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usb: renesas_usbhs: fix error return code of usbhsf_pkt_handler()

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When __usbhsf_pkt_get() returns NULL to pkt, no error return code of
usbhsf_pkt_handler() is assigned.
To fix this bug, ret is assigned with -EINVAL in this case.

Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Link: https://lore.kernel.org/r/20210307090030.22369-1-baijiaju1990@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jia-Ju Bai 2021-03-07 01:00:30 -08:00 committed by Greg Kroah-Hartman
parent 0c59f678fc
commit 3af3260528
1 changed files with 3 additions and 1 deletions
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4
drivers/usb/renesas_usbhs/fifo.c
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@ -160,8 +160,10 @@ static int usbhsf_pkt_handler(struct usbhs_pipe *pipe, int type)
usbhs_lock(priv, flags);
pkt = __usbhsf_pkt_get(pipe);
if (!pkt)
if (!pkt) {
ret = -EINVAL;
goto __usbhs_pkt_handler_end;
}
switch (type) {
case USBHSF_PKT_PREPARE: