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Commit 406c057c authored by Martin K. Petersen's avatar Martin K. Petersen Committed by Tejun Heo
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libata: READ LOG DMA EXT support can be in either page 119 or 120 



Support for the READ/WRITE LOG DMA EXT commands can be signaled either
in page 119 or page 120. We should check both pages.

Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: default avatarHannes Reinecke <hare@suse.de>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent f3030741

include/linux/ata.h

+11 −1
Original line number Diff line number Diff line
@@ -704,9 +704,19 @@ static inline bool ata_id_wcache_enabled(const u16 *id) 


static inline bool ata_id_has_read_log_dma_ext(const u16 *id)

{

	/* Word 86 must have bit 15 set */

	if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))

		return false;

	return id[ATA_ID_COMMAND_SET_3] & (1 << 3);



	/* READ LOG DMA EXT support can be signaled either from word 119

	 * or from word 120. The format is the same for both words: Bit

	 * 15 must be cleared, bit 14 set and bit 3 set.

	 */

	if ((id[ATA_ID_COMMAND_SET_3] & 0xC008) == 0x4008 ||

	    (id[ATA_ID_COMMAND_SET_4] & 0xC008) == 0x4008)

		return true;



	return false;

}



static inline bool ata_id_has_sense_reporting(const u16 *id)