tree fbccf835005f082035fd0ab5354e65f456929800
parent 666b9adc801ef012612c4e43e0f44b2cdc1979cf
author Oleksandr Kozaruk <alkhozar@gmail.com> 1377762948 +0300
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1377889684 -0700

drivers: misc: ti-st: fix potential race if st_kim_start fails

If st_kim_start() fails registered protocols should be removed. This is
done by calling st_reg_complete(), which as comment states is called
with spin lock held. But in st_register() when st_kim_start fails it
is called without holding spin lock, creating possibility of concurrent
access to st_gdata data members.
Hold spin lock while calling st_reg_complete if st_kim_start() fails.

Signed-off-by: Oleksandr Kozaruk <oleksandr.kozaruk@globallogic.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>