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Date: Tue, 25 Aug 2020 13:00:04 -0700 From: Doug Anderson <dianders@...omium.org> To: Maulik Shah <mkshah@...eaurora.org> Cc: Bjorn Andersson <bjorn.andersson@...aro.org>, Marc Zyngier <maz@...nel.org>, LinusW <linus.walleij@...aro.org>, Stephen Boyd <swboyd@...omium.org>, Evan Green <evgreen@...omium.org>, Matthias Kaehlcke <mka@...omium.org>, LKML <linux-kernel@...r.kernel.org>, linux-arm-msm <linux-arm-msm@...r.kernel.org>, "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>, Andy Gross <agross@...nel.org>, Thomas Gleixner <tglx@...utronix.de>, Jason Cooper <jason@...edaemon.net>, Rajendra Nayak <rnayak@...eaurora.org>, Lina Iyer <ilina@...eaurora.org>, Srinivas Rao L <lsrao@...eaurora.org> Subject: Re: [PATCH v5 6/6] irqchip: qcom-pdc: Reset PDC interrupts during init Hi, On Sat, Aug 22, 2020 at 9:18 AM Maulik Shah <mkshah@...eaurora.org> wrote: > > 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. > > Suggested-by: Stephen Boyd <swboyd@...omium.org> > Signed-off-by: Maulik Shah <mkshah@...eaurora.org> > --- > drivers/irqchip/qcom-pdc.c | 11 ++++++++++- > 1 file changed, 10 insertions(+), 1 deletion(-) Reviewed-by: Douglas Anderson <dianders@...omium.org>
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