3 files changed, 33 insertions, 0 deletions

diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 91d610358d57..1c0bd481219c 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -692,6 +692,30 @@ static void hid_fixup_logitech_descriptor(unsigned char *rdesc, int rsize)
         }
 }
 
+/*
+ * Some USB barcode readers from cypress have usage min and usage max in
+ * the wrong order
+ */
+static void hid_fixup_cypress_descriptor(unsigned char *rdesc, int rsize)
+{
+        short fixed = 0;
+        int i;
+
+        for (i = 0; i < rsize - 4; i++) {
+                if (rdesc[i] == 0x29 && rdesc [i+2] == 0x19) {
+                        unsigned char tmp;
+
+                        rdesc[i] = 0x19; rdesc[i+2] = 0x29;
+                        tmp = rdesc[i+3];
+                        rdesc[i+3] = rdesc[i+1];
+                        rdesc[i+1] = tmp;
+                }
+        }
+
+        if (fixed)
+                info("Fixing up Cypress report descriptor");
+}
+
 static struct hid_device *usb_hid_configure(struct usb_interface *intf)
 {
         struct usb_host_interface *interface = intf->cur_altsetting;
@@ -758,6 +782,9 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf)
         if (quirks & HID_QUIRK_LOGITECH_DESCRIPTOR)
                 hid_fixup_logitech_descriptor(rdesc, rsize);
 
+        if (quirks & HID_QUIRK_SWAPPED_MIN_MAX)
+                hid_fixup_cypress_descriptor(rdesc, rsize);
+
 #ifdef CONFIG_HID_DEBUG
         printk(KERN_DEBUG __FILE__ ": report descriptor (size %u, read %d) = ", rsize, n);
         for (n = 0; n < rsize; n++)
diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c
index 17a87555e32f..6216f6049ecd 100644
--- a/drivers/hid/usbhid/hid-quirks.c
+++ b/drivers/hid/usbhid/hid-quirks.c
@@ -92,6 +92,8 @@
 #define USB_DEVICE_ID_CYPRESS_MOUSE     0x0001
 #define USB_DEVICE_ID_CYPRESS_HIDCOM    0x5500
 #define USB_DEVICE_ID_CYPRESS_ULTRAMOUSE        0x7417
+#define USB_DEVICE_ID_CYPRESS_BARCODE_1 0xde61
+#define USB_DEVICE_ID_CYPRESS_BARCODE_2 0xde64
 
 #define USB_VENDOR_ID_DELL              0x413c
 #define USB_DEVICE_ID_DELL_W7658        0x2005
@@ -445,6 +447,9 @@ static const struct hid_blacklist {
 
         { USB_VENDOR_ID_DELL, USB_DEVICE_ID_DELL_W7658, HID_QUIRK_RESET_LEDS },
 
+        { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1, HID_QUIRK_SWAPPED_MIN_MAX },
+        { USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2, HID_QUIRK_SWAPPED_MIN_MAX },
+
         { 0, 0 }
 };
 
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 37076b116ed0..827ee748fd4c 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -275,6 +275,7 @@ struct hid_item {
 #define HID_QUIRK_LOGITECH_DESCRIPTOR           0x00100000
 #define HID_QUIRK_DUPLICATE_USAGES              0x00200000
 #define HID_QUIRK_RESET_LEDS                    0x00400000
+#define HID_QUIRK_SWAPPED_MIN_MAX               0x00800000
 
 /*
  * This is the global environment of the parser. This information is