diff options
Diffstat (limited to 'drivers/misc/pvpanic.c')
| -rw-r--r-- | drivers/misc/pvpanic.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/misc/pvpanic.c b/drivers/misc/pvpanic.c index 951b37da5e3c..41cab297d66e 100644 --- a/drivers/misc/pvpanic.c +++ b/drivers/misc/pvpanic.c @@ -55,12 +55,23 @@ static int pvpanic_mmio_probe(struct platform_device *pdev) struct resource *res; res = platform_get_mem_or_io(pdev, 0); - if (res && resource_type(res) == IORESOURCE_IO) + if (!res) + return -EINVAL; + + switch (resource_type(res)) { + case IORESOURCE_IO: base = devm_ioport_map(dev, res->start, resource_size(res)); - else + if (!base) + return -ENOMEM; + break; + case IORESOURCE_MEM: base = devm_ioremap_resource(dev, res); - if (IS_ERR(base)) - return PTR_ERR(base); + if (IS_ERR(base)) + return PTR_ERR(base); + break; + default: + return -EINVAL; + } atomic_notifier_chain_register(&panic_notifier_list, &pvpanic_panic_nb); |