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imm: check parport_claim

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parport_claim() can fail and we should be checking if we were able to
claim the port.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Sudip Mukherjee 2016-02-24 16:27:11 +05:30 committed by Martin K. Petersen
parent 797150b98a
commit 9ffeca3e57
1 changed files with 4 additions and 3 deletions
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7
drivers/scsi/imm.c
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@ -77,9 +77,10 @@ static void imm_wakeup(void *ref)
spin_lock_irqsave(&arbitration_lock, flags);
if (dev->wanted) {
parport_claim(dev->dev);
got_it(dev);
dev->wanted = 0;
if (parport_claim(dev->dev) == 0) {
got_it(dev);
dev->wanted = 0;
}
}
spin_unlock_irqrestore(&arbitration_lock, flags);
}