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[SCSI] Fix module removal/device add race 

This patch (as546) fixes an oops-causing failure to check the return code
from scsi_device_get.  The call can return an error if the LLD is being
unloaded from memory.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Alan Stern 2005-07-26 10:30:40 -04:00 committed by James Bottomley
parent f631b4be76
commit b70d37bf61
1 changed files with 6 additions and 2 deletions
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8
drivers/scsi/scsi_scan.c
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@ -870,8 +870,12 @@ static int scsi_probe_and_add_lun(struct scsi_target *starget,
out_free_sdev:
if (res == SCSI_SCAN_LUN_PRESENT) {
if (sdevp) {
scsi_device_get(sdev);
*sdevp = sdev;
if (scsi_device_get(sdev) == 0) {
*sdevp = sdev;
} else {
__scsi_remove_device(sdev);
res = SCSI_SCAN_NO_RESPONSE;
}
}
} else {
if (sdev->host->hostt->slave_destroy)