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authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-21 10:51:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-21 10:51:03 -0700
commit8b108c609adefd98577c35f0a41497a610041a6c (patch)
treef1552fdc5bf0ebcc484a88f01cd3864113adf25c /drivers/hid/usbhid
parent7ce1418f95e918cfc5ad36e3ec3431145c768cd0 (diff)
parent73d5e8f77e88a4d3a154dfdbb4ed2cf461b7bf21 (diff)
downloadblackbird-op-linux-8b108c609adefd98577c35f0a41497a610041a6c.tar.gz
blackbird-op-linux-8b108c609adefd98577c35f0a41497a610041a6c.zip
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (59 commits) HID: fix up 'EMBEDDED' mess in Kconfig HID: roccat: cleanup preprocessor macros HID: roccat: refactor special event handling HID: roccat: fix special button support HID: roccat: Correctly mark init and exit functions HID: hidraw: Use Interrupt Endpoint for OUT Transfers if Available HID: hid-samsung: remove redundant key mappings HID: add omitted hid-zydacron.c file HID: hid-samsung: add support for Creative Desktop Wireless 6000 HID: picolcd: Eliminate use after free HID: Zydacron Remote Control driver HID: Use kmemdup HID: magicmouse: fix input registration HID: make Prodikeys driver standalone config option HID: Prodikeys PC-MIDI HID Driver HID: hidraw: fix indentation HID: ntrig: add filtering module parameters HID: ntrig: add sysfs access to filter parameters HID: ntrig: add sensitivity and responsiveness support HID: add multi-input quirk for eGalax Touchcontroller ...
Diffstat (limited to 'drivers/hid/usbhid')
-rw-r--r--drivers/hid/usbhid/hid-core.c73
-rw-r--r--drivers/hid/usbhid/hid-quirks.c1
-rw-r--r--drivers/hid/usbhid/hiddev.c19
-rw-r--r--drivers/hid/usbhid/usbkbd.c1
4 files changed, 79 insertions, 15 deletions
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index df619756b7ae..1ebd3244eb85 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -623,6 +623,7 @@ int usbhid_wait_io(struct hid_device *hid)
return 0;
}
+EXPORT_SYMBOL_GPL(usbhid_wait_io);
static int hid_set_idle(struct usb_device *dev, int ifnum, int report, int idle)
{
@@ -806,16 +807,36 @@ static int usbhid_output_raw_report(struct hid_device *hid, __u8 *buf, size_t co
struct usb_host_interface *interface = intf->cur_altsetting;
int ret;
- ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
- HID_REQ_SET_REPORT,
- USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
- ((report_type + 1) << 8) | *buf,
- interface->desc.bInterfaceNumber, buf + 1, count - 1,
- USB_CTRL_SET_TIMEOUT);
-
- /* count also the report id */
- if (ret > 0)
- ret++;
+ if (usbhid->urbout) {
+ int actual_length;
+ int skipped_report_id = 0;
+ if (buf[0] == 0x0) {
+ /* Don't send the Report ID */
+ buf++;
+ count--;
+ skipped_report_id = 1;
+ }
+ ret = usb_interrupt_msg(dev, usbhid->urbout->pipe,
+ buf, count, &actual_length,
+ USB_CTRL_SET_TIMEOUT);
+ /* return the number of bytes transferred */
+ if (ret == 0) {
+ ret = actual_length;
+ /* count also the report id */
+ if (skipped_report_id)
+ ret++;
+ }
+ } else {
+ ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ HID_REQ_SET_REPORT,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ ((report_type + 1) << 8) | *buf,
+ interface->desc.bInterfaceNumber, buf + 1, count - 1,
+ USB_CTRL_SET_TIMEOUT);
+ /* count also the report id */
+ if (ret > 0)
+ ret++;
+ }
return ret;
}
@@ -1017,12 +1038,15 @@ static int usbhid_start(struct hid_device *hid)
/* Some keyboards don't work until their LEDs have been set.
* Since BIOSes do set the LEDs, it must be safe for any device
* that supports the keyboard boot protocol.
+ * In addition, enable remote wakeup by default for all keyboard
+ * devices supporting the boot protocol.
*/
if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT &&
interface->desc.bInterfaceProtocol ==
- USB_INTERFACE_PROTOCOL_KEYBOARD)
+ USB_INTERFACE_PROTOCOL_KEYBOARD) {
usbhid_set_leds(hid);
-
+ device_set_wakeup_enable(&dev->dev, 1);
+ }
return 0;
fail:
@@ -1131,6 +1155,7 @@ static int usbhid_probe(struct usb_interface *intf, const struct usb_device_id *
hid->vendor = le16_to_cpu(dev->descriptor.idVendor);
hid->product = le16_to_cpu(dev->descriptor.idProduct);
hid->name[0] = 0;
+ hid->quirks = usbhid_lookup_quirk(hid->vendor, hid->product);
if (intf->cur_altsetting->desc.bInterfaceProtocol ==
USB_INTERFACE_PROTOCOL_MOUSE)
hid->type = HID_TYPE_USBMOUSE;
@@ -1287,6 +1312,11 @@ static int hid_suspend(struct usb_interface *intf, pm_message_t message)
{
set_bit(HID_REPORTED_IDLE, &usbhid->iofl);
spin_unlock_irq(&usbhid->lock);
+ if (hid->driver && hid->driver->suspend) {
+ status = hid->driver->suspend(hid, message);
+ if (status < 0)
+ return status;
+ }
} else {
usbhid_mark_busy(usbhid);
spin_unlock_irq(&usbhid->lock);
@@ -1294,6 +1324,11 @@ static int hid_suspend(struct usb_interface *intf, pm_message_t message)
}
} else {
+ if (hid->driver && hid->driver->suspend) {
+ status = hid->driver->suspend(hid, message);
+ if (status < 0)
+ return status;
+ }
spin_lock_irq(&usbhid->lock);
set_bit(HID_REPORTED_IDLE, &usbhid->iofl);
spin_unlock_irq(&usbhid->lock);
@@ -1348,6 +1383,11 @@ static int hid_resume(struct usb_interface *intf)
hid_io_error(hid);
usbhid_restart_queues(usbhid);
+ if (status >= 0 && hid->driver && hid->driver->resume) {
+ int ret = hid->driver->resume(hid);
+ if (ret < 0)
+ status = ret;
+ }
dev_dbg(&intf->dev, "resume status %d\n", status);
return 0;
}
@@ -1356,9 +1396,16 @@ static int hid_reset_resume(struct usb_interface *intf)
{
struct hid_device *hid = usb_get_intfdata(intf);
struct usbhid_device *usbhid = hid->driver_data;
+ int status;
clear_bit(HID_REPORTED_IDLE, &usbhid->iofl);
- return hid_post_reset(intf);
+ status = hid_post_reset(intf);
+ if (status >= 0 && hid->driver && hid->driver->reset_resume) {
+ int ret = hid->driver->reset_resume(hid);
+ if (ret < 0)
+ status = ret;
+ }
+ return status;
}
#endif /* CONFIG_PM */
diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c
index 1152f9b5fd44..5ff8d327f33a 100644
--- a/drivers/hid/usbhid/hid-quirks.c
+++ b/drivers/hid/usbhid/hid-quirks.c
@@ -33,6 +33,7 @@ static const struct hid_blacklist {
{ USB_VENDOR_ID_AASHIMA, USB_DEVICE_ID_AASHIMA_PREDATOR, HID_QUIRK_BADPAD },
{ USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
{ USB_VENDOR_ID_CHIC, USB_DEVICE_ID_CHIC_GAMEPAD, HID_QUIRK_BADPAD },
+ { USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH, HID_QUIRK_MULTI_INPUT },
{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
index 433602aed468..c24d2fa3e3b6 100644
--- a/drivers/hid/usbhid/hiddev.c
+++ b/drivers/hid/usbhid/hiddev.c
@@ -267,6 +267,7 @@ static int hiddev_open(struct inode *inode, struct file *file)
struct hiddev_list *list;
int res, i;
+ /* See comment in hiddev_connect() for BKL explanation */
lock_kernel();
i = iminor(inode) - HIDDEV_MINOR_BASE;
@@ -894,8 +895,22 @@ int hiddev_connect(struct hid_device *hid, unsigned int force)
hiddev->hid = hid;
hiddev->exist = 1;
- /* when lock_kernel() usage is fixed in usb_open(),
- * we could also fix it here */
+ /*
+ * BKL here is used to avoid race after usb_register_dev().
+ * Once the device node has been created, open() could happen on it.
+ * The code below will then fail, as hiddev_table hasn't been
+ * updated.
+ *
+ * The obvious fix -- introducing mutex to guard hiddev_table[]
+ * doesn't work, as usb_open() and usb_register_dev() both take
+ * minor_rwsem, thus we'll have ABBA deadlock.
+ *
+ * Before BKL pushdown, usb_open() had been acquiring it in right
+ * order, so _open() was safe to use it to protect from this race.
+ * Now the order is different, but AB-BA deadlock still doesn't occur
+ * as BKL is dropped on schedule() (i.e. while sleeping on
+ * minor_rwsem). Fugly.
+ */
lock_kernel();
retval = usb_register_dev(usbhid->intf, &hiddev_class);
if (retval) {
diff --git a/drivers/hid/usbhid/usbkbd.c b/drivers/hid/usbhid/usbkbd.c
index bb14c8270af3..a948605564fb 100644
--- a/drivers/hid/usbhid/usbkbd.c
+++ b/drivers/hid/usbhid/usbkbd.c
@@ -311,6 +311,7 @@ static int usb_kbd_probe(struct usb_interface *iface,
goto fail2;
usb_set_intfdata(iface, kbd);
+ device_set_wakeup_enable(&dev->dev, 1);
return 0;
fail2:
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