On Thu, Sep 5, 2013 at 12:55 AM, Yijing Wang <wangyijing@xxxxxxxxxx> wrote: > v1->v2: use pcie_get/set_readrq to simplify code > a lot suggestd by Bjorn. > > Use pcie_get_readrq()/pcie_set_readrq() to simplify > code. Very similar to a patch I sent out in 2011 http://www.spinics.net/lists/linux-scsi/msg52990.html Hopefully this one gets pulled in. > Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx> > Cc: Jiang Liu <jiang.liu@xxxxxxxxxx> > Cc: Anil Gurumurthy <agurumur@xxxxxxxxxxx> > Cc: Vijaya Mohan Guvva <vmohan@xxxxxxxxxxx> > Cc: "James E.J. Bottomley" <JBottomley@xxxxxxxxxxxxx> > Cc: linux-scsi@xxxxxxxxxxxxxxx > Cc: linux-kernel@xxxxxxxxxxxxxxx > --- > drivers/scsi/bfa/bfad.c | 48 +++++----------------------------------------- > 1 files changed, 6 insertions(+), 42 deletions(-) > > diff --git a/drivers/scsi/bfa/bfad.c b/drivers/scsi/bfa/bfad.c > index f8ca7be..0a458db 100644 > --- a/drivers/scsi/bfa/bfad.c > +++ b/drivers/scsi/bfa/bfad.c > @@ -766,50 +766,14 @@ bfad_pci_init(struct pci_dev *pdev, struct bfad_s *bfad) > bfad->pcidev = pdev; > > /* Adjust PCIe Maximum Read Request Size */ > - if (pcie_max_read_reqsz > 0) { > - int pcie_cap_reg; > - u16 pcie_dev_ctl; > - u16 mask = 0xffff; > - > - switch (pcie_max_read_reqsz) { > - case 128: > - mask = 0x0; > - break; > - case 256: > - mask = 0x1000; > - break; > - case 512: > - mask = 0x2000; > - break; > - case 1024: > - mask = 0x3000; > - break; > - case 2048: > - mask = 0x4000; > - break; > - case 4096: > - mask = 0x5000; > - break; > - default: > - break; > - } > - > - pcie_cap_reg = pci_find_capability(pdev, PCI_CAP_ID_EXP); > - if (mask != 0xffff && pcie_cap_reg) { > - pcie_cap_reg += 0x08; > - pci_read_config_word(pdev, pcie_cap_reg, &pcie_dev_ctl); > - if ((pcie_dev_ctl & 0x7000) != mask) { > - printk(KERN_WARNING "BFA[%s]: " > + if (pcie_max_read_reqsz > 0 && pci_is_pcie(pdev)) { > + int max_rq = pcie_get_readrq(pdev); > + if (max_rq > 128 && max_rq < 4096 && is_power_of_2(max_rq)) > + printk(KERN_WARNING "BFA[%s]: " > "pcie_max_read_request_size is %d, " > - "reset to %d\n", bfad->pci_name, > - (1 << ((pcie_dev_ctl & 0x7000) >> 12)) << 7, > + "reset to %d\n", bfad->pci_name, max_rq, > pcie_max_read_reqsz); > - > - pcie_dev_ctl &= ~0x7000; > - pci_write_config_word(pdev, pcie_cap_reg, > - pcie_dev_ctl | mask); > - } > - } > + pcie_set_readrq(pdev, pcie_max_read_reqsz); > } > > pci_save_state(pdev); > -- > 1.7.1 > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-scsi" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
