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| author | KY Srinivasan <kys@microsoft.com> | 2015-07-22 21:42:32 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-07-27 02:40:36 +0300 |
| commit | b3e6b82a0099dfef038e40c630a554ed1e402504 (patch) | |
| tree | 2b0faa141fac0208fe8e0d74bd15dc53a76a0b29 /drivers/net/hyperv/hyperv_net.h | |
| parent | 402b764533e9d973952573df7ff96c41189e1a14 (diff) | |
| download | linux-b3e6b82a0099dfef038e40c630a554ed1e402504.tar.xz | |
hv_netvsc: Wait for sub-channels to be processed during probe
The current code returns from probe without waiting for the proper handling
of subchannels that may be requested. If the netvsc driver were to be rapidly
loaded/unloaded, we can trigger a panic as the unload will be tearing
down state that may not have been fully setup yet. We fix this issue by making
sure that we return from the probe call only after ensuring that the
sub-channel offers in flight are properly handled.
Reviewed-and-tested-by: Haiyang Zhang <haiyangz@microsoft.com
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/hyperv/hyperv_net.h')
| -rw-r--r-- | drivers/net/hyperv/hyperv_net.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h index 26cd14ccf4d5..925b75d4d910 100644 --- a/drivers/net/hyperv/hyperv_net.h +++ b/drivers/net/hyperv/hyperv_net.h @@ -671,6 +671,8 @@ struct netvsc_device { u32 send_table[VRSS_SEND_TAB_SIZE]; u32 max_chn; u32 num_chn; + spinlock_t sc_lock; /* Protects num_sc_offered variable */ + u32 num_sc_offered; atomic_t queue_sends[NR_CPUS]; /* Holds rndis device info */ |