1. 16 Mar, 2018 6 commits
  2. 12 Mar, 2018 2 commits
    • Greg Kroah-Hartman's avatar
      Revert "usb: core: Add "quirks" parameter for usbcore" · 95713fb8
      Greg Kroah-Hartman authored
      This reverts commit b27560e4 as it
      breaks the build for some arches :(
      Reported-by: default avatarkbuild test robot <fengguang.wu@intel.com>
      Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      
      diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
      index 1d1d53f85ddd..70a7398c20e2 100644
      --- a/Documentation/admin-guide/kernel-parameters.txt
      +++ b/Documentation/admin-guide/kernel-parameters.txt
      @@ -4368,6 +4368,61 @@
      
       	usbcore.nousb	[USB] Disable the USB subsystem
      
      +	usbcore.quirks=
      +			[USB] A list of quirks entries to supplement or
      +			override the built-in usb core quirk list.  List
      +			entries are separated by commas.  Each entry has
      +			the form VID:PID:Flags where VID and PID are Vendor
      +			and Product ID values (4-digit hex numbers) and
      +			Flags is a set of characters, each corresponding
      +			to a common usb core quirk flag as follows:
      +				a = USB_QUIRK_STRING_FETCH_255 (string
      +					descriptors must not be fetched using
      +					a 255-byte read);
      +				b = USB_QUIRK_RESET_RESUME (device can't resume
      +					correctly so reset it instead);
      +				c = USB_QUIRK_NO_SET_INTF (device can't handle
      +					Set-Interface requests);
      +				d = USB_QUIRK_CONFIG_INTF_STRINGS (device can't
      +					handle its Configuration or Interface
      +					strings);
      +				e = USB_QUIRK_RESET (device can't be reset
      +					(e.g morph devices), don't use reset);
      +				f = USB_QUIRK_HONOR_BNUMINTERFACES (device has
      +					more interface descriptions than the
      +					bNumInterfaces count, and can't handle
      +					talking to these interfaces);
      +				g = USB_QUIRK_DELAY_INIT (device needs a pause
      +					during initialization, after we read
      +					the device descriptor);
      +				h = USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL (For
      +					high speed and super speed interrupt
      +					endpoints, the USB 2.0 and USB 3.0 spec
      +					require the interval in microframes (1
      +					microframe = 125 microseconds) to be
      +					calculated as interval = 2 ^
      +					(bInterval-1).
      +					Devices with this quirk report their
      +					bInterval as the result of this
      +					calculation instead of the exponent
      +					variable used in the calculation);
      +				i = USB_QUIRK_DEVICE_QUALIFIER (device can't
      +					handle device_qualifier descriptor
      +					requests);
      +				j = USB_QUIRK_IGNORE_REMOTE_WAKEUP (device
      +					generates spurious wakeup, ignore
      +					remote wakeup capability);
      +				k = USB_QUIRK_NO_LPM (device can't handle Link
      +					Power Management);
      +				l = USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL
      +					(Device reports its bInterval as linear
      +					frames instead of the USB 2.0
      +					calculation);
      +				m = USB_QUIRK_DISCONNECT_SUSPEND (Device needs
      +					to be disconnected before suspend to
      +					prevent spurious wakeup)
      +			Example: quirks=0781:5580:bk,0a5c:5834:gij
      +
       	usbhid.mousepoll=
       			[USBHID] The interval which mice are to be polled at.
      
      diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
      index f4a548471f0f..42faaeead81b 100644
      --- a/drivers/usb/core/quirks.c
      +++ b/drivers/usb/core/quirks.c
      @@ -11,6 +11,143 @@
       #include <linux/usb/hcd.h>
       #include "usb.h"
      
      +struct quirk_entry {
      +	u16 vid;
      +	u16 pid;
      +	u32 flags;
      +};
      +
      +static DEFINE_MUTEX(quirk_mutex);
      +
      +static struct quirk_entry *quirk_list;
      +static unsigned int quirk_count;
      +
      +static char quirks_param[128];
      +
      +static int quirks_param_set(const char *val, const struct kernel_param *kp)
      +{
      +	char *p, *field;
      +	u16 vid, pid;
      +	u32 flags;
      +	size_t i;
      +
      +	mutex_lock(&quirk_mutex);
      +
      +	if (!val || !*val) {
      +		quirk_count = 0;
      +		kfree(quirk_list);
      +		quirk_list = NULL;
      +		goto unlock;
      +	}
      +
      +	for (quirk_count = 1, i = 0; val[i]; i++)
      +		if (val[i] == ',')
      +			quirk_count++;
      +
      +	if (quirk_list) {
      +		kfree(quirk_list);
      +		quirk_list = NULL;
      +	}
      +
      +	quirk_list = kcalloc(quirk_count, sizeof(struct quirk_entry),
      +			     GFP_KERNEL);
      +	if (!quirk_list) {
      +		mutex_unlock(&quirk_mutex);
      +		return -ENOMEM;
      +	}
      +
      +	for (i = 0, p = (char *)val; p && *p;) {
      +		/* Each entry consists of VID:PID:flags */
      +		field = strsep(&p, ":");
      +		if (!field)
      +			break;
      +
      +		if (kstrtou16(field, 16, &vid))
      +			break;
      +
      +		field = strsep(&p, ":");
      +		if (!field)
      +			break;
      +
      +		if (kstrtou16(field, 16, &pid))
      +			break;
      +
      +		field = strsep(&p, ",");
      +		if (!field || !*field)
      +			break;
      +
      +		/* Collect the flags */
      +		for (flags = 0; *field; field++) {
      +			switch (*field) {
      +			case 'a':
      +				flags |= USB_QUIRK_STRING_FETCH_255;
      +				break;
      +			case 'b':
      +				flags |= USB_QUIRK_RESET_RESUME;
      +				break;
      +			case 'c':
      +				flags |= USB_QUIRK_NO_SET_INTF;
      +				break;
      +			case 'd':
      +				flags |= USB_QUIRK_CONFIG_INTF_STRINGS;
      +				break;
      +			case 'e':
      +				flags |= USB_QUIRK_RESET;
      +				break;
      +			case 'f':
      +				flags |= USB_QUIRK_HONOR_BNUMINTERFACES;
      +				break;
      +			case 'g':
      +				flags |= USB_QUIRK_DELAY_INIT;
      +				break;
      +			case 'h':
      +				flags |= USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL;
      +				break;
      +			case 'i':
      +				flags |= USB_QUIRK_DEVICE_QUALIFIER;
      +				break;
      +			case 'j':
      +				flags |= USB_QUIRK_IGNORE_REMOTE_WAKEUP;
      +				break;
      +			case 'k':
      +				flags |= USB_QUIRK_NO_LPM;
      +				break;
      +			case 'l':
      +				flags |= USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL;
      +				break;
      +			case 'm':
      +				flags |= USB_QUIRK_DISCONNECT_SUSPEND;
      +				break;
      +			/* Ignore unrecognized flag characters */
      +			}
      +		}
      +
      +		quirk_list[i++] = (struct quirk_entry)
      +			{ .vid = vid, .pid = pid, .flags = flags };
      +	}
      +
      +	if (i < quirk_count)
      +		quirk_count = i;
      +
      +unlock:
      +	mutex_unlock(&quirk_mutex);
      +
      +	return param_set_copystring(val, kp);
      +}
      +
      +static const struct kernel_param_ops quirks_param_ops = {
      +	.set = quirks_param_set,
      +	.get = param_get_string,
      +};
      +
      +static struct kparam_string quirks_param_string = {
      +	.maxlen = sizeof(quirks_param),
      +	.string = quirks_param,
      +};
      +
      +module_param_cb(quirks, &quirks_param_ops, &quirks_param_string, 0644);
      +MODULE_PARM_DESC(quirks, "Add/modify USB quirks by specifying quirks=vendorID:productID:quirks");
      +
       /* Lists of quirky USB devices, split in device quirks and interface quirks.
        * Device quirks are applied at the very beginning of the enumeration process,
        * right after reading the device descriptor. They can thus only match on device
      @@ -320,8 +457,8 @@ static int usb_amd_resume_quirk(struct usb_device *udev)
       	return 0;
       }
      
      -static u32 __usb_detect_quirks(struct usb_device *udev,
      -			       const struct usb_device_id *id)
      +static u32 usb_detect_static_quirks(struct usb_device *udev,
      +				    const struct usb_device_id *id)
       {
       	u32 quirks = 0;
      
      @@ -339,21 +476,43 @@ static u32 __usb_detect_quirks(struct usb_device *udev,
       	return quirks;
       }
      
      +static u32 usb_detect_dynamic_quirks(struct usb_device *udev)
      +{
      +	u16 vid = le16_to_cpu(udev->descriptor.idVendor);
      +	u16 pid = le16_to_cpu(udev->descriptor.idProduct);
      +	int i, flags = 0;
      +
      +	mutex_lock(&quirk_mutex);
      +
      +	for (i = 0; i < quirk_count; i++) {
      +		if (vid == quirk_list[i].vid && pid == quirk_list[i].pid) {
      +			flags = quirk_list[i].flags;
      +			break;
      +		}
      +	}
      +
      +	mutex_unlock(&quirk_mutex);
      +
      +	return flags;
      +}
      +
       /*
        * Detect any quirks the device has, and do any housekeeping for it if needed.
        */
       void usb_detect_quirks(struct usb_device *udev)
       {
      -	udev->quirks = __usb_detect_quirks(udev, usb_quirk_list);
      +	udev->quirks = usb_detect_static_quirks(udev, usb_quirk_list);
      
       	/*
       	 * Pixart-based mice would trigger remote wakeup issue on AMD
       	 * Yangtze chipset, so set them as RESET_RESUME flag.
       	 */
       	if (usb_amd_resume_quirk(udev))
      -		udev->quirks |= __usb_detect_quirks(udev,
      +		udev->quirks |= usb_detect_static_quirks(udev,
       				usb_amd_resume_quirk_list);
      
      +	udev->quirks ^= usb_detect_dynamic_quirks(udev);
      +
       	if (udev->quirks)
       		dev_dbg(&udev->dev, "USB quirks for this device: %x\n",
       			udev->quirks);
      @@ -372,7 +531,7 @@ void usb_detect_interface_quirks(struct usb_device *udev)
       {
       	u32 quirks;
      
      -	quirks = __usb_detect_quirks(udev, usb_interface_quirk_list);
      +	quirks = usb_detect_static_quirks(udev, usb_interface_quirk_list);
       	if (quirks == 0)
       		return;
      
      @@ -380,3 +539,11 @@ void usb_detect_interface_quirks(struct usb_device *udev)
       		quirks);
       	udev->quirks |= quirks;
       }
      +
      +void usb_release_quirk_list(void)
      +{
      +	mutex_lock(&quirk_mutex);
      +	kfree(quirk_list);
      +	quirk_list = NULL;
      +	mutex_unlock(&quirk_mutex);
      +}
      diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
      index 2f5fbc56a9dd..0adb6345ff2e 100644
      --- a/drivers/usb/core/usb.c
      +++ b/drivers/usb/core/usb.c
      @@ -1259,6 +1259,7 @@ static void __exit usb_exit(void)
       	if (usb_disabled())
       		return;
      
      +	usb_release_quirk_list();
       	usb_deregister_device_driver(&usb_generic_driver);
       	usb_major_cleanup();
       	usb_deregister(&usbfs_driver);
      diff --git a/drivers/usb/core/usb.h b/drivers/usb/core/usb.h
      index 149cc7480971..546a2219454b 100644
      --- a/drivers/usb/core/usb.h
      +++ b/drivers/usb/core/usb.h
      @@ -36,6 +36,7 @@ extern void usb_deauthorize_interface(struct usb_interface *);
       extern void usb_authorize_interface(struct usb_interface *);
       extern void usb_detect_quirks(struct usb_device *udev);
       extern void usb_detect_interface_quirks(struct usb_device *udev);
      +extern void usb_release_quirk_list(void);
       extern int usb_remove_device(struct usb_device *udev);
      
       extern int usb_get_device_descriptor(struct usb_device *dev,
      95713fb8
    • ShuFan Lee's avatar
      staging: typec: modify parameter of tcpci_irq · 7d287a5d
      ShuFan Lee authored
      The parameter, dev_id, of tcpci_irq should be tcpci_chip.
      Remove definition of TCPC_CC_STATUS_DRPRST in tcpci.h.
      
      Fixes: 8f943902("staging: typec: handle vendor defined part and modify drp toggling flow")
      Signed-off-by: default avatarShuFan Lee <shufan_lee@richtek.com>
      Reviewed-by: default avatarLi Jun <jun.li@nxp.com>
      Tested-by: default avatarLi Jun <jun.li@nxp.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      7d287a5d
  3. 09 Mar, 2018 32 commits