ide: check only for CACHE FLUSH command support in ide_id_has_flush_cache()

PATCH New Bartlomiej Zolnierkiewicz 1 participant 1 message Jul 30, 2008 libata

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Bartlomiej Zolnierkiewicz

author

2008-07-30 22:23 UTC #0 lore raw

PATCH 1/3 ide: check only for CACHE FLUSH command support in ide_id_has_flush_cache()

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 <[email protected]>

---
 include/linux/ide.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

include/linux/ide.h +2 -2

Index: 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)	\