usb: gadget: u_bam: Fix NULL pointer dereference crash
port->port_usb could be NULL as part of assigning to in endpoint, so,
check port->port_usb is valid before assigning the endpoint.
CRs-Fixed: 451723
Change-Id: I00acc5e7a3ca2f47046908c345e4a0ed050fe122
Signed-off-by: Chiranjeevi Velempati <cvelempa@codeaurora.org>
diff --git a/drivers/usb/gadget/u_bam.c b/drivers/usb/gadget/u_bam.c
index fe39700..a2997e9 100644
--- a/drivers/usb/gadget/u_bam.c
+++ b/drivers/usb/gadget/u_bam.c
@@ -582,6 +582,11 @@
spin_unlock_irqrestore(&port->port_lock_ul, flags);
spin_lock_irqsave(&port->port_lock_dl, flags);
+ if (!port->port_usb) {
+ gbam_free_requests(ep, &d->rx_idle);
+ spin_unlock_irqrestore(&port->port_lock_dl, flags);
+ return;
+ }
ep = port->port_usb->in;
ret = gbam_alloc_requests(ep, &d->tx_idle, bam_mux_tx_q_size,
gbam_epin_complete, GFP_ATOMIC);