/* * SuperH EHCI host controller driver * * Copyright (C) 2010 Paul Mundt * * Based on ohci-sh.c and ehci-atmel.c. * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. */ #include #include #include struct ehci_sh_priv { struct clk *iclk, *fclk; struct usb_hcd *hcd; }; static int ehci_sh_reset(struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); ehci->caps = hcd->regs; return ehci_setup(hcd); } static const struct hc_driver ehci_sh_hc_driver = { .description = hcd_name, .product_desc = "SuperH EHCI", .hcd_priv_size = sizeof(struct ehci_hcd), /* * generic hardware linkage */ .irq = ehci_irq, .flags = HCD_USB2 | HCD_MEMORY | HCD_BH, /* * basic lifecycle operations */ .reset = ehci_sh_reset, .start = ehci_run, .stop = ehci_stop, .shutdown = ehci_shutdown, /* * managing i/o requests and associated device resources */ .urb_enqueue = ehci_urb_enqueue, .urb_dequeue = ehci_urb_dequeue, .endpoint_disable = ehci_endpoint_disable, .endpoint_reset = ehci_endpoint_reset, /* * scheduling support */ .get_frame_number = ehci_get_frame, /* * root hub support */ .hub_status_data = ehci_hub_status_data, .hub_control = ehci_hub_control, #ifdef CONFIG_PM .bus_suspend = ehci_bus_suspend, .bus_resume = ehci_bus_resume, #endif .relinquish_port = ehci_relinquish_port, .port_handed_over = ehci_port_handed_over, .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; static int ehci_hcd_sh_probe(struct platform_device *pdev) { struct resource *res; struct ehci_sh_priv *priv; struct ehci_sh_platdata *pdata; struct usb_hcd *hcd; int irq, ret; if (usb_disabled()) return -ENODEV; irq = platform_get_irq(pdev, 0); if (irq <= 0) { dev_err(&pdev->dev, "Found HC with no IRQ. Check %s setup!\n", dev_name(&pdev->dev)); ret = -ENODEV; goto fail_create_hcd; } pdata = dev_get_platdata(&pdev->dev); /* initialize hcd */ hcd = usb_create_hcd(&ehci_sh_hc_driver, &pdev->dev, dev_name(&pdev->dev)); if (!hcd) { ret = -ENOMEM; goto fail_create_hcd; } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); hcd->regs = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(hcd->regs)) { ret = PTR_ERR(hcd->regs); goto fail_request_resource; } hcd->rsrc_start = res->start; hcd->rsrc_len = resource_size(res); priv = devm_kzalloc(&pdev->dev, sizeof(struct ehci_sh_priv), GFP_KERNEL); if (!priv) { ret = -ENOMEM; goto fail_request_resource; } /* These are optional, we don't care if they fail */ priv->fclk = devm_clk_get(&pdev->dev, "usb_fck"); if (IS_ERR(priv->fclk)) priv->fclk = NULL; priv->iclk = devm_clk_get(&pdev->dev, "usb_ick"); if (IS_ERR(priv->iclk)) priv->iclk = NULL; clk_enable(priv->fclk); clk_enable(priv->iclk); if (pdata && pdata->phy_init) pdata->phy_init(); ret = usb_add_hcd(hcd, irq, IRQF_SHARED); if (ret != 0) { dev_err(&pdev->dev, "Failed to add hcd"); goto fail_add_hcd; } device_wakeup_enable(hcd->self.controller); priv->hcd = hcd; platform_set_drvdata(pdev, priv); return ret; fail_add_hcd: clk_disable(priv->iclk); clk_disable(priv->fclk); fail_request_resource: usb_put_hcd(hcd); fail_create_hcd: dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), ret); return ret; } static int ehci_hcd_sh_remove(struct platform_device *pdev) { struct ehci_sh_priv *priv = platform_get_drvdata(pdev); struct usb_hcd *hcd = priv->hcd; usb_remove_hcd(hcd); usb_put_hcd(hcd); clk_disable(priv->fclk); clk_disable(priv->iclk); return 0; } static void ehci_hcd_sh_shutdown(struct platform_device *pdev) { struct ehci_sh_priv *priv = platform_get_drvdata(pdev); struct usb_hcd *hcd = priv->hcd; if (hcd->driver->shutdown) hcd->driver->shutdown(hcd); } static struct platform_driver ehci_hcd_sh_driver = { .probe = ehci_hcd_sh_probe, .remove = ehci_hcd_sh_remove, .shutdown = ehci_hcd_sh_shutdown, .driver = { .name = "sh_ehci", }, }; MODULE_ALIAS("platform:sh_ehci"); selected='selected'>unified
authorWillem de Bruijn <willemb@google.com>2017-01-02 17:19:40 -0500
committerPablo Neira Ayuso <pablo@netfilter.org>2017-01-09 17:24:53 +0100
commitf32815d21d4d8287336fb9cef4d2d9e0866214c2 (patch)
treeeedb12ee6e68b344d1ffb5df9615981394e8d07b /net/8021q/vlanproc.c
parent4cc4b72c136a45aeccd86f66b0859b148b47d881 (diff)
xtables: add xt_match, xt_target and data copy_to_user functions
xt_entry_target, xt_entry_match and their private data may contain kernel data. Introduce helper functions xt_match_to_user, xt_target_to_user and xt_data_to_user that copy only the expected fields. These replace existing logic that calls copy_to_user on entire structs, then overwrites select fields. Private data is defined in xt_match and xt_target. All matches and targets that maintain kernel data store this at the tail of their private structure. Extend xt_match and xt_target with .usersize to limit how many bytes of data are copied. The remainder is cleared. If compatsize is specified, usersize can only safely be used if all fields up to usersize use platform-independent types. Otherwise, the compat_to_user callback must be defined. This patch does not yet enable the support logic. Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net/8021q/vlanproc.c')