From 4f0c7cfbb4d25aad44137b6531365d29d3080349 Mon Sep 17 00:00:00 2001 From: Ben Widawsky Date: Mon, 16 Apr 2012 14:07:47 -0700 Subject: [PATCH] drm/i915: [sparse] __iomem fixes for gem As with one of the earlier patches in the series, we're forced to cast for copy_[to|from]_user. Again because of the nature of the GEN x86 exclusivity, this should be safe. Signed-off-by: Ben Widawsky [danvet: Added some bikeshed.] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_gem.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 7bc4a40132ad..9e9ea759e496 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -282,8 +282,8 @@ __copy_to_user_swizzled(char __user *cpu_vaddr, } static inline int -__copy_from_user_swizzled(char __user *gpu_vaddr, int gpu_offset, - const char *cpu_vaddr, +__copy_from_user_swizzled(char *gpu_vaddr, int gpu_offset, + const char __user *cpu_vaddr, int length) { int ret, cpu_offset = 0; @@ -558,11 +558,14 @@ fast_user_write(struct io_mapping *mapping, char __user *user_data, int length) { - char *vaddr_atomic; + void __iomem *vaddr_atomic; + void *vaddr; unsigned long unwritten; vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base); - unwritten = __copy_from_user_inatomic_nocache(vaddr_atomic + page_offset, + /* We can use the cpu mem copy function because this is X86. */ + vaddr = (void __force*)vaddr_atomic + page_offset; + unwritten = __copy_from_user_inatomic_nocache(vaddr, user_data, length); io_mapping_unmap_atomic(vaddr_atomic); return unwritten; -- 2.34.1