From 9faa643855df6f673f08543576c759b82dd270d3 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Fri, 27 Mar 2015 16:46:30 +0100 Subject: libata: use READ_LOG_DMA_EXT If READ_LOG_DMA_EXT is supported we should try to use it for reading the log pages. Signed-off-by: Hannes Reinecke Signed-off-by: Tejun Heo --- include/linux/ata.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux/ata.h') diff --git a/include/linux/ata.h b/include/linux/ata.h index 1648026e06b4..681520f8a3de 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -696,6 +696,13 @@ static inline bool ata_id_wcache_enabled(const u16 *id) return id[ATA_ID_CFS_ENABLE_1] & (1 << 5); } +static inline bool ata_id_has_read_log_dma_ext(const u16 *id) +{ + if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15))) + return false; + return id[ATA_ID_COMMAND_SET_3] & (1 << 3); +} + /** * ata_id_major_version - get ATA level of drive * @id: Identify data -- cgit v1.2.3-55-g7522