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firewire: fw-sbp2: fix NULL pointer deref. in slave_alloc

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Fix a kernel bug when running rescan-scsi-bus while a FireWire disk is
connected:  http://bugzilla.kernel.org/show_bug.cgi?id=10008

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Stefan Richter 2008-02-17 14:56:19 +01:00
parent 2e2705bdcb
commit 5513c5f6f9
1 changed files with 4 additions and 0 deletions
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4
drivers/firewire/fw-sbp2.c
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@ -1473,6 +1473,10 @@ static int sbp2_scsi_slave_alloc(struct scsi_device *sdev)
{
struct sbp2_logical_unit *lu = sdev->hostdata;
/* (Re-)Adding logical units via the SCSI stack is not supported. */
if (!lu)
return -ENOSYS;
sdev->allow_restart = 1;
/*