On Mon, May 03, 2021 at 03:11:40PM +0200, Frieder Schrempf wrote: > Hi, > > with kernel 5.10.x and 5.12.x I'm getting a null pointer dereference > exception from the mcp251x driver when I resume from sleep (see trace > below). > > As far as I can tell this was working fine with 5.4. As I currently don't > have the time to do further debugging/bisecting, for now I want to at least > report this here. > > Maybe there is someone around who could already give a wild guess for what > might cause this just by looking at the trace/code!? Does revert of c7299fea6769 ("spi: Fix spi device unregister flow") help? -- With Best Regards, Andy Shevchenko