Patch "ray_cs: Check ioremap return value" has been added to the 5.17-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    ray_cs: Check ioremap return value

to the 5.17-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ray_cs-check-ioremap-return-value.patch
and it can be found in the queue-5.17 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 1bbc8c6d5cdf42b0dd8029d2e165dea44b58c2c1
Author: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
Date:   Thu Dec 30 10:29:26 2021 +0800

    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@xxxxxxxxxxx>
    Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20211230022926.1846757-1-jiasheng@xxxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

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);