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[SCSI] fix oops on usb storage device disconnect

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We fix the oops by enforcing the host state model.  There have also
been two extra states added: SHOST_CANCEL_RECOVERY and
SHOST_DEL_RECOVERY so we can take the model through host removal while
the recovery thread is active.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
James Bottomley
2005-09-18 15:05:20 -05:00
committed by James Bottomley
parent a64358db12
commit 939647ee30
8 changed files with 66 additions and 16 deletions
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drivers/scsi/scsi_ioctl.c
+1 -1
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@@ -458,7 +458,7 @@ int scsi_nonblockable_ioctl(struct scsi_device *sdev, int cmd,
* error processing, as long as the device was opened
* non-blocking */
if (filp && filp->f_flags & O_NONBLOCK) {
if (sdev->host->shost_state == SHOST_RECOVERY)
if (scsi_host_in_recovery(sdev->host))
return -ENODEV;
} else if (!scsi_block_when_processing_errors(sdev))
return -ENODEV;