* [PATCH 1/3] ide: check only for CACHE FLUSH command support in ide_id_has_flush_cache()
@ 2008-07-30 21:24 Bartlomiej Zolnierkiewicz
0 siblings, 0 replies; only message in thread
From: Bartlomiej Zolnierkiewicz @ 2008-07-30 21:24 UTC (permalink / raw)
To: linux-ide; +Cc: linux-kernel
All devices supporting CACHE FLUSH EXT command should also support
CACHE FLUSH command so it is sufficient to check only for CACHE FLUSH
in ide_id_has_flush_cache().
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
include/linux/ide.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1451,8 +1451,8 @@ extern struct mutex ide_cfg_mtx;
extern struct bus_type ide_bus_type;
extern struct class *ide_port_class;
-/* check if CACHE FLUSH (EXT) command is supported (bits defined in ATA-6) */
-#define ide_id_has_flush_cache(id) ((id)[ATA_ID_CFS_ENABLE_2] & 0x3000)
+/* 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) \
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2008-07-30 21:24 [PATCH 1/3] ide: check only for CACHE FLUSH command support in ide_id_has_flush_cache() Bartlomiej Zolnierkiewicz
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