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| author | Alexander Gordeev <agordeev@redhat.com> | 2014-07-16 20:05:06 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-07-29 08:38:52 -0400 |
| commit | cd69a09eb2851b3320a8526781916f5a2a1660a2 (patch) | |
| tree | 03e734db3f02b17d242903230e5c490d886e1ca0 /drivers/scsi/bfa | |
| parent | 1e5df2a5332a865fc8a724b5455e29028852a905 (diff) | |
| download | linux-stable-cd69a09eb2851b3320a8526781916f5a2a1660a2.tar.gz linux-stable-cd69a09eb2851b3320a8526781916f5a2a1660a2.tar.bz2 linux-stable-cd69a09eb2851b3320a8526781916f5a2a1660a2.zip | |
bfa: Do not call pci_enable_msix() after it failed once
Function pci_enable_msix() should not be called in case
it threw a negative errno from a previous call.
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Acked-by: Anil Gurumurthy <anil.gurumurthy@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/bfa')
| -rw-r--r-- | drivers/scsi/bfa/bfad.c | 48 |
1 files changed, 23 insertions, 25 deletions
diff --git a/drivers/scsi/bfa/bfad.c b/drivers/scsi/bfa/bfad.c index 7593b7c1d336..bb931808328f 100644 --- a/drivers/scsi/bfa/bfad.c +++ b/drivers/scsi/bfa/bfad.c @@ -1235,33 +1235,31 @@ bfad_setup_intr(struct bfad_s *bfad) (bfa_asic_id_cb(pdev->device) && !msix_disable_cb)) { error = pci_enable_msix(bfad->pcidev, msix_entries, bfad->nvec); - if (error) { - /* In CT1 & CT2, try to allocate just one vector */ - if (bfa_asic_id_ctc(pdev->device)) { - printk(KERN_WARNING "bfa %s: trying one msix " - "vector failed to allocate %d[%d]\n", - bfad->pci_name, bfad->nvec, error); - bfad->nvec = 1; - error = pci_enable_msix(bfad->pcidev, + /* In CT1 & CT2, try to allocate just one vector */ + if (error > 0 && bfa_asic_id_ctc(pdev->device)) { + printk(KERN_WARNING "bfa %s: trying one msix " + "vector failed to allocate %d[%d]\n", + bfad->pci_name, bfad->nvec, error); + bfad->nvec = 1; + error = pci_enable_msix(bfad->pcidev, msix_entries, bfad->nvec); - } + } - /* - * Only error number of vector is available. - * We don't have a mechanism to map multiple - * interrupts into one vector, so even if we - * can try to request less vectors, we don't - * know how to associate interrupt events to - * vectors. Linux doesn't duplicate vectors - * in the MSIX table for this case. - */ - if (error) { - printk(KERN_WARNING "bfad%d: " - "pci_enable_msix failed (%d), " - "use line based.\n", - bfad->inst_no, error); - goto line_based; - } + /* + * Only error number of vector is available. + * We don't have a mechanism to map multiple + * interrupts into one vector, so even if we + * can try to request less vectors, we don't + * know how to associate interrupt events to + * vectors. Linux doesn't duplicate vectors + * in the MSIX table for this case. + */ + if (error) { + printk(KERN_WARNING "bfad%d: " + "pci_enable_msix failed (%d), " + "use line based.\n", + bfad->inst_no, error); + goto line_based; } /* Disable INTX in MSI-X mode */ |