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Commit be820975 authored by Anssi Hannula's avatar Anssi Hannula Committed by Jiri Kosina
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HID: put usb_interface instead of usb_device into hid->dev to fix udevinfo breakage 



The commit 4916b3a5 introduced a
hid regression between 2.6.19 and 2.6.20-rc1. The device put in
input_dev->cdev is now of type usb_device instead of usb_interface.

Before:
> # readlink -f /sys/class/input/input6/event4/device
> /sys/devices/pci0000:00/0000:00:10.0/usb2/2-1/2-1:1.1
After:
> # readlink -f /sys/class/input/input3/event3/device
> /sys/devices/pci0000:00/0000:00:10.0/usb1/1-1

This causes breakage:
> # udevinfo -q all -n /dev/input/event3
> P: /class/input/input3/event3
> N: input/event3
> S: input/by-path/pci-1-1--event-
> E: ID_SERIAL=noserial
> E: ID_PATH=pci-1-1-

No ID_MODEL, ID_VENDOR, ID_REVISION, ID_TYPE etc etc.

Fix this by assigning the intf->dev into hid->dev, and fixing
all the users.

Signed-off-by: default avatarAnssi Hannula <anssi.hannula@gmail.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent f7ebf99e

drivers/usb/input/hid-core.c

+15 −15
Original line number Diff line number Diff line
@@ -106,18 +106,18 @@ static void hid_reset(struct work_struct *work) 


	if (test_bit(HID_CLEAR_HALT, &usbhid->iofl)) {

		dev_dbg(&usbhid->intf->dev, "clear halt\n");

		rc = usb_clear_halt(to_usb_device(hid->dev), usbhid->urbin->pipe);

		rc = usb_clear_halt(hid_to_usb_dev(hid), usbhid->urbin->pipe);

		clear_bit(HID_CLEAR_HALT, &usbhid->iofl);

		hid_start_in(hid);

	}



	else if (test_bit(HID_RESET_PENDING, &usbhid->iofl)) {

		dev_dbg(&usbhid->intf->dev, "resetting device\n");

		rc = rc_lock = usb_lock_device_for_reset(to_usb_device(hid->dev), usbhid->intf);

		rc = rc_lock = usb_lock_device_for_reset(hid_to_usb_dev(hid), usbhid->intf);

		if (rc_lock >= 0) {

			rc = usb_reset_composite_device(to_usb_device(hid->dev), usbhid->intf);

			rc = usb_reset_composite_device(hid_to_usb_dev(hid), usbhid->intf);

			if (rc_lock)

				usb_unlock_device(to_usb_device(hid->dev));

				usb_unlock_device(hid_to_usb_dev(hid));

		}

		clear_bit(HID_RESET_PENDING, &usbhid->iofl);

	}
@@ -129,8 +129,8 @@ static void hid_reset(struct work_struct *work) 
		break;

	default:

		err("can't reset device, %s-%s/input%d, status %d",

				to_usb_device(hid->dev)->bus->bus_name,

				to_usb_device(hid->dev)->devpath,

				hid_to_usb_dev(hid)->bus->bus_name,

				hid_to_usb_dev(hid)->devpath,

				usbhid->ifnum, rc);

		/* FALLTHROUGH */

	case -EHOSTUNREACH:
@@ -217,8 +217,8 @@ static void hid_irq_in(struct urb *urb) 
		clear_bit(HID_IN_RUNNING, &usbhid->iofl);

		if (status != -EPERM) {

			err("can't resubmit intr, %s-%s/input%d, status %d",

					to_usb_device(hid->dev)->bus->bus_name,

					to_usb_device(hid->dev)->devpath,

					hid_to_usb_dev(hid)->bus->bus_name,

					hid_to_usb_dev(hid)->devpath,

					usbhid->ifnum, status);

			hid_io_error(hid);

		}
@@ -251,7 +251,7 @@ static int hid_submit_out(struct hid_device *hid) 


	hid_output_report(report, usbhid->outbuf);

	usbhid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);

	usbhid->urbout->dev = to_usb_device(hid->dev);

	usbhid->urbout->dev = hid_to_usb_dev(hid);



	dbg("submitting out urb");
@@ -276,13 +276,13 @@ static int hid_submit_ctrl(struct hid_device *hid) 
	len = ((report->size - 1) >> 3) + 1 + (report->id > 0);

	if (dir == USB_DIR_OUT) {

		hid_output_report(report, usbhid->ctrlbuf);

		usbhid->urbctrl->pipe = usb_sndctrlpipe(to_usb_device(hid->dev), 0);

		usbhid->urbctrl->pipe = usb_sndctrlpipe(hid_to_usb_dev(hid), 0);

		usbhid->urbctrl->transfer_buffer_length = len;

	} else {

		int maxpacket, padlen;



		usbhid->urbctrl->pipe = usb_rcvctrlpipe(to_usb_device(hid->dev), 0);

		maxpacket = usb_maxpacket(to_usb_device(hid->dev), usbhid->urbctrl->pipe, 0);

		usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0);

		maxpacket = usb_maxpacket(hid_to_usb_dev(hid), usbhid->urbctrl->pipe, 0);

		if (maxpacket > 0) {

			padlen = (len + maxpacket - 1) / maxpacket;

			padlen *= maxpacket;
@@ -292,7 +292,7 @@ static int hid_submit_ctrl(struct hid_device *hid) 
			padlen = 0;

		usbhid->urbctrl->transfer_buffer_length = padlen;

	}

	usbhid->urbctrl->dev = to_usb_device(hid->dev);

	usbhid->urbctrl->dev = hid_to_usb_dev(hid);



	usbhid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;

	usbhid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
@@ -1187,7 +1187,7 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf) 


	hid->version = le16_to_cpu(hdesc->bcdHID);

	hid->country = hdesc->bCountryCode;

	hid->dev = &dev->dev;

	hid->dev = &intf->dev;

	usbhid->intf = intf;

	usbhid->ifnum = interface->desc.bInterfaceNumber;
@@ -1282,7 +1282,7 @@ static void hid_disconnect(struct usb_interface *intf) 
	usb_free_urb(usbhid->urbctrl);

	usb_free_urb(usbhid->urbout);



	hid_free_buffers(to_usb_device(hid->dev), hid);

	hid_free_buffers(hid_to_usb_dev(hid), hid);

	hid_free_device(hid);

}

drivers/usb/input/hid-ff.c

+3 −2
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ 
#include <linux/usb.h>



#include <linux/hid.h>

#include "usbhid.h"



/*

 * This table contains pointers to initializers. To add support for new
@@ -70,8 +71,8 @@ static struct hid_ff_initializer inits[] = { 
int hid_ff_init(struct hid_device* hid)

{

	struct hid_ff_initializer *init;

	int vendor = le16_to_cpu(to_usb_device(hid->dev)->descriptor.idVendor);

	int product = le16_to_cpu(to_usb_device(hid->dev)->descriptor.idProduct);

	int vendor = le16_to_cpu(hid_to_usb_dev(hid)->descriptor.idVendor);

	int product = le16_to_cpu(hid_to_usb_dev(hid)->descriptor.idProduct);



	for (init = inits; init->idVendor; init++)

		if (init->idVendor == vendor && init->idProduct == product)

drivers/usb/input/hiddev.c

+1 −1
Original line number Diff line number Diff line
@@ -384,7 +384,7 @@ static int hiddev_ioctl(struct inode *inode, struct file *file, unsigned int cmd 
	struct hiddev_list *list = file->private_data;

	struct hiddev *hiddev = list->hiddev;

	struct hid_device *hid = hiddev->hid;

	struct usb_device *dev = to_usb_device(hid->dev);

	struct usb_device *dev = hid_to_usb_dev(hid);

	struct hiddev_collection_info cinfo;

	struct hiddev_report_info rinfo;

	struct hiddev_field_info finfo;

drivers/usb/input/usbhid.h

+3 −0
Original line number Diff line number Diff line
@@ -80,5 +80,8 @@ struct usbhid_device { 


};



#define	hid_to_usb_dev(hid_dev) \

	container_of(hid_dev->dev->parent, struct usb_device, dev)



#endif