The kpc2000 driver does not verify whether or not mapping the I/O
space succeeded during probe time. Make the driver verify that the
mapping operation was successful before potentially using that area
in the future.
Signed-off-by: Geordan Neukum <[email protected]>
---
drivers/staging/kpc2000/kpc2000_i2c.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/staging/kpc2000/kpc2000_i2c.c b/drivers/staging/kpc2000/kpc2000_i2c.c
index 452052bf9476..51e91653e183 100644
--- a/drivers/staging/kpc2000/kpc2000_i2c.c
+++ b/drivers/staging/kpc2000/kpc2000_i2c.c
@@ -591,6 +591,8 @@ static int pi2c_probe(struct platform_device *pldev)
return -ENXIO;
priv->smba = (unsigned long)ioremap_nocache(res->start, resource_size(res));
+ if (!priv->smba)
+ return -ENOMEM;
platform_set_drvdata(pldev, priv);
--
2.21.0