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authorZhang Rui <rui.zhang@intel.com>2014-01-14 16:46:38 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-01-17 01:59:15 +0100
commitb9f73067f32531db608e469a9ad20ce631e34550 (patch)
treed3377f695cbdb34e9873846f8dbac79f883d5014 /drivers/of/device.c
parent8c4ff6d0094a16809a7ecdd49d71cf06b0a51326 (diff)
downloadlinux-b9f73067f32531db608e469a9ad20ce631e34550.tar.bz2
platform: introduce OF style 'modalias' support for platform bus
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 <rui.zhang@intel.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/of/device.c')
-rw-r--r--drivers/of/device.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/of/device.c b/drivers/of/device.c
index f685e55e0717..dafb9736ab9b 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -85,6 +85,9 @@ ssize_t of_device_get_modalias(struct device *dev, char *str, ssize_t len)
int cplen, i;
ssize_t tsize, csize, repend;
+ if ((!dev) || (!dev->of_node))
+ return -ENODEV;
+
/* Name & Type */
csize = snprintf(str, len, "of:N%sT%s", dev->of_node->name,
dev->of_node->type);