Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / sound / usb / clock.c

diff --git a/kernel/sound/usb/clock.c b/kernel/sound/usb/clock.c
index 2ed260b..7ccbcaf 100644 (file)
--- a/kernel/sound/usb/clock.c
+++ b/kernel/sound/usb/clock.c
@@ -285,6 +285,8 @@ static int set_sample_rate_v1(struct snd_usb_audio *chip, int iface,
        unsigned char data[3];
        int err, crate;
 
+       if (get_iface_desc(alts)->bNumEndpoints < 1)
+               return -EINVAL;
        ep = get_endpoint(alts, 0)->bEndpointAddress;
 
        /* if endpoint doesn't have sampling rate control, bail out */