From e7340f04426416a6655ffaead4651bfb9e1b0848 Mon Sep 17 00:00:00 2001 From: Robert Walsh Date: Mon, 18 Jun 2007 14:24:35 -0700 Subject: IB/ipath: Fix maximum MTU reporting Although our chip supports 4K MTUs, our driver doesn't yet support this feature, so limit the maximum MTU to 2K until we get support for 4K MTUs implemented. Signed-off-by: Robert Walsh Signed-off-by: Roland Dreier --- drivers/infiniband/hw/ipath/ipath_fs.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers/infiniband/hw/ipath/ipath_fs.c') diff --git a/drivers/infiniband/hw/ipath/ipath_fs.c b/drivers/infiniband/hw/ipath/ipath_fs.c index ebd5c7bd2cdb..40cf1bc90d74 100644 --- a/drivers/infiniband/hw/ipath/ipath_fs.c +++ b/drivers/infiniband/hw/ipath/ipath_fs.c @@ -257,9 +257,14 @@ static ssize_t atomic_port_info_read(struct file *file, char __user *buf, /* Notimpl InitType (actually, an SMA decision) */ /* VLHighLimit is 0 (only one VL) */ ; /* VLArbitrationHighCap is 0 (only one VL) */ + /* + * Note: the chips support a maximum MTU of 4096, but the driver + * hasn't implemented this feature yet, so set the maximum + * to 2048. + */ portinfo[10] = /* VLArbitrationLowCap is 0 (only one VL) */ /* InitTypeReply is SMA decision */ - (5 << 16) /* MTUCap 4096 */ + (4 << 16) /* MTUCap 2048 */ | (7 << 13) /* VLStallCount */ | (0x1f << 8) /* HOQLife */ | (1 << 4) -- cgit v1.2.1