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sata: ahci-da850: Fix some error handling paths in 'ahci_da850_probe()' 

'rc' is known to be 0 at this point.
If 'platform_get_resource()' or 'devm_ioremap()' fail, return -ENOMEM
instead of 0 which means success.

tj: Changed error code from -ENOMEM to -ENODEV for get_resource
    failure as suggested by Sergei.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
This commit is contained in:
Christophe JAILLET 2017-08-16 07:31:03 +02:00 committed by Tejun Heo
parent 2f60e1ab2f
commit c88c094985
1 changed files with 6 additions and 2 deletions
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8
drivers/ata/ahci_da850.c
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@ -216,12 +216,16 @@ static int ahci_da850_probe(struct platform_device *pdev)
return rc;
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!res)
if (!res) {
rc = -ENODEV;
goto disable_resources;
}
pwrdn_reg = devm_ioremap(dev, res->start, resource_size(res));
if (!pwrdn_reg)
if (!pwrdn_reg) {
rc = -ENOMEM;
goto disable_resources;
}
da850_sata_init(dev, pwrdn_reg, hpriv->mmio, mpy);