Commit 6856ebbf3e46c8184cec15f59d6436692f85d8ba causes libsas panic on SATA DVD

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This patch:

commit 6856ebbf3e46c8184cec15f59d6436692f85d8ba
Author: Tejun Heo <htejun@xxxxxxxxx>
Date:   Mon Apr 7 22:47:20 2008 +0900

    libata: replace tf_read with qc_fill_rtf for non-SFF drivers

Takes away our libsas port_ops->sff_tf_read

However, as soon as we get into atapi_request_sense() we hit

#ifdef CONFIG_ATA_SFF
	ap->ops->sff_tf_read(ap, &qc->tf);
#endif

And panic.

atapi_request_sense seems to be unavoidable if we hit an AC_ERR_DEV in
atapi_qc_complete

How is this supposed to work?

James


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