From: Jon Mason Date: Tue, 10 Jul 2012 21:57:56 +0000 (-0700) Subject: [SCSI] qla2xxx: remove unnecessary reads of PCI_CAP_ID_EXP X-Git-Tag: master-2012-08-06~86^2~10 X-Git-Url: http://pileus.org/git/?a=commitdiff_plain;h=e67f13212a2b48a19b7c8433df40439177963a57;p=~andy%2Flinux [SCSI] qla2xxx: remove unnecessary reads of PCI_CAP_ID_EXP 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. Also, pci_is_pcie is a better way of determining if the device is PCIE or not (as it uses the same saved PCIE capability offset). Signed-off-by: Jon Mason Acked-by: Chad Dupuis Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index ca508474313..a44653b4216 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -685,7 +685,7 @@ qla24xx_pci_config(scsi_qla_host_t *vha) pcix_set_mmrbc(ha->pdev, 2048); /* PCIe -- adjust Maximum Read Request Size (2048). */ - if (pci_find_capability(ha->pdev, PCI_CAP_ID_EXP)) + if (pci_is_pcie(ha->pdev)) pcie_set_readrq(ha->pdev, 2048); pci_disable_rom(ha->pdev); @@ -721,7 +721,7 @@ qla25xx_pci_config(scsi_qla_host_t *vha) pci_write_config_word(ha->pdev, PCI_COMMAND, w); /* PCIe -- adjust Maximum Read Request Size (2048). */ - if (pci_find_capability(ha->pdev, PCI_CAP_ID_EXP)) + if (pci_is_pcie(ha->pdev)) pcie_set_readrq(ha->pdev, 2048); pci_disable_rom(ha->pdev); diff --git a/drivers/scsi/qla2xxx/qla_nx.c b/drivers/scsi/qla2xxx/qla_nx.c index caf627ba7fa..9ce3a8f8754 100644 --- a/drivers/scsi/qla2xxx/qla_nx.c +++ b/drivers/scsi/qla2xxx/qla_nx.c @@ -1620,7 +1620,7 @@ qla82xx_pci_info_str(struct scsi_qla_host *vha, char *str) char lwstr[6]; uint16_t lnk; - pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP); + pcie_reg = pci_pcie_cap(ha->pdev); pci_read_config_word(ha->pdev, pcie_reg + PCI_EXP_LNKSTA, &lnk); ha->link_width = (lnk >> 4) & 0x3f; @@ -2528,7 +2528,7 @@ qla82xx_start_firmware(scsi_qla_host_t *vha) } /* 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); ha->link_width = (lnk >> 4) & 0x3f; diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 6d1d873a20e..fb8cd3847d4 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -482,12 +482,12 @@ qla24xx_pci_info_str(struct scsi_qla_host *vha, char *str) uint32_t pci_bus; int pcie_reg; - pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP); + pcie_reg = pci_pcie_cap(ha->pdev); if (pcie_reg) { char lwstr[6]; uint16_t pcie_lstat, lspeed, lwidth; - pcie_reg += 0x12; + pcie_reg += PCI_EXP_LNKCAP; pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat); lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3); lwidth = (pcie_lstat &