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Date: Tue, 25 Aug 2020 03:14:08 -0700 From: Stephen Boyd <swboyd@...omium.org> To: Maulik Shah <mkshah@...eaurora.org>, bjorn.andersson@...aro.org, evgreen@...omium.org, linus.walleij@...aro.org, maz@...nel.org, mka@...omium.org Cc: linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org, linux-gpio@...r.kernel.org, agross@...nel.org, tglx@...utronix.de, jason@...edaemon.net, dianders@...omium.org, rnayak@...eaurora.org, ilina@...eaurora.org, lsrao@...eaurora.org, Maulik Shah <mkshah@...eaurora.org> Subject: Re: [PATCH v5 6/6] irqchip: qcom-pdc: Reset PDC interrupts during init Quoting Maulik Shah (2020-08-22 09:17:01) > Kexec can directly boot into a new kernel without going to complete > reboot. This can leave the previous kernel's configuration for PDC > interrupts as is. > > Clear previous kernel's configuration during init by setting interrupts > in enable bank to zero. The IRQs specified in qcom,pdc-ranges property > are the only ones that can be used by the new kernel so clear only those > IRQs. The remaining ones may be in use by a different kernel and should > not be set by new kernel. Presumably they're not in use anymore if the kernel has been kexeced and replaced this one? > > Suggested-by: Stephen Boyd <swboyd@...omium.org> > Signed-off-by: Maulik Shah <mkshah@...eaurora.org> > --- Reviewed-by: Stephen Boyd <swboyd@...omium.org>
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