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[SCSI] qla4xxx: remove unnecessary read of PCI_CAP_ID_EXP

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The PCIE capability offset is saved during PCI bus walking.  It will
remove an unnecessary search in the PCI configuration space if this
value is referenced instead of reacquiring it.

Signed-off-by: Jon Mason <jdmason@kudzu.us>
Acked-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Jon Mason 2012-07-10 14:57:55 -07:00 committed by James Bottomley
parent 94c122ab01
commit 983bfb5b40
1 changed files with 1 additions and 1 deletions
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drivers/scsi/qla4xxx/ql4_nx.c
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@ -1590,7 +1590,7 @@ qla4_8xxx_start_firmware(struct scsi_qla_host *ha, uint32_t image_start)
} }
/* Negotiated Link width */ /* Negotiated Link width */
pcie_cap = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP); pcie_cap = pci_pcie_cap(ha->pdev);
pci_read_config_word(ha->pdev, pcie_cap + PCI_EXP_LNKSTA, &lnk); pci_read_config_word(ha->pdev, pcie_cap + PCI_EXP_LNKSTA, &lnk);
ha->link_width = (lnk >> 4) & 0x3f; ha->link_width = (lnk >> 4) & 0x3f;