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libata: Implement control mode page to select sense format

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Implement MODE SELECT for the control mode page to allow the OS
to switch to descriptor sense.

tj: Dropped s/sb/cmd->sense_buffer/ in ata_gen_ata_sense().  Added
    @dev description to ata_msense_ctl_mode().

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Hannes Reinecke 2016-04-04 11:44:03 +02:00 • committed by Tejun Heo
parent 11093cb1ef
commit 06dbde5f3a
4 changed files with 91 additions and 33 deletions
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include/linux/libata.h
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@ -180,6 +180,7 @@ enum {
ATA_DFLAG_DA = (1 << 26), /* device supports Device Attention */
ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */
ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */
ATA_DFLAG_D_SENSE = (1 << 29), /* Descriptor sense requested */
ATA_DEV_UNKNOWN = 0, /* unknown device */
ATA_DEV_ATA = 1, /* ATA device */