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qla2xxx: Delay driver unload if there is any pending activity going on.

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Signed-off-by: Sawan Chandak <sawan.chandak@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Sawan Chandak 2014-04-11 16:54:38 -04:00 committed by Christoph Hellwig
parent 7c6300e394
commit 638a1a01d3
1 changed files with 24 additions and 0 deletions
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24
drivers/scsi/qla2xxx/qla_os.c
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@ -843,6 +843,28 @@ qla2x00_wait_for_hba_online(scsi_qla_host_t *vha)
return (return_status);
}
/*
* qla2x00_wait_for_hba_ready
* Wait till the HBA is ready before doing driver unload
*
* Input:
* ha - pointer to host adapter structure
*
* Note:
* Does context switching-Release SPIN_LOCK
* (if any) before calling this routine.
*
*/
static void
qla2x00_wait_for_hba_ready(scsi_qla_host_t *vha)
{
struct qla_hw_data *ha = vha->hw;
while ((!(vha->flags.online) || ha->dpc_active ||
ha->flags.mbox_busy))
msleep(1000);
}
/*
* qla2x00_wait_for_reset_ready
* Wait till the HBA is online after going through
@ -3161,6 +3183,8 @@ qla2x00_remove_one(struct pci_dev *pdev)
base_vha = pci_get_drvdata(pdev);
ha = base_vha->hw;
qla2x00_wait_for_hba_ready(base_vha);
set_bit(UNLOADING, &base_vha->dpc_flags);
if (IS_QLAFX00(ha))