Re: [PATCH] spi: bcm2835: do not unregister controller in shutdown handler
From: Florian Fainelli <f.fainelli@gmail.com>
Date: 2021-10-04 17:44:42
Also in:
linux-integrity, linux-spi, lkml, stable
On 10/4/21 10:27 AM, Mark Brown wrote:
On Mon, Oct 04, 2021 at 02:13:01PM -0300, Jason Gunthorpe wrote:quoted
I'm kind of surprised a scheme like this didn't involve a FW call after Linux is done with the CPUs to quiet all the HW and let it sleep, I've built things that way before at least.That's a *lot* of code to put in firmware if you can't physically power most of the system down.
Indeed, and that also assume it may be possible for firmware to have the last say, which is not necessarily possible (though that ought to be a system design issue that would need fixing). It seems reasonable to me to delegate the powering off of the hardware to the respective Linux drivers since they ought to be in the best position to make appropriate decisions for the hardware they control. Anyway, we are divergin slightly here, how do we go about fixing .shutdown here? -- Florian _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel