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.
Fixes: commit 1fe9ae76b113 ("gadget: f_thor: update to support more than 4GB
file as thor 5.0")
Reported-by: Junghoon Kim <jhoon20....@samsung.com>
Signed-off-by: Seung-Woo Kim <sw0312....@samsung.com>
---
drivers/usb/gadget/f_thor.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/gadget/f_thor.c b/drivers/usb/gadget/f_thor.c
index 88fc87f2e9..559ffb759e 100644
--- a/drivers/usb/gadget/f_thor.c
+++ b/drivers/usb/gadget/f_thor.c
@@ -266,8 +266,8 @@ static long long 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);
debug("INIT: total %llu bytes\n", thor_file_size);
break;
@@ -280,8 +280,8 @@ static long long 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';
--
2.19.2
