gadget: f_thor: fix wrong file size cast

Casting 32bit int value directly into 64bit unsigned type causes
wrong value for file size equal or larger than 2GB. Fix the wrong
file size by casting uint32_t first.

Change-Id: I7b344856e2cabfb31ef05521c09914599163d923
Fixes: commit 1fe9ae76b113 ("gadget: f_thor: update to support more than 4GB file as thor 5.0")
Reported-by: Junghoon Kim <jhoon20.kim@samsung.com>
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>

diff --git a/drivers/usb/gadget/f_thor.c b/drivers/usb/gadget/f_thor.c
index ed6cde8..f8dd8e6 100644 (file)
--- a/drivers/usb/gadget/f_thor.c
+++ b/drivers/usb/gadget/f_thor.c
@@ -279,8 +279,8 @@ static int process_rqt_download(const struct rqt_box *rqt)
 
        switch (rqt->rqt_data) {
        case RQT_DL_INIT:
-               thor_file_size = (unsigned long long int)rqt->int_data[0] +
-                                (((unsigned long long int)rqt->int_data[1])
+               thor_file_size = (uint64_t)(uint32_t)rqt->int_data[0] +
+                                (((uint64_t)(uint32_t)rqt->int_data[1])
                                  << 32);
 #ifdef CONFIG_TIZEN
                total_file_size = thor_file_size;
@@ -297,8 +297,8 @@ static int process_rqt_download(const struct rqt_box *rqt)
                        break;
                }
 
-               thor_file_size = (unsigned long long int)rqt->int_data[1] +
-                                (((unsigned long long int)rqt->int_data[2])
+               thor_file_size = (uint64_t)(uint32_t)rqt->int_data[1] +
+                                (((uint64_t)(uint32_t)rqt->int_data[2])
                                  << 32);
                memcpy(f_name, rqt->str_data[0], F_NAME_BUF_SIZE);
                f_name[F_NAME_BUF_SIZE] = '\0';