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authorJiasheng Jiang <jiasheng@iscas.ac.cn>2021-12-30 10:29:26 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-04-15 14:18:11 +0200
commit135eb4e2bed1c6a84cc705055f9f5ea1bb21e669 (patch)
tree5aefed9ff9091b13d4538926b33ff3874b73a46e /drivers/net/wireless
parent3be1bb175f2c0660de67a9213a8ae34e1e91bb72 (diff)
ray_cs: Check ioremap return value
[ Upstream commit 7e4760713391ee46dc913194b33ae234389a174e ] As the possible failure of the ioremap(), the 'local->sram' and other two could be NULL. Therefore it should be better to check it in order to avoid the later dev_dbg. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> Signed-off-by: Kalle Valo <kvalo@kernel.org> Link: https://lore.kernel.org/r/20211230022926.1846757-1-jiasheng@iscas.ac.cn Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/net/wireless')
-rw-r--r--drivers/net/wireless/ray_cs.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/wireless/ray_cs.c b/drivers/net/wireless/ray_cs.c
index cf372684b681..3836d6ac5304 100644
--- a/drivers/net/wireless/ray_cs.c
+++ b/drivers/net/wireless/ray_cs.c
@@ -382,6 +382,8 @@ static int ray_config(struct pcmcia_device *link)
goto failed;
local->sram = ioremap(link->resource[2]->start,
resource_size(link->resource[2]));
+ if (!local->sram)
+ goto failed;
/*** Set up 16k window for shared memory (receive buffer) ***************/
link->resource[3]->flags |=
@@ -396,6 +398,8 @@ static int ray_config(struct pcmcia_device *link)
goto failed;
local->rmem = ioremap(link->resource[3]->start,
resource_size(link->resource[3]));
+ if (!local->rmem)
+ goto failed;
/*** Set up window for attribute memory ***********************************/
link->resource[4]->flags |=
@@ -410,6 +414,8 @@ static int ray_config(struct pcmcia_device *link)
goto failed;
local->amem = ioremap(link->resource[4]->start,
resource_size(link->resource[4]));
+ if (!local->amem)
+ goto failed;
dev_dbg(&link->dev, "ray_config sram=%p\n", local->sram);
dev_dbg(&link->dev, "ray_config rmem=%p\n", local->rmem);