diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-06-21 15:13:14 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2019-06-21 15:13:14 +0200 |
| commit | 813e34adeefbd4a8ee0d3003db79f1a3b97dfe17 (patch) | |
| tree | 086c615727374eeb89fa4e59cf7e4f1b43dff55f /drivers/video | |
| parent | 56fc5f48200fc432d80a9cffe1b2fe5fe7680f36 (diff) | |
| download | linux-813e34adeefbd4a8ee0d3003db79f1a3b97dfe17.tar.bz2 | |
jz4740_fb: fix DMA API abuse
Virtual addresses return from dma(m)_alloc_coherent are opaque in what
backs then, and drivers must not poke into them.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
[b.zolnierkie: patch description fixup]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/fbdev/jz4740_fb.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/video/fbdev/jz4740_fb.c b/drivers/video/fbdev/jz4740_fb.c index 145095655cc2..1f78b2bfe566 100644 --- a/drivers/video/fbdev/jz4740_fb.c +++ b/drivers/video/fbdev/jz4740_fb.c @@ -457,7 +457,6 @@ 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) { @@ -482,12 +481,6 @@ 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; |