summaryrefslogtreecommitdiffstats
path: root/include/linux/ata.h
diff options
context:
space:
mode:
authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-10-10 22:39:30 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-10-10 22:39:30 +0200
commit4b58f17d7c45a8e5f4acda641bec388398b9c0fa (patch)
tree60ff1975dea044c3f268818f69001df5ac10eb42 /include/linux/ata.h
parent1a4e4d4d2cceb72be70526a485914abd638c7de1 (diff)
downloadop-kernel-dev-4b58f17d7c45a8e5f4acda641bec388398b9c0fa.zip
op-kernel-dev-4b58f17d7c45a8e5f4acda641bec388398b9c0fa.tar.gz
ide: ide_id_has_flush_cache() -> ata_id_flush_enabled()
* Add ata_id_flush_enabled() inline helper to <linux/ata.h>. * ide_id_has_flush_cache() -> ata_id_flush_enabled() The latter one also checks if the command is marked as supported in word 83 and validity of words 83 & 86. Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'include/linux/ata.h')
-rw-r--r--include/linux/ata.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 8162257..921cf0f 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -558,6 +558,15 @@ static inline int ata_id_has_flush(const u16 *id)
return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
}
+static inline int ata_id_flush_enabled(const u16 *id)
+{
+ if (ata_id_has_flush(id) == 0)
+ return 0;
+ if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
+ return 0;
+ return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
+}
+
static inline int ata_id_has_flush_ext(const u16 *id)
{
if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
OpenPOWER on IntegriCloud