Upstream commit 10c901209306
("usbip: stub_rx: fix static checker warning on unnecessary checks")
Back-port fix for static checker warning on unnecessary checks
smatch warnings:
drivers/staging/usbip/stub_rx.c:360 get_pipe() warn: impossible
condition '(pdu->u.cmd_submit.transfer_buffer_length > ((~0 >> 1))) =>
(s32min-s32max > s32max)'
drivers/staging/usbip/stub_rx.c:501 stub_recv_cmd_submit() warn: always
true condition '(pdu->u.cmd_submit.transfer_buffer_length <= ((~0 >>
1))) => (s32min-s32max <= s32max)'
Reported-by: Dan Carpenter <dan.carpen...@oracle.com>
Signed-off-by: Shuah Khan <shua...@osg.samsung.com>
---
drivers/staging/usbip/stub_rx.c | 11 +----------
1 file changed, 1 insertion(+), 10 deletions(-)
diff --git a/drivers/staging/usbip/stub_rx.c b/drivers/staging/usbip/stub_rx.c
index 35f59747122a..d8544ab9577b 100644
--- a/drivers/staging/usbip/stub_rx.c
+++ b/drivers/staging/usbip/stub_rx.c
@@ -356,14 +356,6 @@ static int get_pipe(struct stub_device *sdev, struct
usbip_header *pdu)
epd = &ep->desc;
- /* validate transfer_buffer_length */
- if (pdu->u.cmd_submit.transfer_buffer_length > INT_MAX) {
- dev_err(&sdev->udev->dev,
- "CMD_SUBMIT: -EMSGSIZE transfer_buffer_length %d\n",
- pdu->u.cmd_submit.transfer_buffer_length);
- return -1;
- }
-
if (usb_endpoint_xfer_control(epd)) {
if (dir == USBIP_DIR_OUT)
return usb_sndctrlpipe(udev, epnum);
@@ -497,8 +489,7 @@ static void stub_recv_cmd_submit(struct stub_device *sdev,
}
/* allocate urb transfer buffer, if needed */
- if (pdu->u.cmd_submit.transfer_buffer_length > 0 &&
- pdu->u.cmd_submit.transfer_buffer_length <= INT_MAX) {
+ if (pdu->u.cmd_submit.transfer_buffer_length > 0) {
priv->urb->transfer_buffer =
kzalloc(pdu->u.cmd_submit.transfer_buffer_length,
GFP_KERNEL);
--
2.14.1
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