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ENGR00125353 GPU: use writecombine for mmap

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Change pgprot_noncached to pgprot_writecombine in gsl_kmod_mmap to
improve performance

Signed-off-by: Thomas Peng <r80085@freescale.com>
Signed-off-by: Jie Zhou <b30303@freescale.com>
(cherry picked from commit 847baca41bceed49e397eaba8b1b3b00e86e20a3)
This commit is contained in:
Jie Zhou
2010-07-21 09:31:05 +08:00
committed by Matt Sealey
parent 88aa8e382a
commit 4cd2daf53c
1 changed files with 1 additions and 1 deletions
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2
drivers/mxc/amd-gpu/platform/hal/linux/gsl_kmod.c
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@@ -633,7 +633,7 @@ static int gsl_kmod_mmap(struct file *fd, struct vm_area_struct *vma)
unsigned long start = vma->vm_start;
unsigned long pfn = vma->vm_pgoff;
unsigned long size = vma->vm_end - vma->vm_start;
unsigned long prot = pgprot_noncached(vma->vm_page_prot);
unsigned long prot = pgprot_writecombine(vma->vm_page_prot);
#ifdef GSL_MMU_TRANSLATION_ENABLED
unsigned long addr = vma->vm_pgoff << PAGE_SHIFT;
void *va;