From: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Date: Thu, 8 Jan 2015 07:57:25 +0000 (+0200)
Subject: ACPI / LPSS: check the result of ioremap()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4483d59e29fea65ef428be92a866aed50e28c795;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

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>
---

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;
 		}