Hi As you can see in the "10. pci_enable_device_bars() and Legacy I/O Port space" of the Documentation/pci.txt, the latest kernel has interfaces for PCI device drivers to tell the kernel which resource the driver want to use, ex. I/O port or MMIO. I've made a patch which makes Emulex lpfc driver legacy I/O port free by using the PCI core changes I mentioned above. The Emulex lpfc driver can handle some of its devices without using I/O port. So this patch changes the driver not to enable/request I/O port region. As a result, the driver can handle its device even when there are huge number of PCI devices being used on the system and no I/O port region assigned to the device. Tomohiro Kusumi Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@xxxxxxxxxxxxxx> --- lpfc_init.c | 10 ++++++---- 1 files changed, 6 insertions(+), 4 deletions(-) diff -uprN linux-2.6.21.orig/drivers/scsi/lpfc/lpfc_init.c linux-2.6.21/drivers/scsi/lpfc/lpfc_init.c --- linux-2.6.21.orig/drivers/scsi/lpfc/lpfc_init.c 2007-04-26 12:08:32.000000000 +0900 +++ linux-2.6.21/drivers/scsi/lpfc/lpfc_init.c 2007-05-09 18:22:10.000000000 +0900 @@ -1419,10 +1419,11 @@ lpfc_pci_probe_one(struct pci_dev *pdev, int error = -ENODEV, retval; int i; uint16_t iotag; + int bars = pci_select_bars(pdev, IORESOURCE_MEM); - if (pci_enable_device(pdev)) + if (pci_enable_device_bars(pdev, bars)) goto out; - if (pci_request_regions(pdev, LPFC_DRIVER_NAME)) + if (pci_request_selected_regions(pdev, bars, LPFC_DRIVER_NAME)) goto out_disable_device; host = scsi_host_alloc(&lpfc_template, sizeof (struct lpfc_hba)); @@ -1734,7 +1735,7 @@ out_put_host: phba->host = NULL; scsi_host_put(host); out_release_regions: - pci_release_regions(pdev); + pci_release_selected_regions(pdev, bars); out_disable_device: pci_disable_device(pdev); out: @@ -1748,6 +1749,7 @@ lpfc_pci_remove_one(struct pci_dev *pdev struct Scsi_Host *host = pci_get_drvdata(pdev); struct lpfc_hba *phba = (struct lpfc_hba *)host->hostdata; unsigned long iflag; + int bars = pci_select_bars(pdev, IORESOURCE_MEM); lpfc_free_sysfs_attr(phba); @@ -1792,7 +1794,7 @@ lpfc_pci_remove_one(struct pci_dev *pdev iounmap(phba->ctrl_regs_memmap_p); iounmap(phba->slim_memmap_p); - pci_release_regions(phba->pcidev); + pci_release_selected_regions(phba->pcidev, bars); pci_disable_device(phba->pcidev); idr_remove(&lpfc_hba_index, phba->brd_no); - 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
