From: Dejin Zheng <zhengdej...@gmail.com>
[ 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.shevche...@gmail.com>
Cc: Sudip Mukherjee <sudipm.mukher...@gmail.com>
Cc: Teddy Wang <teddy.w...@siliconmotion.com>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Signed-off-by: Dejin Zheng <zhengdej...@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnier...@samsung.com>
Link:
https://patchwork.freedesktop.org/patch/msgid/20200422160719.27763-1-zhengdej...@gmail.com
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/video/fbdev/sm712fb.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/video/fbdev/sm712fb.c b/drivers/video/fbdev/sm712fb.c
index 6a1b4a853d9ee..8cd655d6d6280 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;
}
--
2.25.1
