From: Jiasheng Jiang jiasheng@iscas.ac.cn
[ 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 --- drivers/net/wireless/ray_cs.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/net/wireless/ray_cs.c b/drivers/net/wireless/ray_cs.c index 2987ad9271f6..87e98ab068ed 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);