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Date: Fri, 05 Dec 2014 21:34:24 -0800 (PST) From: David Miller <davem@...emloft.net> To: LinoSanfilippo@....de Cc: stephen@...workplumber.org, mlindner@...vell.com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] sky2: avoid pci write posting after disabling irqs From: Lino Sanfilippo <LinoSanfilippo@....de> Date: Sun, 30 Nov 2014 12:56:51 +0100 > In sky2_change_mtu setting B0_IMSK to 0 may be delayed due to PCI write posting > which could result in irqs being still active when synchronize_irq is called. > Since we are not prepared to handle any further irqs after synchronize_irq > (our resources are freed after that) force the write by a consecutive read from > the same register. > Similar situation in sky2_all_down: Here we disabled irqs by a write to B0_IMSK > but did not ensure that this write took place before synchronize_irq. Fix that > too. > > Signed-off-by: Lino Sanfilippo <LinoSanfilippo@....de> Applied. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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