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IB/qib: Fix debugfs ordering issue with multiple HCAs 

The debugfs init code was incorrectly called before the idr mechanism
is used to get the unit number, so the dd->unit hasn't been
initialized.  This caused the unit relative directory creation to fail
after the first.

This patch moves the init for the debugfs stuff until after all of the
failures and after the unit number has been determined.

A bug in unwind code in qib_alloc_devdata() is also fixed.

Cc: <stable@vger.kernel.org>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Mike Marciniszyn 2014-03-07 08:32:31 -05:00 committed by Roland Dreier
parent a2cb0eb8a6
commit f8b6c47a44
1 changed files with 11 additions and 14 deletions
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25
drivers/infiniband/hw/qib/qib_init.c
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@ -1097,14 +1097,10 @@ struct qib_devdata *qib_alloc_devdata(struct pci_dev *pdev, size_t extra)
int ret;
dd = (struct qib_devdata *) ib_alloc_device(sizeof(*dd) + extra);
if (!dd) {
dd = ERR_PTR(-ENOMEM);
goto bail;
}
if (!dd)
return ERR_PTR(-ENOMEM);
#ifdef CONFIG_DEBUG_FS
qib_dbg_ibdev_init(&dd->verbs_dev);
#endif
INIT_LIST_HEAD(&dd->list);
idr_preload(GFP_KERNEL);
spin_lock_irqsave(&qib_devs_lock, flags);
@ -1121,11 +1117,6 @@ struct qib_devdata *qib_alloc_devdata(struct pci_dev *pdev, size_t extra)
if (ret < 0) {
qib_early_err(&pdev->dev,
"Could not allocate unit ID: error %d\n", -ret);
#ifdef CONFIG_DEBUG_FS
qib_dbg_ibdev_exit(&dd->verbs_dev);
#endif
ib_dealloc_device(&dd->verbs_dev.ibdev);
dd = ERR_PTR(ret);
goto bail;
}
@ -1139,9 +1130,15 @@ struct qib_devdata *qib_alloc_devdata(struct pci_dev *pdev, size_t extra)
qib_early_err(&pdev->dev,
"Could not alloc cpulist info, cpu affinity might be wrong\n");
}
bail:
#ifdef CONFIG_DEBUG_FS
qib_dbg_ibdev_init(&dd->verbs_dev);
#endif
return dd;
bail:
if (!list_empty(&dd->list))
list_del_init(&dd->list);
ib_dealloc_device(&dd->verbs_dev.ibdev);
return ERR_PTR(ret);;
}
/*