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Merge tag 'usb-4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Browse Source 
Pull USB updates from Greg KH:
 "Here is the big USB drivers update for 4.5-rc1.

  Lots of gadget driver updates and fixes, like usual, and a mix of
  other USB driver updates as well.  Full details in the shortlog.  All
  of these have been in linux-next for a while"

* tag 'usb-4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (191 commits)
  MAINTAINERS: change my email address
  USB: usbmon: remove assignment from IS_ERR argument
  USB: mxu11x0: drop redundant function name from error messages
  USB: mxu11x0: fix debug-message typos
  USB: mxu11x0: rename usb-serial driver
  USB: mxu11x0: fix modem-control handling on B0-transitions
  USB: mxu11x0: fix memory leak on firmware download
  USB: mxu11x0: fix memory leak in port-probe error path
  USB: serial: add Moxa UPORT 11x0 driver
  USB: cp210x: add ID for ELV Marble Sound Board 1
  usb: chipidea: otg: use usb autosuspend to suspend bus for HNP
  usb: chipidea: host: set host to be null after hcd is freed
  usb: chipidea: removing of_find_property
  usb: chipidea: implement platform shutdown callback
  usb: chipidea: clean up CONFIG_USB_CHIPIDEA_DEBUG reference
  usb: chipidea: delete static debug support
  usb: chipidea: support debugfs without CONFIG_USB_CHIPIDEA_DEBUG
  usb: chipidea: udc: improve error handling on _hardware_enqueue
  usb: chipidea: udc: _ep_queue and _hw_queue cleanup
  usb: dwc3: of-simple: fix build warning on !PM
  ...
This commit is contained in:
Linus Torvalds
2016-01-13 09:26:40 -08:00
parent 67990608c8 60d77b3d22
commit 237f38c3b3
174 changed files with 9147 additions and 2053 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
drivers/usb/core/devio.c
View File

@@ -100,6 +100,11 @@ static bool usbfs_snoop;
module_param(usbfs_snoop, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(usbfs_snoop, "true to log all usbfs traffic");
static unsigned usbfs_snoop_max = 65536;
module_param(usbfs_snoop_max, uint, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(usbfs_snoop_max,
"maximum number of bytes to print while snooping");
#define snoop(dev, format, arg...) \
do { \
if (usbfs_snoop) \
@@ -368,6 +373,7 @@ static void snoop_urb(struct usb_device *udev,
ep, t, d, length, timeout_or_status);
}
data_len = min(data_len, usbfs_snoop_max);
if (data && data_len > 0) {
print_hex_dump(KERN_DEBUG, "data: ", DUMP_PREFIX_NONE, 32, 1,
data, data_len, 1);
@@ -378,7 +384,8 @@ static void snoop_urb_data(struct urb *urb, unsigned len)
{
int i, size;
if (!usbfs_snoop)
len = min(len, usbfs_snoop_max);
if (!usbfs_snoop || len == 0)
return;
if (urb->num_sgs == 0) {
@@ -1685,8 +1692,12 @@ static struct async *reap_as(struct usb_dev_state *ps)
static int proc_reapurb(struct usb_dev_state *ps, void __user *arg)
{
struct async *as = reap_as(ps);
if (as) {
int retval = processcompl(as, (void __user * __user *)arg);
int retval;
snoop(&ps->dev->dev, "reap %p\n", as->userurb);
retval = processcompl(as, (void __user * __user *)arg);
free_async(as);
return retval;
}
@@ -1702,6 +1713,7 @@ static int proc_reapurbnonblock(struct usb_dev_state *ps, void __user *arg)
as = async_getcompleted(ps);
if (as) {
snoop(&ps->dev->dev, "reap %p\n", as->userurb);
retval = processcompl(as, (void __user * __user *)arg);
free_async(as);
} else {
@@ -1828,8 +1840,12 @@ static int processcompl_compat(struct async *as, void __user * __user *arg)
static int proc_reapurb_compat(struct usb_dev_state *ps, void __user *arg)
{
struct async *as = reap_as(ps);
if (as) {
int retval = processcompl_compat(as, (void __user * __user *)arg);
int retval;
snoop(&ps->dev->dev, "reap %p\n", as->userurb);
retval = processcompl_compat(as, (void __user * __user *)arg);
free_async(as);
return retval;
}
@@ -1845,6 +1861,7 @@ static int proc_reapurbnonblock_compat(struct usb_dev_state *ps, void __user *ar
as = async_getcompleted(ps);
if (as) {
snoop(&ps->dev->dev, "reap %p\n", as->userurb);
retval = processcompl_compat(as, (void __user * __user *)arg);
free_async(as);
} else {
@@ -2249,7 +2266,7 @@ static long usbdev_do_ioctl(struct file *file, unsigned int cmd,
#endif
case USBDEVFS_DISCARDURB:
snoop(&dev->dev, "%s: DISCARDURB\n", __func__);
snoop(&dev->dev, "%s: DISCARDURB %p\n", __func__, p);
ret = proc_unlinkurb(ps, p);
break;

4
drivers/usb/core/hcd.c
View File

@@ -3000,7 +3000,7 @@ EXPORT_SYMBOL_GPL(usb_hcd_platform_shutdown);
#if defined(CONFIG_USB_MON) || defined(CONFIG_USB_MON_MODULE)
struct usb_mon_operations *mon_ops;
const struct usb_mon_operations *mon_ops;
/*
* The registration is unlocked.
@@ -3010,7 +3010,7 @@ struct usb_mon_operations *mon_ops;
* symbols from usbcore, usbcore gets referenced and cannot be unloaded first.
*/
int usb_mon_register (struct usb_mon_operations *ops)
int usb_mon_register(const struct usb_mon_operations *ops)
{
if (mon_ops)

68
drivers/usb/core/hub.c
View File

@@ -3324,7 +3324,7 @@ static int finish_port_resume(struct usb_device *udev)
/*
* There are some SS USB devices which take longer time for link training.
* XHCI specs 4.19.4 says that when Link training is successful, port
* sets CSC bit to 1. So if SW reads port status before successful link
* sets CCS bit to 1. So if SW reads port status before successful link
* training, then it will not find device to be present.
* USB Analyzer log with such buggy devices show that in some cases
* device switch on the RX termination after long delay of host enabling
@@ -3335,14 +3335,17 @@ static int finish_port_resume(struct usb_device *udev)
* routine implements a 2000 ms timeout for link training. If in a case
* link trains before timeout, loop will exit earlier.
*
* There are also some 2.0 hard drive based devices and 3.0 thumb
* drives that, when plugged into a 2.0 only port, take a long
* time to set CCS after VBUS enable.
*
* FIXME: If a device was connected before suspend, but was removed
* while system was asleep, then the loop in the following routine will
* only exit at timeout.
*
* This routine should only be called when persist is enabled for a SS
* device.
* This routine should only be called when persist is enabled.
*/
static int wait_for_ss_port_enable(struct usb_device *udev,
static int wait_for_connected(struct usb_device *udev,
struct usb_hub *hub, int *port1,
u16 *portchange, u16 *portstatus)
{
@@ -3355,6 +3358,7 @@ static int wait_for_ss_port_enable(struct usb_device *udev,
delay_ms += 20;
status = hub_port_status(hub, *port1, portstatus, portchange);
}
dev_dbg(&udev->dev, "Waited %dms for CONNECT\n", delay_ms);
return status;
}
@@ -3454,8 +3458,8 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg)
}
}
if (udev->persist_enabled && hub_is_superspeed(hub->hdev))
status = wait_for_ss_port_enable(udev, hub, &port1, &portchange,
if (udev->persist_enabled)
status = wait_for_connected(udev, hub, &port1, &portchange,
&portstatus);
status = check_port_resume_type(udev,
@@ -3895,17 +3899,30 @@ static void usb_enable_link_state(struct usb_hcd *hcd, struct usb_device *udev,
return;
}
if (usb_set_lpm_timeout(udev, state, timeout))
if (usb_set_lpm_timeout(udev, state, timeout)) {
/* If we can't set the parent hub U1/U2 timeout,
* device-initiated LPM won't be allowed either, so let the xHCI
* host know that this link state won't be enabled.
*/
hcd->driver->disable_usb3_lpm_timeout(hcd, udev, state);
} else {
/* Only a configured device will accept the Set Feature
* U1/U2_ENABLE
*/
if (udev->actconfig)
usb_set_device_initiated_lpm(udev, state, true);
/* Only a configured device will accept the Set Feature U1/U2_ENABLE */
else if (udev->actconfig)
usb_set_device_initiated_lpm(udev, state, true);
/* As soon as usb_set_lpm_timeout(timeout) returns 0, the
* hub-initiated LPM is enabled. Thus, LPM is enabled no
* matter the result of usb_set_device_initiated_lpm().
* The only difference is whether device is able to initiate
* LPM.
*/
if (state == USB3_LPM_U1)
udev->usb3_lpm_u1_enabled = 1;
else if (state == USB3_LPM_U2)
udev->usb3_lpm_u2_enabled = 1;
}
}
/*
@@ -3945,6 +3962,18 @@ static int usb_disable_link_state(struct usb_hcd *hcd, struct usb_device *udev,
dev_warn(&udev->dev, "Could not disable xHCI %s timeout, "
"bus schedule bandwidth may be impacted.\n",
usb3_lpm_names[state]);
/* As soon as usb_set_lpm_timeout(0) return 0, hub initiated LPM
* is disabled. Hub will disallows link to enter U1/U2 as well,
* even device is initiating LPM. Hence LPM is disabled if hub LPM
* timeout set to 0, no matter device-initiated LPM is disabled or
* not.
*/
if (state == USB3_LPM_U1)
udev->usb3_lpm_u1_enabled = 0;
else if (state == USB3_LPM_U2)
udev->usb3_lpm_u2_enabled = 0;
return 0;
}
@@ -3979,8 +4008,6 @@ int usb_disable_lpm(struct usb_device *udev)
if (usb_disable_link_state(hcd, udev, USB3_LPM_U2))
goto enable_lpm;
udev->usb3_lpm_enabled = 0;
return 0;
enable_lpm:
@@ -4017,6 +4044,8 @@ EXPORT_SYMBOL_GPL(usb_unlocked_disable_lpm);
void usb_enable_lpm(struct usb_device *udev)
{
struct usb_hcd *hcd;
struct usb_hub *hub;
struct usb_port *port_dev;
if (!udev || !udev->parent ||
udev->speed != USB_SPEED_SUPER ||
@@ -4036,10 +4065,17 @@ void usb_enable_lpm(struct usb_device *udev)
if (udev->lpm_disable_count > 0)
return;
usb_enable_link_state(hcd, udev, USB3_LPM_U1);
usb_enable_link_state(hcd, udev, USB3_LPM_U2);
hub = usb_hub_to_struct_hub(udev->parent);
if (!hub)
return;
udev->usb3_lpm_enabled = 1;
port_dev = hub->ports[udev->portnum - 1];
if (port_dev->usb3_lpm_u1_permit)
usb_enable_link_state(hcd, udev, USB3_LPM_U1);
if (port_dev->usb3_lpm_u2_permit)
usb_enable_link_state(hcd, udev, USB3_LPM_U2);
}
EXPORT_SYMBOL_GPL(usb_enable_lpm);

5
drivers/usb/core/hub.h
View File

@@ -92,6 +92,8 @@ struct usb_hub {
* @status_lock: synchronize port_event() vs usb_port_{suspend|resume}
* @portnum: port index num based one
* @is_superspeed cache super-speed status
* @usb3_lpm_u1_permit: whether USB3 U1 LPM is permitted.
* @usb3_lpm_u2_permit: whether USB3 U2 LPM is permitted.
*/
struct usb_port {
struct usb_device *child;
@@ -104,6 +106,8 @@ struct usb_port {
struct mutex status_lock;
u8 portnum;
unsigned int is_superspeed:1;
unsigned int usb3_lpm_u1_permit:1;
unsigned int usb3_lpm_u2_permit:1;
};
#define to_usb_port(_dev) \
@@ -155,4 +159,3 @@ static inline int hub_port_debounce_be_stable(struct usb_hub *hub,
{
return hub_port_debounce(hub, port1, false);
}

89
drivers/usb/core/port.c
View File

@@ -50,6 +50,72 @@ static ssize_t connect_type_show(struct device *dev,
}
static DEVICE_ATTR_RO(connect_type);
static ssize_t usb3_lpm_permit_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct usb_port *port_dev = to_usb_port(dev);
const char *p;
if (port_dev->usb3_lpm_u1_permit) {
if (port_dev->usb3_lpm_u2_permit)
p = "u1_u2";
else
p = "u1";
} else {
if (port_dev->usb3_lpm_u2_permit)
p = "u2";
else
p = "0";
}
return sprintf(buf, "%s\n", p);
}
static ssize_t usb3_lpm_permit_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct usb_port *port_dev = to_usb_port(dev);
struct usb_device *udev = port_dev->child;
struct usb_hcd *hcd;
if (!strncmp(buf, "u1_u2", 5)) {
port_dev->usb3_lpm_u1_permit = 1;
port_dev->usb3_lpm_u2_permit = 1;
} else if (!strncmp(buf, "u1", 2)) {
port_dev->usb3_lpm_u1_permit = 1;
port_dev->usb3_lpm_u2_permit = 0;
} else if (!strncmp(buf, "u2", 2)) {
port_dev->usb3_lpm_u1_permit = 0;
port_dev->usb3_lpm_u2_permit = 1;
} else if (!strncmp(buf, "0", 1)) {
port_dev->usb3_lpm_u1_permit = 0;
port_dev->usb3_lpm_u2_permit = 0;
} else
return -EINVAL;
/* If device is connected to the port, disable or enable lpm
* to make new u1 u2 setting take effect immediately.
*/
if (udev) {
hcd = bus_to_hcd(udev->bus);
if (!hcd)
return -EINVAL;
usb_lock_device(udev);
mutex_lock(hcd->bandwidth_mutex);
if (!usb_disable_lpm(udev))
usb_enable_lpm(udev);
mutex_unlock(hcd->bandwidth_mutex);
usb_unlock_device(udev);
}
return count;
}
static DEVICE_ATTR_RW(usb3_lpm_permit);
static struct attribute *port_dev_attrs[] = {
&dev_attr_connect_type.attr,
NULL,
@@ -64,6 +130,21 @@ static const struct attribute_group *port_dev_group[] = {
NULL,
};
static struct attribute *port_dev_usb3_attrs[] = {
&dev_attr_usb3_lpm_permit.attr,
NULL,
};
static struct attribute_group port_dev_usb3_attr_grp = {
.attrs = port_dev_usb3_attrs,
};
static const struct attribute_group *port_dev_usb3_group[] = {
&port_dev_attr_grp,
&port_dev_usb3_attr_grp,
NULL,
};
static void usb_port_device_release(struct device *dev)
{
struct usb_port *port_dev = to_usb_port(dev);
@@ -401,6 +482,7 @@ static void find_and_link_peer(struct usb_hub *hub, int port1)
int usb_hub_create_port_device(struct usb_hub *hub, int port1)
{
struct usb_port *port_dev;
struct usb_device *hdev = hub->hdev;
int retval;
port_dev = kzalloc(sizeof(*port_dev), GFP_KERNEL);
@@ -417,7 +499,12 @@ int usb_hub_create_port_device(struct usb_hub *hub, int port1)
port_dev->portnum = port1;
set_bit(port1, hub->power_bits);
port_dev->dev.parent = hub->intfdev;
port_dev->dev.groups = port_dev_group;
if (hub_is_superspeed(hdev)) {
port_dev->usb3_lpm_u1_permit = 1;
port_dev->usb3_lpm_u2_permit = 1;
port_dev->dev.groups = port_dev_usb3_group;
} else
port_dev->dev.groups = port_dev_group;
port_dev->dev.type = &usb_port_device_type;
port_dev->dev.driver = &usb_port_driver;
if (hub_is_superspeed(hub->hdev))

31
drivers/usb/core/sysfs.c
View File

@@ -531,7 +531,7 @@ static ssize_t usb2_lpm_besl_store(struct device *dev,
}
static DEVICE_ATTR_RW(usb2_lpm_besl);
static ssize_t usb3_hardware_lpm_show(struct device *dev,
static ssize_t usb3_hardware_lpm_u1_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct usb_device *udev = to_usb_device(dev);
@@ -539,7 +539,7 @@ static ssize_t usb3_hardware_lpm_show(struct device *dev,
usb_lock_device(udev);
if (udev->usb3_lpm_enabled)
if (udev->usb3_lpm_u1_enabled)
p = "enabled";
else
p = "disabled";
@@ -548,7 +548,26 @@ static ssize_t usb3_hardware_lpm_show(struct device *dev,
return sprintf(buf, "%s\n", p);
}
static DEVICE_ATTR_RO(usb3_hardware_lpm);
static DEVICE_ATTR_RO(usb3_hardware_lpm_u1);
static ssize_t usb3_hardware_lpm_u2_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct usb_device *udev = to_usb_device(dev);
const char *p;
usb_lock_device(udev);
if (udev->usb3_lpm_u2_enabled)
p = "enabled";
else
p = "disabled";
usb_unlock_device(udev);
return sprintf(buf, "%s\n", p);
}
static DEVICE_ATTR_RO(usb3_hardware_lpm_u2);
static struct attribute *usb2_hardware_lpm_attr[] = {
&dev_attr_usb2_hardware_lpm.attr,
@@ -562,7 +581,8 @@ static struct attribute_group usb2_hardware_lpm_attr_group = {
};
static struct attribute *usb3_hardware_lpm_attr[] = {
&dev_attr_usb3_hardware_lpm.attr,
&dev_attr_usb3_hardware_lpm_u1.attr,
&dev_attr_usb3_hardware_lpm_u2.attr,
NULL,
};
static struct attribute_group usb3_hardware_lpm_attr_group = {
@@ -592,7 +612,8 @@ static int add_power_attributes(struct device *dev)
if (udev->usb2_hw_lpm_capable == 1)
rc = sysfs_merge_group(&dev->kobj,
&usb2_hardware_lpm_attr_group);
if (udev->lpm_capable == 1)
if (udev->speed == USB_SPEED_SUPER &&
udev->lpm_capable == 1)
rc = sysfs_merge_group(&dev->kobj,
&usb3_hardware_lpm_attr_group);
}

5
drivers/usb/core/usb.c
View File

@@ -49,12 +49,7 @@ const char *usbcore_name = "usbcore";
static bool nousb; /* Disable USB when built into kernel image */
/* To disable USB, kernel command line is 'nousb' not 'usbcore.nousb' */
#ifdef MODULE
module_param(nousb, bool, 0444);
#else
core_param(nousb, nousb, bool, 0444);
#endif
/*
* for external read access to <nousb>