Virtual addresses return from dma(m)_alloc_coherent are opaque in what
backs then, and drivers must not poke into them. Switch the driver
to use the generic DMA API mmap helper to avoid these problems.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
drivers/video/fbdev/jz4740_fb.c | 7 -------
1 file changed, 7 deletions(-)
diff --git a/drivers/video/fbdev/jz4740_fb.c b/drivers/video/fbdev/jz4740_fb.c
index b57df83fdbd3..b95cdfa9e0a1 100644
--- a/drivers/video/fbdev/jz4740_fb.c
+++ b/drivers/video/fbdev/jz4740_fb.c
@@ -466,7 +466,6 @@ static int jzfb_alloc_devmem(struct jzfb *jzfb)
{
int max_videosize = 0;
struct fb_videomode *mode = jzfb->pdata->modes;
- void *page;
int i;
for (i = 0; i < jzfb->pdata->num_modes; ++mode, ++i) {
@@ -491,12 +490,6 @@ static int jzfb_alloc_devmem(struct jzfb *jzfb)
if (!jzfb->vidmem)
goto err_free_framedesc;
- for (page = jzfb->vidmem;
- page < jzfb->vidmem + PAGE_ALIGN(jzfb->vidmem_size);
- page += PAGE_SIZE) {
- SetPageReserved(virt_to_page(page));
- }
-
jzfb->framedesc->next = jzfb->framedesc_phys;
jzfb->framedesc->addr = jzfb->vidmem_phys;
jzfb->framedesc->id = 0xdeafbead;
--
2.20.1
