Merge branch 'master' into for-next

Fast-forwarded to current state of Linus' tree as there are patches to be
applied for files that didn't exist on the old branch.

1 files changed, 13 insertions, 6 deletions

diff --git a/drivers/ide/ide-gd.c b/drivers/ide/ide-gd.c
index 35c4b43585e3..70ea8763567d 100644
--- a/drivers/ide/ide-gd.c
+++ b/drivers/ide/ide-gd.c
@@ -285,11 +285,12 @@ static int ide_gd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
 	return 0;
 }
 
-static int ide_gd_media_changed(struct gendisk *disk)
+static unsigned int ide_gd_check_events(struct gendisk *disk,
+					unsigned int clearing)
 {
 	struct ide_disk_obj *idkp = ide_drv_g(disk, ide_disk_obj);
 	ide_drive_t *drive = idkp->drive;
-	int ret;
+	bool ret;
 
 	/* do not scan partitions twice if this is a removable device */
 	if (drive->dev_flags & IDE_DFLAG_ATTACH) {
@@ -297,10 +298,16 @@ static int ide_gd_media_changed(struct gendisk *disk)
 		return 0;
 	}
 
-	ret = !!(drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED);
+	/*
+	 * The following is used to force revalidation on the first open on
+	 * removeable devices, and never gets reported to userland as
+	 * genhd->events is 0.  This is intended as removeable ide disk
+	 * can't really detect MEDIA_CHANGE events.
+	 */
+	ret = drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED;
 	drive->dev_flags &= ~IDE_DFLAG_MEDIA_CHANGED;
 
-	return ret;
+	return ret ? DISK_EVENT_MEDIA_CHANGE : 0;
 }
 
 static void ide_gd_unlock_native_capacity(struct gendisk *disk)
@@ -318,7 +325,7 @@ static int ide_gd_revalidate_disk(struct gendisk *disk)
 	struct ide_disk_obj *idkp = ide_drv_g(disk, ide_disk_obj);
 	ide_drive_t *drive = idkp->drive;
 
-	if (ide_gd_media_changed(disk))
+	if (ide_gd_check_events(disk, 0))
 		drive->disk_ops->get_capacity(drive);
 
 	set_capacity(disk, ide_gd_capacity(drive));
@@ -340,7 +347,7 @@ static const struct block_device_operations ide_gd_ops = {
 	.release		= ide_gd_release,
 	.ioctl			= ide_gd_ioctl,
 	.getgeo			= ide_gd_getgeo,
-	.media_changed		= ide_gd_media_changed,
+	.check_events		= ide_gd_check_events,
 	.unlock_native_capacity	= ide_gd_unlock_native_capacity,
 	.revalidate_disk	= ide_gd_revalidate_disk
 };