From: Liu Xiang <liu.xia...@zte.com.cn> Date: Wed, 31 May 2017 23:06:42 +0800
> On the DM9000B, dm9000_phy_write() is called after the main spinlock > is held, during the dm9000_timeout() routine. Spinlock recursion > occurs because the main spinlock is requested again in > dm9000_phy_write(). So spinlock should be avoided in dm9000_phy_write() > during the dm9000_timeout() routine. > > Signed-off-by: Liu Xiang <liu.xia...@zte.com.cn> It think this is racy. Now, during a timeout device reset, another thread of control can come in and access phy registers without any synchronization whatsoever.
