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rk_fb: sysfs: make use vmap/vunmap in pairs.

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Signed-off-by: Mark Yao <mark.yao@rock-chips.com>
This commit is contained in:
Mark Yao
2014-12-03 15:05:15 +08:00
parent 2855e146a1
commit b8cffb14fc
1 changed files with 10 additions and 2 deletions
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12
drivers/video/rockchip/rkfb_sysfs.c
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@@ -115,7 +115,7 @@ static void fill_buffer(void *handle, void *vaddr, int size)
static int dump_win(struct rk_fb *rk_fb, struct rk_fb_reg_area_data *area_data,
u8 data_format, int win_id, int area_id, bool is_bmp)
{
void __iomem *vaddr;
void __iomem *vaddr = NULL;
struct file *filp;
mm_segment_t old_fs;
char name[100];
@@ -139,7 +139,13 @@ static int dump_win(struct rk_fb *rk_fb, struct rk_fb_reg_area_data *area_data,
start += PAGE_SIZE;
i++;
}
vaddr = vmap(pages, nr_pages, VM_MAP, pgprot_writecombine(PAGE_KERNEL));
vaddr = vmap(pages, nr_pages, VM_MAP,
pgprot_writecombine(PAGE_KERNEL));
if (!vaddr) {
pr_err("failed to vmap phy addr %lx\n",
area_data->smem_start);
return -1;
}
} else {
return -1;
}
@@ -170,6 +176,8 @@ static int dump_win(struct rk_fb *rk_fb, struct rk_fb_reg_area_data *area_data,
ion_unmap_kernel(rk_fb->ion_client, ion_handle);
ion_handle_put(ion_handle);
} else if (vaddr) {
vunmap(vaddr);
}
filp_close(filp, NULL);