fbdev: uvesafb: Fixes an error handling path in uvesafb_probe()

[ Upstream commit a94371040712031ba129c7e9d8ff04a06a2f8207 ]

If an error occurs after a successful uvesafb_init_mtrr() call, it must be
undone by a corresponding arch_phys_wc_del() call, as already done in the
remove function.

This has been added in the remove function in commit aa4c8c53c884
("uvesafb: Clean up MTRR code")

Fixes: b44bdaa5f119 ("uvesafb: the driver core")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c
index 439565cae7abb19ab0f0780940b8f1fbfca10f9b..7d3af1d19ad3f95f2d34f7dbe53615f0d24947d1 100644 (file)
--- a/drivers/video/fbdev/uvesafb.c
+++ b/drivers/video/fbdev/uvesafb.c
@@ -1756,6 +1756,7 @@ static int uvesafb_probe(struct platform_device *dev)
 out_unmap:
        iounmap(info->screen_base);
 out_mem:
+       arch_phys_wc_del(par->mtrr_handle);
        release_mem_region(info->fix.smem_start, info->fix.smem_len);
 out_reg:
        release_region(0x3c0, 32);