usb_hid: fix r31457

descriptor_hid_get() updates its parameter so we need to take its address
the update is hidden inside PACK_DATA macro

Fix HID on the Fuze+
Reported by jlbiasini

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31466 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 4 insertions, 4 deletions

diff --git a/firmware/usbstack/usb_hid.c b/firmware/usbstack/usb_hid.c
index 46baff8222..b89e46f291 100644
--- a/firmware/usbstack/usb_hid.c
+++ b/firmware/usbstack/usb_hid.c
@@ -554,14 +554,14 @@ static size_t descriptor_report_get(unsigned char *dest)
     return (size_t)(report - dest);
 }
 
-static void descriptor_hid_get(unsigned char *dest)
+static void descriptor_hid_get(unsigned char **dest)
 {
     hid_descriptor.wDescriptorLength0= descriptor_report_get(report_descriptor);
 
     logf("hid: desc len %u", hid_descriptor.wDescriptorLength0);
     buf_dump(report_descriptor, hid_descriptor.wDescriptorLength0, "desc");
 
-    PACK_DATA(dest, hid_descriptor);
+    PACK_DATA(*dest, hid_descriptor);
 }
 
 int usb_hid_get_config_descriptor(unsigned char *dest, int max_packet_size)
@@ -577,7 +577,7 @@ int usb_hid_get_config_descriptor(unsigned char *dest, int max_packet_size)
     PACK_DATA(dest, interface_descriptor);
 
     /* HID descriptor */
-    descriptor_hid_get(dest);
+    descriptor_hid_get(&dest);
 
     /* Endpoint descriptor */
     endpoint_descriptor.wMaxPacketSize = 8;
@@ -703,7 +703,7 @@ bool usb_hid_control_request(struct usb_ctrlrequest *req, unsigned char *dest)
         switch (type)
         {
         case USB_DT_HID:
-            descriptor_hid_get(dest);
+            descriptor_hid_get(&dest);
             break;
         case USB_DT_REPORT:
             len = descriptor_report_get(report_descriptor);