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| author | Hannes Reinecke <hare@suse.de> | 2015-03-27 16:46:30 +0100 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2015-03-27 11:59:21 -0400 |
| commit | 9faa643855df6f673f08543576c759b82dd270d3 (patch) | |
| tree | 39c8dade6f6d9b826d68fcc11b51f08c41583d9e /include/linux/ata.h | |
| parent | 3a02824396c1df1db422d067b0fdcac724f44dd6 (diff) | |
| download | lwn-9faa643855df6f673f08543576c759b82dd270d3.tar.gz lwn-9faa643855df6f673f08543576c759b82dd270d3.zip | |
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 <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'include/linux/ata.h')
| -rw-r--r-- | include/linux/ata.h | 7 |
1 files changed, 7 insertions, 0 deletions
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 |