Re: [PATCH] Export ahci eSATA attribute

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I never got any comment back on this.  In order for udev to use the
existing attribute, it needs to be moved out of the scsi_host device,
and udev needs patched to handle bitwise comparisons, or my simple patch
adding the new attribute can be applied.

Are you certain you do not want to add a new attribute, and if so, would
you accept a patch moving the existing one out of the scsi_host device
so it will be a proper ancestor of the disk device?

On 11/13/2010 10:46 AM, Phillip Susi wrote:
> On 11/13/2010 12:30 AM, Jeff Garzik wrote:
>> As you noted in your previous mail, the entire PORT_CMD is already
>> exported as a attribute. I don't see much point in exporting this
>> information a second time.
> 
> Unfortunately it is not exported in a way that udev can make use of it.
>  Firstly because udev can only compare on specific value matches rather
> than an individual bit, and secondly because it is in the weird
> scsi_host device rather than the host device, so the attribute is not in
> an ancestor device of the disk device.  Placing this attribute this way
> puts it in the ancestry of the disk device so it can be matched by a
> udev ATTRS rule.

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