diff options
| author | Dave Jiang | 2017-07-29 00:10:48 +0200 |
|---|---|---|
| committer | Jon Mason | 2017-08-01 19:31:44 +0200 |
| commit | f3fd2afed8eee91620d05b69ab94c14793c849d7 (patch) | |
| tree | 7f97044f2119afca5f691e9345fa0b2356373b66 | |
| parent | ntb: use correct mw_count function in ntb_tool and ntb_transport (diff) | |
| download | kernel-qcow2-linux-f3fd2afed8eee91620d05b69ab94c14793c849d7.tar.gz kernel-qcow2-linux-f3fd2afed8eee91620d05b69ab94c14793c849d7.tar.xz kernel-qcow2-linux-f3fd2afed8eee91620d05b69ab94c14793c849d7.zip | |
ntb: transport shouldn't disable link due to bogus values in SPADs
It seems that under certain scenarios the SPAD can have bogus values caused
by an agent (i.e. BIOS or other software) that is not the kernel driver, and
that causes memory window setup failure. This should not cause the link to
be disabled because if we do that, the driver will never recover again. We
have verified in testing that this issue happens and prevents proper link
recovery.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Allen Hubbe <Allen.Hubbe@dell.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Fixes: 84f766855f61 ("ntb: stop link work when we do not have memory")
| -rw-r--r-- | drivers/ntb/ntb_transport.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c index b29558ddfe95..f58d8e305323 100644 --- a/drivers/ntb/ntb_transport.c +++ b/drivers/ntb/ntb_transport.c @@ -924,10 +924,8 @@ out1: ntb_free_mw(nt, i); /* if there's an actual failure, we should just bail */ - if (rc < 0) { - ntb_link_disable(ndev); + if (rc < 0) return; - } out: if (ntb_link_is_up(ndev, NULL, NULL) == 1) |