From 74f57016dcec849315f7af52cdc429c676748267 Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Mon, 16 Mar 2015 05:39:41 +0000 Subject: [PATCH] [ncm] Respect maximum transfer size of the bus Signed-off-by: Michael Brown --- src/drivers/net/ncm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/drivers/net/ncm.c b/src/drivers/net/ncm.c index 8620985b..10728d2a 100644 --- a/src/drivers/net/ncm.c +++ b/src/drivers/net/ncm.c @@ -157,6 +157,7 @@ static struct usb_endpoint_driver_operations ncm_intr_operations = { * @ret rc Return status code */ static int ncm_in_prefill ( struct ncm_device *ncm ) { + struct usb_bus *bus = ncm->bus; size_t mtu; unsigned int count; int rc; @@ -178,6 +179,8 @@ static int ncm_in_prefill ( struct ncm_device *ncm ) { /* Attempt allocation at this MTU */ if ( mtu > NCM_MAX_NTB_INPUT_SIZE ) continue; + if ( mtu > bus->mtu ) + continue; count = ( NCM_IN_MIN_SIZE / mtu ); if ( count < NCM_IN_MIN_COUNT ) count = NCM_IN_MIN_COUNT;