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platform: introduce OF style 'modalias' support for platform bus

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Fix a problem that, the platform bus supports the OF style modalias
in .uevent() call, but not in its device 'modalias' sysfs attribute.

Signed-off-by: Zhang Rui <[email protected]>
Acked-by: Rob Herring <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Zhang Rui 2014-01-14 16:46:38 +08:00 • committed by Rafael J. Wysocki
commit b9f73067f3
3 changed files with 13 additions and 0 deletions
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4
drivers/base/platform.c
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@ -679,6 +679,10 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
struct platform_device *pdev = to_platform_device(dev);
int len;
len = of_device_get_modalias(dev, buf, PAGE_SIZE -1);
if (len != -ENODEV)
return len;
len = acpi_device_modalias(dev, buf, PAGE_SIZE -1);
if (len != -ENODEV)
return len;