Re: [linux-usb-devel] USB/hal: USB open() broken? (USB CD burnerunderruns, USB HDD hard resets)

From: Alan Cox
Date: Tue Jun 20 2006 - 04:50:56 EST


Ar Maw, 2006-06-20 am 01:37 -0700, ysgrifennodd Andrew Morton:
> [hald polling causes cdrecord to go bad on a USB CD drive]
>
> One possible reason is that we're shooting down the device's pagecache by
> accident as a result of hald activity.

On IDE hal causes problems with some drives because the additional
commands sent while the drive is busy end up timing out which triggers a
bus reset and breaks everything. Really HAL should have better manners
than to poll a drive that is busy.

Alan

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