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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
parent1a4e4d4d2cceb72be70526a485914abd638c7de1 (diff)
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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>
-rw-r--r--drivers/ide/ide-disk.c6
-rw-r--r--drivers/ide/ide-io.c2
-rw-r--r--include/linux/ata.h9
-rw-r--r--include/linux/ide.h3
4 files changed, 13 insertions, 7 deletions
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 8f49bc0ecbf..7b24dff1746 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -651,7 +651,7 @@ static void update_ordered(ide_drive_t *drive)
* not available so we don't need to recheck that.
*/
capacity = idedisk_capacity(drive);
- barrier = ide_id_has_flush_cache(id) && !drive->noflush &&
+ barrier = ata_id_flush_enabled(id) && !drive->noflush &&
(drive->addressing == 0 || capacity <= (1ULL << 28) ||
ide_id_has_flush_cache_ext(id));
@@ -678,7 +678,7 @@ static int set_wcache(ide_drive_t *drive, int arg)
if (arg < 0 || arg > 1)
return -EINVAL;
- if (ide_id_has_flush_cache(drive->id)) {
+ if (ata_id_flush_enabled(drive->id)) {
memset(&args, 0, sizeof(ide_task_t));
args.tf.feature = arg ?
SETFEATURES_WC_ON : SETFEATURES_WC_OFF;
@@ -886,7 +886,7 @@ static void idedisk_setup(ide_drive_t *drive)
static void ide_cacheflush_p(ide_drive_t *drive)
{
- if (!drive->wcache || !ide_id_has_flush_cache(drive->id))
+ if (!drive->wcache || ata_id_flush_enabled(drive->id) == 0)
return;
if (do_idedisk_flushcache(drive))
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 99e0bbca3ac..c1596178fca 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -184,7 +184,7 @@ static ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *
if (drive->media != ide_disk)
break;
/* Not supported? Switch to next step now. */
- if (!drive->wcache || !ide_id_has_flush_cache(drive->id)) {
+ if (!drive->wcache || ata_id_flush_enabled(drive->id) == 0) {
ide_complete_power_step(drive, rq, 0, 0);
return ide_stopped;
}
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 8162257b474..921cf0fc337 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)
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 6e22cd20dd8..d2213d7cc4c 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1453,9 +1453,6 @@ extern struct mutex ide_cfg_mtx;
extern struct bus_type ide_bus_type;
extern struct class *ide_port_class;
-/* check if CACHE FLUSH command is supported (as defined in ATA-6) */
-#define ide_id_has_flush_cache(id) ((id)[ATA_ID_CFS_ENABLE_2] & 0x1000)
-
/* some Maxtor disks have bit 13 defined incorrectly so check bit 10 too */
#define ide_id_has_flush_cache_ext(id) \
(((id)[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400)