aboutsummaryrefslogtreecommitdiff
path: root/drivers/usb/core/usb.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2019-03-06 16:48:27 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-06 16:48:27 -0800
commitf90d64483ebd394958841f67f8794ab203b319a7 (patch)
tree3da8638603681adfe9bea7897c03ea27b40ef4f4 /drivers/usb/core/usb.c
parent67e79a6dc2664a3ef85113440e60f7aaca3c7815 (diff)
parent1c7cf3d5e1c181caca75012b65252288c18a25f2 (diff)
Merge tag 'usb-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY updates from Greg KH: "Here is the big USB/PHY driver pull request for 5.1-rc1. The usual set of gadget driver updates, phy driver updates, xhci updates, and typec additions. Also included in here are a lot of small cleanups and fixes and driver updates where needed. All of these have been in linux-next for a while with no reported issues" * tag 'usb-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (167 commits) wusb: Remove unnecessary static function ckhdid_printf usb: core: make default autosuspend delay configurable usb: core: Fix typo in description of "authorized_default" usb: chipidea: Refactor USB PHY selection and keep a single PHY usb: chipidea: Grab the (legacy) USB PHY by phandle first usb: chipidea: imx: set power polarity dt-bindings: usb: ci-hdrc-usb2: add property power-active-high usb: chipidea: imx: remove unused header files usb: chipidea: tegra: Fix missed ci_hdrc_remove_device() usb: core: add option of only authorizing internal devices usb: typec: tps6598x: handle block writes separately with plain-I2C adapters usb: xhci: Fix for Enabling USB ROLE SWITCH QUIRK on INTEL_SUNRISEPOINT_LP_XHCI usb: xhci: fix build warning - missing prototype usb: xhci: dbc: Fixing typo error. usb: xhci: remove unused member 'parent' in xhci_regset struct xhci: tegra: Prevent error pointer dereference USB: serial: option: add Telit ME910 ECM composition usb: core: Replace hardcoded check with inline function from usb.h usb: core: skip interfaces disabled in devicetree usb: typec: mux: remove redundant check on variable match ...
Diffstat (limited to 'drivers/usb/core/usb.c')
-rw-r--r--drivers/usb/core/usb.c37
1 files changed, 28 insertions, 9 deletions
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 4ebfbd737905..7fcb9f782931 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -46,8 +46,7 @@
#include <linux/mm.h>
#include <linux/dma-mapping.h>
-#include "usb.h"
-
+#include "hub.h"
const char *usbcore_name = "usbcore";
@@ -65,8 +64,8 @@ int usb_disabled(void)
EXPORT_SYMBOL_GPL(usb_disabled);
#ifdef CONFIG_PM
-static int usb_autosuspend_delay = 2; /* Default delay value,
- * in seconds */
+/* Default delay value, in seconds */
+static int usb_autosuspend_delay = CONFIG_USB_AUTOSUSPEND_DELAY;
module_param_named(autosuspend, usb_autosuspend_delay, int, 0644);
MODULE_PARM_DESC(autosuspend, "default autosuspend delay");
@@ -536,6 +535,27 @@ static unsigned usb_bus_is_wusb(struct usb_bus *bus)
return hcd->wireless;
}
+static bool usb_dev_authorized(struct usb_device *dev, struct usb_hcd *hcd)
+{
+ struct usb_hub *hub;
+
+ if (!dev->parent)
+ return true; /* Root hub always ok [and always wired] */
+
+ switch (hcd->dev_policy) {
+ case USB_DEVICE_AUTHORIZE_NONE:
+ default:
+ return false;
+
+ case USB_DEVICE_AUTHORIZE_ALL:
+ return true;
+
+ case USB_DEVICE_AUTHORIZE_INTERNAL:
+ hub = usb_hub_to_struct_hub(dev->parent);
+ return hub->ports[dev->portnum - 1]->connect_type ==
+ USB_PORT_CONNECT_TYPE_HARD_WIRED;
+ }
+}
/**
* usb_alloc_dev - usb device constructor (usbcore-internal)
@@ -663,12 +683,11 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent,
dev->connect_time = jiffies;
dev->active_duration = -jiffies;
#endif
- if (root_hub) /* Root hub always ok [and always wired] */
- dev->authorized = 1;
- else {
- dev->authorized = !!HCD_DEV_AUTHORIZED(usb_hcd);
+
+ dev->authorized = usb_dev_authorized(dev, usb_hcd);
+ if (!root_hub)
dev->wusb = usb_bus_is_wusb(bus) ? 1 : 0;
- }
+
return dev;
}
EXPORT_SYMBOL_GPL(usb_alloc_dev);