (~0x3FF);
ptr = (uint32_t*)realloc(cs->packets, 4 * tmp);
if (ptr == NULL) {
return -ENOMEM;