[PATCH] ide: don't send cacheflush to drives that don't understand it

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index e8cfd222669cc302046ae1c8dd5c2a3c605395e3..ac94367eeade834910e1b2caf81a6b07c4b76e0e 100644 (file)
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -1774,6 +1774,9 @@ static int idedisk_open(struct inode *inode, struct file *filp)
 
 static int ide_cacheflush_p(ide_drive_t *drive)
 {
+       if (!(drive->id->cfs_enable_2 & 0x3000))
+               return 0;
+
        if(drive->wcache)
        {
                if (do_idedisk_flushcache(drive))