ACPI / LPSS: check the result of ioremap()

If it fails we have to skip the device.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index 4f3febf8a589..d12f98abf836 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -340,6 +340,8 @@ static int acpi_lpss_create_device(struct acpi_device *adev,
                                 pdata->mmio_size = resource_size(&rentry->res);
                         pdata->mmio_base = ioremap(rentry->res.start,
                                                    pdata->mmio_size);
+                        if (!pdata->mmio_base)
+                                goto err_out;
                         break;
                 }