tree fa70eff8f8c7ef372a65e81854d23877c8dd946a
parent c11257d864ffdc5441123de7cce588a49df66701
author Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com> 1596094159 -0700
committer Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com> 1618864959 -0700

Refine HID report writing logic

Blocking write on the keyboard HID device causes screen freezing
during turning off the host power. To fix this issue, this commit
refines the logic using non-blocking write. As a side effect,
non-blocking write introduces event dropping when kernel HID driver
returns -EAGAIN when the driver is in busy state so this commit also
adds retry logic to cover the case.

Tested: Didn't see the screen freezing issue.

Change-Id: Ibd95f567c49f448cd053948c14c006de17c52420
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>