From 1543c96e154d6801cf725c3b511d61604a378e03 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 10 Dec 2013 12:38:26 -0500 Subject: radeon: avoid possible divide by 0 in surface manager MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Some users report hitting a divide by 0 with the tile split in certain apps. Tile_split shouldn't ever be 0 unless the surface structure was not properly initialized. I think there may be some cases where mesa uses an improperly initialized surface struct, but I haven't had time to track it down. Bug: https://bugs.freedesktop.org/show_bug.cgi?id=72425 Signed-off-by: Alex Deucher Reviewed-by: Marek Olšák --- radeon/radeon_surface.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'radeon') diff --git a/radeon/radeon_surface.c b/radeon/radeon_surface.c index dcbbfdc5..15127d4d 100644 --- a/radeon/radeon_surface.c +++ b/radeon/radeon_surface.c @@ -655,7 +655,7 @@ static int eg_surface_init_2d(struct radeon_surface_manager *surf_man, tileb = tilew * tileh * bpe * surf->nsamples; /* slices per tile */ slice_pt = 1; - if (tileb > tile_split) { + if (tileb > tile_split && tile_split) { slice_pt = tileb / tile_split; } tileb = tileb / slice_pt; @@ -1621,7 +1621,7 @@ static int si_surface_init_2d(struct radeon_surface_manager *surf_man, tileb = tilew * tileh * bpe * surf->nsamples; /* slices per tile */ slice_pt = 1; - if (tileb > tile_split) { + if (tileb > tile_split && tile_split) { slice_pt = tileb / tile_split; } tileb = tileb / slice_pt; @@ -2223,7 +2223,7 @@ static int cik_surface_init_2d(struct radeon_surface_manager *surf_man, /* slices per tile */ slice_pt = 1; - if (tileb > tile_split) { + if (tileb > tile_split && tile_split) { slice_pt = tileb / tile_split; tileb = tileb / slice_pt; } -- cgit v1.2.3