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-rw-r--r--include/linux/ide.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 732a05f3de0..3d4ba8e95d4 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1327,6 +1327,8 @@ enum {
IDE_HFLAG_SERIALIZE = (1 << 20),
/* host is DTC2278 */
IDE_HFLAG_DTC2278 = (1 << 21),
+ /* 4 devices on a single set of I/O ports */
+ IDE_HFLAG_4DRIVES = (1 << 22),
/* host is TRM290 */
IDE_HFLAG_TRM290 = (1 << 23),
/* use 32-bit I/O ops */