diff options
| -rw-r--r-- | sys/dev/ntb/if_ntb/if_ntb.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sys/dev/ntb/if_ntb/if_ntb.c b/sys/dev/ntb/if_ntb/if_ntb.c index 101691d..09c1736 100644 --- a/sys/dev/ntb/if_ntb/if_ntb.c +++ b/sys/dev/ntb/if_ntb/if_ntb.c @@ -1129,12 +1129,20 @@ ntb_set_mw(struct ntb_netdev *nt, int num_mw, unsigned int size) { struct ntb_transport_mw *mw = &nt->mw[num_mw]; + /* No need to re-setup */ + if (mw->size == size) + return (0); + + if (mw->size != 0) + ntb_free_mw(nt, num_mw); + /* Alloc memory for receiving data. Must be 4k aligned */ mw->size = size; mw->virt_addr = contigmalloc(mw->size, M_NTB_IF, M_ZERO, 0, BUS_SPACE_MAXADDR, mw->size, 0); if (mw->virt_addr == NULL) { + mw->size = 0; printf("ntb: Unable to allocate MW buffer of size %d\n", (int)mw->size); return (ENOMEM); |
