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scsi: don't add scsi_device if its already visible

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If LLD has added scsi device (by calling scsi_add_device) before scheduling
async scsi_scan_host then scsi_finish_async_scan() will end up calling
scsi_sysfs_add_sdev for scsi device which was already added by LLD.
This patch fixes this issue by skipping the call to scsi_sysfs_add_sdev()
if it's already visible to rest of the kernel.

Signed-off-by: Subhash Jadavani <[email protected]>
Signed-off-by: Dolev Raviv <[email protected]>
Reviewed-by: Hannes Reinecke <[email protected]>
Reviewed-by: Martin K. Petersen <[email protected]>
Signed-off-by: Christoph Hellwig <[email protected]>
This commit is contained in:
Subhash Jadavani 2014-09-25 15:32:20 +03:00 • committed by Christoph Hellwig
commit 693ad5ba13
1 changed files with 3 additions and 0 deletions
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3
drivers/scsi/scsi_scan.c
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@ -1756,6 +1756,9 @@ static void scsi_sysfs_add_devices(struct Scsi_Host *shost)
/* target removed before the device could be added */
if (sdev->sdev_state == SDEV_DEL)
continue;
/* If device is already visible, skip adding it to sysfs */
if (sdev->is_visible)
continue;
if (!scsi_host_scan_allowed(shost) ||
scsi_sysfs_add_sdev(sdev) != 0)
__scsi_remove_device(sdev);