diff options
| author | Dejin Zheng <zhengdejin5@gmail.com> | 2020-04-23 00:07:19 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-19 08:16:06 +0200 |
| commit | e95d33905a4e5f6db211792fe3c68d18c87e027a (patch) | |
| tree | bf83eef3ea34584c4501b7ba97caa8fc728a53d1 /drivers/video | |
| parent | d9e13b0c26cf4ef481c622e861c4236299af96ef (diff) | |
video: fbdev: sm712fb: fix an issue about iounmap for a wrong address
[ Upstream commit 98bd4f72988646c35569e1e838c0ab80d06c77f6 ]
the sfb->fb->screen_base is not save the value get by iounmap() when
the chip id is 0x720. so iounmap() for address sfb->fb->screen_base
is not right.
Fixes: 1461d6672864854 ("staging: sm7xxfb: merge sm712fb with fbdev")
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Teddy Wang <teddy.wang@siliconmotion.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200422160719.27763-1-zhengdejin5@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/fbdev/sm712fb.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/video/fbdev/sm712fb.c b/drivers/video/fbdev/sm712fb.c index 207d0add684b..246681414577 100644 --- a/drivers/video/fbdev/sm712fb.c +++ b/drivers/video/fbdev/sm712fb.c @@ -1429,6 +1429,8 @@ static int smtc_map_smem(struct smtcfb_info *sfb, static void smtc_unmap_smem(struct smtcfb_info *sfb) { if (sfb && sfb->fb->screen_base) { + if (sfb->chip_id == 0x720) + sfb->fb->screen_base -= 0x00200000; iounmap(sfb->fb->screen_base); sfb->fb->screen_base = NULL; } |