tree 43c2bf17b0aac44441cb19a23f5906f1f66f1d4a
parent 8102f929622362b7c0f2a8b7619f299f88755daa
author Yong Li <yong.b.li@linux.intel.com> 1510900458 +0800
committer Brad Bishop <bradleyb@fuzziesquirrel.com> 1512425301 +0000

Add lseek to support GPIO read/write

GPIO api does not support repeat read(read multi times after one open).
A workaround is close and reopen the device before the second read.
The root cause is that the file descriptor is not moved to beginning of the file, this patch can fix this issue

Change-Id: I40e5602669c9ab6f0dddf5aa77040466cbfa3738
Signed-off-by: Yong Li <yong.b.li@linux.intel.com>