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staging: kpc2000: kpc_i2c: fail probe if unable to map I/O space

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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 <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Geordan Neukum 2019-05-26 01:18:33 +00:00 • committed by Greg Kroah-Hartman
commit e621c8a108
1 changed files with 2 additions and 0 deletions
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drivers/staging/kpc2000/kpc2000_i2c.c
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@ -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);