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ray_cs: Check ioremap return value

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[ 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>
This commit is contained in:
Jiasheng Jiang 2021-12-30 10:29:26 +08:00 committed by Greg Kroah-Hartman
parent 5c2a6a8daa
commit fabaa886f1
1 changed files with 6 additions and 0 deletions
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6
drivers/net/wireless/ray_cs.c
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@ -396,6 +396,8 @@ 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 |=
@ -410,6 +412,8 @@ 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 |=
@ -424,6 +428,8 @@ 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);