usb: gadget: f_sourcesink: Fix isoc transfer for USB_SPEED_SUPER_PLUS

commit 904edf8aeb459697129be5fde847e2a502f41fd9 upstream.

Currently when gadget enumerates in super speed plus, the isoc
endpoint request buffer size is not calculated correctly. Fix
this by checking the gadget speed against USB_SPEED_SUPER_PLUS
and update the request buffer size.

Fixes: 90c4d05780d4 ("usb: fix various gadgets null ptr deref on 10gbps cabling.")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Pavankumar Kondeti <quic_pkondeti@quicinc.com>
Link: https://lore.kernel.org/r/1642820602-20619-1-git-send-email-quic_pkondeti@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/gadget/function/f_sourcesink.c b/drivers/usb/gadget/function/f_sourcesink.c
index 282737e4609ce85cc3ee16b491de22f99f5b65dd..2c65a9bb3c81bc52a5cd073b758b90deba5c714f 100644 (file)
--- a/drivers/usb/gadget/function/f_sourcesink.c
+++ b/drivers/usb/gadget/function/f_sourcesink.c
@@ -583,6 +583,7 @@ static int source_sink_start_ep(struct f_sourcesink *ss, bool is_in,
 
        if (is_iso) {
                switch (speed) {
+               case USB_SPEED_SUPER_PLUS:
                case USB_SPEED_SUPER:
                        size = ss->isoc_maxpacket *
                                        (ss->isoc_mult + 1) *