HID: add MacBookAir4,2 to hid_have_special_driver[]

[karo-tx-linux.git] / drivers / hid / hid-core.c

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 1ae647e3e81c95bdde5ebef353346e222f888bfc..681387377ed379c668ba1df9d1071f3a8f9df91d 100644 (file)
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -29,6 +29,7 @@
 #include <linux/wait.h>
 #include <linux/vmalloc.h>
 #include <linux/sched.h>
+#include <linux/semaphore.h>
 
 #include <linux/hid.h>
 #include <linux/hiddev.h>
@@ -1085,16 +1086,25 @@ int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int i
        struct hid_report *report;
        char *buf;
        unsigned int i;
-       int ret;
+       int ret = 0;
 
-       if (!hid || !hid->driver)
+       if (!hid)
                return -ENODEV;
+
+       if (down_trylock(&hid->driver_lock))
+               return -EBUSY;
+
+       if (!hid->driver) {
+               ret = -ENODEV;
+               goto unlock;
+       }
        report_enum = hid->report_enum + type;
        hdrv = hid->driver;
 
        if (!size) {
                dbg_hid("empty report\n");
-               return -1;
+               ret = -1;
+               goto unlock;
        }
 
        buf = kmalloc(sizeof(char) * HID_DEBUG_BUFSIZE, GFP_ATOMIC);
@@ -1118,18 +1128,24 @@ int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int i
 nomem:
        report = hid_get_report(report_enum, data);
 
-       if (!report)
-               return -1;
+       if (!report) {
+               ret = -1;
+               goto unlock;
+       }
 
        if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
                ret = hdrv->raw_event(hid, report, data, size);
-               if (ret != 0)
-                       return ret < 0 ? ret : 0;
+               if (ret != 0) {
+                       ret = ret < 0 ? ret : 0;
+                       goto unlock;
+               }
        }
 
        hid_report_raw_event(hid, type, data, size, interrupt);
 
-       return 0;
+unlock:
+       up(&hid->driver_lock);
+       return ret;
 }
 EXPORT_SYMBOL_GPL(hid_input_report);
 
@@ -1340,6 +1356,9 @@ static const struct hid_device_id hid_have_special_driver[] = {
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
@@ -1359,6 +1378,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
        { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CVTOUCH, USB_DEVICE_ID_CVTOUCH_SCREEN) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
@@ -1423,8 +1443,10 @@ static const struct hid_device_id hid_have_special_driver[] = {
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, USB_DEVICE_ID_CRYSTALTOUCH) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_LUMIO, USB_DEVICE_ID_CRYSTALTOUCH_DUAL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
+       { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
@@ -1507,6 +1529,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
        { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },
 
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
+       { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
        { }
 };
 
@@ -1613,6 +1636,9 @@ static int hid_device_probe(struct device *dev)
        const struct hid_device_id *id;
        int ret = 0;
 
+       if (down_interruptible(&hdev->driver_lock))
+               return -EINTR;
+
        if (!hdev->driver) {
                id = hid_match_device(hdev, hdrv);
                if (id == NULL)
@@ -1629,14 +1655,20 @@ static int hid_device_probe(struct device *dev)
                if (ret)
                        hdev->driver = NULL;
        }
+
+       up(&hdev->driver_lock);
        return ret;
 }
 
 static int hid_device_remove(struct device *dev)
 {
        struct hid_device *hdev = container_of(dev, struct hid_device, dev);
-       struct hid_driver *hdrv = hdev->driver;
+       struct hid_driver *hdrv;
+
+       if (down_interruptible(&hdev->driver_lock))
+               return -EINTR;
 
+       hdrv = hdev->driver;
        if (hdrv) {
                if (hdrv->remove)
                        hdrv->remove(hdev);
@@ -1645,6 +1677,7 @@ static int hid_device_remove(struct device *dev)
                hdev->driver = NULL;
        }
 
+       up(&hdev->driver_lock);
        return 0;
 }
 
@@ -1992,6 +2025,7 @@ struct hid_device *hid_allocate_device(void)
 
        init_waitqueue_head(&hdev->debug_wait);
        INIT_LIST_HEAD(&hdev->debug_list);
+       sema_init(&hdev->driver_lock, 1);
 
        return hdev;
 err: