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Subject[PATCH] drm/i915: Uninitialized variable in i915_gem_object_map_page()
The "i" iterator is never set to zero.  This probably doesn't affect
testing because GCC sometimes initializes variables and also we have a
new pluggin to initialize stack variables to zero.

Fixes: 7edd32a9e614 ("drm/i915: use vmap in i915_gem_object_map")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
Hi Andrew, this should probably go through the -mm tree and get folded
into the original patch.

drivers/gpu/drm/i915/gem/i915_gem_pages.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pages.c b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
index 90029ea83aed..12bedabc1daa 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_pages.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
@@ -266,6 +266,7 @@ static void *i915_gem_object_map_page(struct drm_i915_gem_object *obj,
return NULL;
}

+ i = 0;
for_each_sgt_page(page, iter, obj->mm.pages)
pages[i++] = page;
vaddr = vmap(pages, n_pages, 0, pgprot);
@@ -291,6 +292,7 @@ static void *i915_gem_object_map_pfn(struct drm_i915_gem_object *obj)
return NULL;
}

+ i = 0;
for_each_sgt_daddr(addr, iter, obj->mm.pages)
pfns[i++] = (iomap + addr) >> PAGE_SHIFT;
vaddr = vmap_pfn(pfns, n_pfn, pgprot_writecombine(PAGE_KERNEL_IO));
--
2.28.0
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