Re: [PATCH] spi: bcm2835: do not unregister controller in shutdown handler
From: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Date: 2021-10-04 18:31:11
Also in:
linux-integrity, linux-spi, lkml, stable
On 04.10.21 at 17:44, Jason Gunthorpe wrote:
Well, that is up to the driver implementing this. It looks like device shutdown is called before the userspace is all nuked so yes, concurrency with userspace is a possible concern here.
So the TPM driver has to handle remove() after shutdown() anyway, right? Because even if not caused by the BCM2835 drivers controller unregistration something else could unload the module and the problem (NULL pointer access) would be the same. Regards, Lino _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel