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Date: Fri, 11 Dec 2020 10:04:36 +0000 From: Lee Jones <lee.jones@...aro.org> To: Thomas Gleixner <tglx@...utronix.de> Cc: LKML <linux-kernel@...r.kernel.org>, Peter Zijlstra <peterz@...radead.org>, Marc Zyngier <maz@...nel.org>, Linus Walleij <linus.walleij@...aro.org>, linux-arm-kernel@...ts.infradead.org, "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>, Helge Deller <deller@....de>, afzal mohammed <afzal.mohd.ma@...il.com>, linux-parisc@...r.kernel.org, Russell King <linux@...linux.org.uk>, Mark Rutland <mark.rutland@....com>, Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, Christian Borntraeger <borntraeger@...ibm.com>, Heiko Carstens <hca@...ux.ibm.com>, linux-s390@...r.kernel.org, Jani Nikula <jani.nikula@...ux.intel.com>, Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>, Rodrigo Vivi <rodrigo.vivi@...el.com>, David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>, Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@...el.com>, Chris Wilson <chris@...is-wilson.co.uk>, Wambui Karuga <wambui.karugax@...il.com>, intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org, Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>, linux-gpio@...r.kernel.org, Jon Mason <jdmason@...zu.us>, Dave Jiang <dave.jiang@...el.com>, Allen Hubbe <allenbh@...il.com>, linux-ntb@...glegroups.com, Lorenzo Pieralisi <lorenzo.pieralisi@....com>, Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>, Michal Simek <michal.simek@...inx.com>, linux-pci@...r.kernel.org, Karthikeyan Mitran <m.karthikeyan@...iveil.co.in>, Hou Zhiqiang <Zhiqiang.Hou@....com>, Tariq Toukan <tariqt@...dia.com>, "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org, linux-rdma@...r.kernel.org, Saeed Mahameed <saeedm@...dia.com>, Leon Romanovsky <leon@...nel.org>, Boris Ostrovsky <boris.ostrovsky@...cle.com>, Juergen Gross <jgross@...e.com>, Stefano Stabellini <sstabellini@...nel.org>, xen-devel@...ts.xenproject.org Subject: Re: [patch 16/30] mfd: ab8500-debugfs: Remove the racy fiddling with irq_desc On Thu, 10 Dec 2020, Thomas Gleixner wrote: > First of all drivers have absolutely no business to dig into the internals > of an irq descriptor. That's core code and subject to change. All of this > information is readily available to /proc/interrupts in a safe and race > free way. > > Remove the inspection code which is a blatant violation of subsystem > boundaries and racy against concurrent modifications of the interrupt > descriptor. > > Print the irq line instead so the information can be looked up in a sane > way in /proc/interrupts. > > Signed-off-by: Thomas Gleixner <tglx@...utronix.de> > Cc: Linus Walleij <linus.walleij@...aro.org> > Cc: Lee Jones <lee.jones@...aro.org> > Cc: linux-arm-kernel@...ts.infradead.org > --- > drivers/mfd/ab8500-debugfs.c | 16 +++------------- > 1 file changed, 3 insertions(+), 13 deletions(-) Acked-by: Lee Jones <lee.jones@...aro.org> -- Lee Jones [李琼斯] Senior Technical Lead - Developer Services Linaro.org │ Open source software for Arm SoCs Follow Linaro: Facebook | Twitter | Blog
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