USB: gadget: f_mtp: Support for file transfer length greater than 4 gigabytes
For backward compatibility with PTP, MTP is limited to a 32-bit file size.
When transferring files greater than 4 gig, MTP uses 0xFFFFFFFF as the file size
and the receiver reads until it receives a short packet.
Expanded size of mtp_file_range.length to 64 bits and added support for
writing zero length packets.
Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/include/linux/usb/f_mtp.h b/include/linux/usb/f_mtp.h
index 426c6b5..e4fd880 100644
--- a/include/linux/usb/f_mtp.h
+++ b/include/linux/usb/f_mtp.h
@@ -29,7 +29,7 @@
/* offset in file for start of transfer */
loff_t offset;
/* number of bytes to transfer */
- size_t length;
+ int64_t length;
};
struct mtp_event {