On Wed, Feb 18, 2009 at 10:16:07AM +0800, d...@datangmobile.cn wrote: > From: Da Yu <d...@datangmobile.cn> > Date: Wed, 18 Feb 2009 19:58:20 +0800 > Subject: [PATCH] fix the interrupt loss problem on powerpc IPIC > (2.6.25-2.6.28) > > Signed-off-by: Da Yu <d...@datangmobile.cn>
Still no proper explanation in the patch. Also, with this change, is 'temp' really needed, or can you just pass in the mask by hand? -Olof > --- > > --- a/arch/powerpc/sysdev/ipic.c 2009-02-18 09:47:04.000000000 +0800 > +++ b/arch/powerpc/sysdev/ipic.c 2009-02-18 09:46:34.000000000 +0800 > @@ -568,8 +568,7 @@ static void ipic_ack_irq(unsigned int vi > > spin_lock_irqsave(&ipic_lock, flags); > > - temp = ipic_read(ipic->regs, ipic_info[src].ack); > - temp |= (1 << (31 - ipic_info[src].bit)); > + temp = 1 << (31 - ipic_info[src].bit); > ipic_write(ipic->regs, ipic_info[src].ack, temp); > > /* mb() can't guarantee that ack is finished. But it does finish _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
