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authorLinus Torvalds <torvalds@linux-foundation.org>2015-06-27 01:59:26 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-27 01:59:26 +0300
commit2a298679b41199ae742a77ce69766385dffe816f (patch)
tree93a23c0d828ccca7053f604dbfcdd4d3278972b3 /drivers/usb/host/xhci.c
parent8c7febe83915332276cab49e89f6580bb963fb9a (diff)
parent50641056d833813b71b0ad51823f7ded8dd62e7f (diff)
downloadlinux-2a298679b41199ae742a77ce69766385dffe816f.tar.xz
Merge tag 'usb-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB updates from Greg KH: "Here's the big USB patchset for 4.2-rc1. As is normal these days, the majority of changes are in the gadget drivers, with a bunch of other small driver changes. All of these have been in linux-next with no reported issues" * tag 'usb-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (175 commits) usb: dwc3: Use ASCII space in Kconfig usb: chipidea: add work-around for Marvell HSIC PHY startup usb: chipidea: allow multiple instances to use default ci_default_pdata dt-bindings: Consolidate ChipIdea USB ci13xxx bindings phy: add Marvell HSIC 28nm PHY phy: Add Marvell USB 2.0 OTG 28nm PHY dt-bindings: Add Marvell PXA1928 USB and HSIC PHY bindings USB: ssb: use devm_kzalloc USB: ssb: fix error handling in ssb_hcd_create_pdev() usb: isp1760: check for null return from kzalloc cdc-acm: Add support of ATOL FPrint fiscal printers usb: chipidea: usbmisc_imx: Remove unneeded semicolon USB: usbtmc: add device quirk for Rigol DS6104 USB: serial: mos7840: Use setup_timer phy: twl4030-usb: add ABI documentation phy: twl4030-usb: remove incorrect pm_runtime_get_sync() in probe function. phy: twl4030-usb: remove pointless 'suspended' test in 'suspend' callback. phy: twl4030-usb: make runtime pm more reliable. drivers:usb:fsl: Fix compilation error for fsl ehci drv usb: renesas_usbhs: Don't disable the pipe if Control write status stage ...
Diffstat (limited to 'drivers/usb/host/xhci.c')
-rw-r--r--drivers/usb/host/xhci.c44
1 files changed, 23 insertions, 21 deletions
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 36bf089b708f..7da0d6043d33 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -660,12 +660,6 @@ static void xhci_only_stop_hcd(struct usb_hcd *hcd)
spin_lock_irq(&xhci->lock);
xhci_halt(xhci);
-
- /* The shared_hcd is going to be deallocated shortly (the USB core only
- * calls this function when allocation fails in usb_add_hcd(), or
- * usb_remove_hcd() is called). So we need to unset xHCI's pointer.
- */
- xhci->shared_hcd = NULL;
spin_unlock_irq(&xhci->lock);
}
@@ -897,6 +891,9 @@ int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup)
struct usb_hcd *hcd = xhci_to_hcd(xhci);
u32 command;
+ if (!hcd->state)
+ return 0;
+
if (hcd->state != HC_STATE_SUSPENDED ||
xhci->shared_hcd->state != HC_STATE_SUSPENDED)
return -EINVAL;
@@ -983,6 +980,9 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
int retval = 0;
bool comp_timer_running = false;
+ if (!hcd->state)
+ return 0;
+
/* Wait a bit if either of the roothubs need to settle from the
* transition into bus suspend.
*/
@@ -3769,8 +3769,6 @@ disable_slot:
/*
* Issue an Address Device command and optionally send a corresponding
* SetAddress request to the device.
- * We should be protected by the usb_address0_mutex in hub_wq's hub_port_init,
- * so we should only issue and wait on one address command at the same time.
*/
static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev,
enum xhci_setup_dev setup)
@@ -4842,10 +4840,7 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
hcd->self.no_stop_on_short = 1;
if (usb_hcd_is_primary_hcd(hcd)) {
- xhci = kzalloc(sizeof(struct xhci_hcd), GFP_KERNEL);
- if (!xhci)
- return -ENOMEM;
- *((struct xhci_hcd **) hcd->hcd_priv) = xhci;
+ xhci = hcd_to_xhci(hcd);
xhci->main_hcd = hcd;
/* Mark the first roothub as being USB 2.0.
* The xHCI driver will register the USB 3.0 roothub.
@@ -4894,13 +4889,13 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
/* Make sure the HC is halted. */
retval = xhci_halt(xhci);
if (retval)
- goto error;
+ return retval;
xhci_dbg(xhci, "Resetting HCD\n");
/* Reset the internal HC memory state and registers. */
retval = xhci_reset(xhci);
if (retval)
- goto error;
+ return retval;
xhci_dbg(xhci, "Reset complete\n");
/* Set dma_mask and coherent_dma_mask to 64-bits,
@@ -4915,16 +4910,13 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
/* Initialize HCD and host controller data structures. */
retval = xhci_init(hcd);
if (retval)
- goto error;
+ return retval;
xhci_dbg(xhci, "Called HCD init\n");
xhci_info(xhci, "hcc params 0x%08x hci version 0x%x quirks 0x%08x\n",
xhci->hcc_params, xhci->hci_version, xhci->quirks);
return 0;
-error:
- kfree(xhci);
- return retval;
}
EXPORT_SYMBOL_GPL(xhci_gen_setup);
@@ -4989,11 +4981,21 @@ static const struct hc_driver xhci_hc_driver = {
.find_raw_port_number = xhci_find_raw_port_number,
};
-void xhci_init_driver(struct hc_driver *drv, int (*setup_fn)(struct usb_hcd *))
+void xhci_init_driver(struct hc_driver *drv,
+ const struct xhci_driver_overrides *over)
{
- BUG_ON(!setup_fn);
+ BUG_ON(!over);
+
+ /* Copy the generic table to drv then apply the overrides */
*drv = xhci_hc_driver;
- drv->reset = setup_fn;
+
+ if (over) {
+ drv->hcd_priv_size += over->extra_priv_size;
+ if (over->reset)
+ drv->reset = over->reset;
+ if (over->start)
+ drv->start = over->start;
+ }
}
EXPORT_SYMBOL_GPL(xhci_init_driver);