RE: [PATCH libata v2] Allow system to allocate IRQ 0 to ATA devices

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Sorry for putting u into the reviewed-by before getting your ack.   I will split this patch and re-send it. 

-chaohong 

> -----Original Message-----
> From: Sergei Shtylyov [mailto:sergei.shtylyov@xxxxxxxxxxxxxxxxxx]
> Sent: Monday, November 5, 2018 12:40 AM
> To: Guo, Chaohong <chaohong.guo@xxxxxxxxx>; linux-ide@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH libata v2] Allow system to allocate IRQ 0 to ATA devices
> 
> Hello!
> 
> On 11/2/2018 4:46 AM, Chaohong guo wrote:
> 
> > Interrupt vector 0 can be used on some platform. In libata, the
> > routine
> > ata_host_activate() considers irq=0 as invalid. As a result, when
> > running linux in non-root cell of Jailhouse,  if we allocate just one
> > PCI ATA device to the guest, the device will get an IRQ of value 0.
> > Although IRQ0 is perfectly legal, ATA device will fail to start up.
> > Besides, some ATA drivers have the same bug and consider irq0 as
> > invalid, So, we fix them as well.
> >
> > Signed-off-by: Chaohong guo <chaohong.guo@xxxxxxxxx>
> > Reviewed-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
> 
>     I haven't explicitly given you my Reviewed-by: tag, you can't add it just
> because I commented to your patch.
> 
> MBR, Sergei




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