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Revert "block: unexport DISK_EVENT_MEDIA_CHANGE for legacy/fringe drivers"

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This reverts commit 9fd097b149.

Instead of leaving disk->events completely empty, we now export the
supported events again, and tell the block layer not to forward events to
user space by not setting DISK_EVENT_FLAG_UEVENT. This allows the block
layer to distinguish between devices that for which events should be
handled in kernel only, and devices which don't support any meda change
events at all.

Cc: Jiri Kosina <[email protected]>
Cc: Tim Waugh <[email protected]>
Cc: Michal Simek <[email protected]>
Reviewed-by: Hannes Reinecke <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Martin Wilck <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Martin Wilck 2019-03-27 14:51:04 +01:00 • committed by Jens Axboe
commit 773008f6fe
10 changed files with 10 additions and 0 deletions
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1
drivers/cdrom/gdrom.c
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@ -786,6 +786,7 @@ static int probe_gdrom(struct platform_device *devptr)
goto probe_fail_cdrom_register;
}
gd.disk->fops = &gdrom_bdops;
gd.disk->events = DISK_EVENT_MEDIA_CHANGE;
/* latch on to the interrupt */
err = gdrom_set_interrupt_handlers();
if (err)