From: Chris Wilson Date: Wed, 12 Feb 2020 08:54:32 +0000 (+0000) Subject: drm/i915/selftests: Avoid choosing zero for phys_sz X-Git-Tag: baikal/mips/sdk5.9~13997^2~18^2~88 X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=37914abcf4baf3222e0536c4c8fe714b5867a63c;p=kernel.git drm/i915/selftests: Avoid choosing zero for phys_sz Make sure we avoid ending up with a phys_sz of 0, or for phys_sz to be larger than the actual size. Closes: https://patchwork.freedesktop.org/series/73320/ Signed-off-by: Chris Wilson Cc: Matthew Auld Reviewed-by: Matthew Auld Link: https://patchwork.freedesktop.org/patch/msgid/20200212085432.1250807-1-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c index f29da4560dc05..31549ad83fa6a 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c @@ -247,10 +247,11 @@ static int igt_fill_blt_thread(void *arg) total = min(total, max); sz = i915_prandom_u32_max_state(total, prng) + 1; - phys_sz = sz % max_phys_size; + phys_sz = sz % max_phys_size + 1; sz = round_up(sz, PAGE_SIZE); phys_sz = round_up(phys_sz, PAGE_SIZE); + phys_sz = min(phys_sz, sz); pr_debug("%s with phys_sz= %x, sz=%x, val=%x\n", __func__, phys_sz, sz, val); @@ -364,10 +365,11 @@ static int igt_copy_blt_thread(void *arg) total = min(total, max); sz = i915_prandom_u32_max_state(total, prng) + 1; - phys_sz = sz % max_phys_size; + phys_sz = sz % max_phys_size + 1; sz = round_up(sz, PAGE_SIZE); phys_sz = round_up(phys_sz, PAGE_SIZE); + phys_sz = min(phys_sz, sz); pr_debug("%s with phys_sz= %x, sz=%x, val=%x\n", __func__, phys_sz, sz, val);