Re: [PATCH] libata: always use polling IDENTIFY

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On Sun, 3 Dec 2006 19:30:32 +0900
Tejun Heo <htejun@xxxxxxxxx> wrote:

> libata switched to IRQ-driven IDENTIFY when IRQ-driven PIO was
> introduced.  This has caused a lot of problems including device
> misdetection and phantom device.
> 
> ATA_FLAG_DETECT_POLLING was added recently to selectively use polling
> IDENTIFY on problemetic drivers but many controllers and devices are
> affected by this problem and trying to adding ATA_FLAG_DETECT_POLLING
> for each such case is diffcult and not very rewarding.
> 
> This patch makes libata always use polling IDENTIFY.  This is
> consistent with libata's original behavior and drivers/ide's behavior.
> 
> Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>

Acked-by: Alan Cox <alan@xxxxxxxxxx>

One possibility however would be to invert the flag we have now so we can
try turning -on- IRQ polling on some devices in future and maybe figure
it out that way around ?

Alan
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