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Diffstat (limited to 'drivers/base/platform.c')
-rw-r--r--drivers/base/platform.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 3a94b799f166..2f4aea2428b2 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -677,7 +677,13 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
char *buf)
{
struct platform_device *pdev = to_platform_device(dev);
- int len = snprintf(buf, PAGE_SIZE, "platform:%s\n", pdev->name);
+ int len;
+
+ len = acpi_device_modalias(dev, buf, PAGE_SIZE -1);
+ if (len != -ENODEV)
+ return len;
+
+ len = snprintf(buf, PAGE_SIZE, "platform:%s\n", pdev->name);
return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
}
@@ -699,6 +705,10 @@ static int platform_uevent(struct device *dev, struct kobj_uevent_env *env)
if (rc != -ENODEV)
return rc;
+ rc = acpi_device_uevent_modalias(dev, env);
+ if (rc != -ENODEV)
+ return rc;
+
add_uevent_var(env, "MODALIAS=%s%s", PLATFORM_MODULE_PREFIX,
pdev->name);
return 0;