Possible Bug In ATA/SCSI Fixed Sense

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Hi all,

As of Linux commit 14970f204b1993af7459d5bd34aaff38dfee6670, In
drivers/ata/libata-scsi.c in ata_gen_passthru_sense() line 1087,
desc[0] is set to tf->feature. This makes sense to me however 4 lines
below the same item in the array is set to 0.

One of these lines must be unintended as no matter what the field will
always be 0 though for a couple lines it is set to tf-feature.

I think that line 1091 is at fault because if I send down a nop
command, feature (error in this case) should be set to 4 in the
returned current task file.

Thanks!

- Charlie Scott Machalow
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