diff options
| author | Robert Elliott <elliott@hp.com> | 2014-11-15 02:27:24 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-11-20 11:11:27 +0300 |
| commit | 4fa604e13bb2a6ef6e89224c80d96af385f533c3 (patch) | |
| tree | 144db757929f69c824f3848a6cb0dd751248acef /drivers/scsi | |
| parent | 763aadbf5015e86e93d209f10e34fd4daacc459b (diff) | |
| download | linux-4fa604e13bb2a6ef6e89224c80d96af385f533c3.tar.xz | |
hpsa: always call pci_set_master after pci_enable_device
If the kernel is booted with the reset_device parameter, which
is done for kdump, then the driver needs to call pci_set_master
after pci_enable_device to reenable bus mastering (since
the preceding pci_disable_device call disables bus mastering).
Also, place that after pci_request_regions both in the
kdump code and the normal pci_init code.
Remove the comment summarizing what pci_set_master
does, with the incomplete commentary on the impact of
pci_disable_device.
Signed-off-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Don Brace <don.brace@pmcs.com>
Reviewed-by: Don Brace <don.brace@pmcs.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/hpsa.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 4db9d1921dca..36db63f63143 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -6363,15 +6363,15 @@ static int hpsa_pci_init(struct ctlr_info *h) return err; } - /* Enable bus mastering (pci_disable_device may disable this) */ - pci_set_master(h->pdev); - err = pci_request_regions(h->pdev, HPSA); if (err) { dev_err(&h->pdev->dev, "cannot obtain PCI resources, aborting\n"); return err; } + + pci_set_master(h->pdev); + hpsa_interrupt_mode(h); err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr); if (err) @@ -6451,7 +6451,9 @@ static int hpsa_init_reset_devices(struct pci_dev *pdev) dev_warn(&pdev->dev, "failed to enable device.\n"); return -ENODEV; } + pci_set_master(pdev); + /* Reset the controller with a PCI power-cycle or via doorbell */ rc = hpsa_kdump_hard_reset_controller(pdev); |