> @@ -476,9 +503,28 @@ static int gnttab_map(unsigned int start_idx, unsigned
> int end_idx)
>
> int gnttab_resume(void)
> {
> - if (max_nr_grant_frames() < nr_grant_frames)
> + unsigned int max_nr_gframes;
> +
> + max_nr_gframes = max_nr_grant_frames();
> + if (max_nr_gframes < nr_grant_frames)
> return -ENOSYS;
> - return gnttab_map(0, nr_grant_frames - 1);
> +
> + if (xen_pv_domain())
> + return gnttab_map(0, nr_grant_frames - 1);
> +
> + if (!hvm_pv_resume_frames) {
> + hvm_pv_resume_frames = alloc_xen_mmio(PAGE_SIZE *
> max_nr_gframes);
> + shared = ioremap(hvm_pv_resume_frames, PAGE_SIZE *
> max_nr_gframes);
> + if (shared == NULL) {
> + printk(KERN_WARNING
> + "Fail to ioremap gnttab share
> frames\n");
I would say: "Failed to ioremap gnttab share frames!\n".
.. snip ..
> + if (request_region(ioaddr, iolen, DRV_NAME) == NULL) {
> + dev_err(&pdev->dev, "I/O resource 0x%lx @ 0x%lx busy\n",
> + iolen, ioaddr);
> + ret = -EBUSY;
> + goto out;
> + }
> +
> + platform_mmio = mmio_addr;
> + platform_mmiolen = mmio_len;
> +
> + if (!xen_have_vector_callback) {
> + ret = xen_allocate_irq(pdev);
> + if (ret) {
> + printk(KERN_WARNING "request_irq failed err=%d\n", ret);
Use dev_warn here.
> + goto out;
> + }
> + callback_via = get_callback_via(pdev);
> + ret = xen_set_callback_via(callback_via);
> + if (ret) {
> + printk(KERN_WARNING
> + "Unable to set the evtchn callback
> err=%d\n", ret);
ditto.
> + goto out;
> + }
> + }
> +
> + ret = gnttab_init();
> + if (ret)
> + goto out;
> + xenbus_probe(NULL);
> +
> +out:
> + if (ret) {
> + release_mem_region(mmio_addr, mmio_len);
> + release_region(ioaddr, iolen);
> + pci_disable_device(pdev);
> + }
> +
> + return ret;
> +}
> +
> +static struct pci_device_id platform_pci_tbl[] __devinitdata = {
> + {PCI_VENDOR_ID_XEN, PCI_DEVICE_ID_XEN_PLATFORM,
> + PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
> + {0,}
> +};
> +
> +MODULE_DEVICE_TABLE(pci, platform_pci_tbl);
> +
> +static struct pci_driver platform_driver = {
> + .name = DRV_NAME,
> + .probe = platform_pci_init,
> + .id_table = platform_pci_tbl,
> +};
> +
> +static int __init platform_pci_module_init(void)
> +{
> + int rc;
> +
> + rc = pci_register_driver(&platform_driver);
> + if (rc) {
> + printk(KERN_INFO DRV_NAME
> + ": No platform pci device model found\n");
No need for that. The pci_register_driver call to ->probe and
its subsequent setup, if it failed, should have displayed the
appropiate error+explanation?
How about just making it:
return pci_register_driver(&platform_driver);
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