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authorZhang Rui <rui.zhang@intel.com>2009-06-22 11:31:14 +0800
committerLen Brown <len.brown@intel.com>2009-06-23 23:19:13 -0400
commit056c308d3e4859334b519033d62ef050f0e0e261 (patch)
tree8d7a995782d043c6417aef7740edf617c2431de1 /init
parent07a2039b8eb0af4ff464efd3dfd95de5c02648c6 (diff)
downloadlinaro-lsk-056c308d3e4859334b519033d62ef050f0e0e261.tar.gz
Show the physical device node of backlight class device.
Create symbol link from backlight class device to ACPI video device. More and more laptops are shipped with multiple ACPI video devices, while we export only one of them to userspace. With this patch applied, we can know which ACPI video device is used by "cat /sys/class/backlight/acpi_video0/device/path". Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
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