diff options
| author | Dean Luick <dean.luick@intel.com> | 2016-03-05 16:49:45 (GMT) |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-03-17 19:55:13 (GMT) |
| commit | 78eb129d47f553e6f0607c393ebf4e9851edd73e (patch) | |
| tree | c4b4c342d93599047bde4308e060dbaf4f12db98 /drivers/staging/rdma/hfi1/init.c | |
| parent | 3afb6f637e8edd68cee35b5c432c176f57fd712f (diff) | |
| download | linux-78eb129d47f553e6f0607c393ebf4e9851edd73e.tar.xz | |
IB/hfi1: Add shared ASIC structure
Create a shared structure to exist between devices that share the
same ASIC.
Reviewed-by: Mitko Haralanov <mitko.haralanov@intel.com>
Reviewed-by: Easwar Hariharan <easwar.hariharan@intel.com>
Signed-off-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/staging/rdma/hfi1/init.c')
| -rw-r--r-- | drivers/staging/rdma/hfi1/init.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/staging/rdma/hfi1/init.c b/drivers/staging/rdma/hfi1/init.c index 37b3ce8..260a8e1 100644 --- a/drivers/staging/rdma/hfi1/init.c +++ b/drivers/staging/rdma/hfi1/init.c @@ -974,6 +974,25 @@ void hfi1_free_ctxtdata(struct hfi1_devdata *dd, struct hfi1_ctxtdata *rcd) kfree(rcd); } +/* + * Release our hold on the shared asic data. If we are the last one, + * free the structure. Must be holding hfi1_devs_lock. + */ +static void release_asic_data(struct hfi1_devdata *dd) +{ + int other; + + if (!dd->asic_data) + return; + dd->asic_data->dds[dd->hfi1_id] = NULL; + other = dd->hfi1_id ? 0 : 1; + if (!dd->asic_data->dds[other]) { + /* we are the last holder, free it */ + kfree(dd->asic_data); + } + dd->asic_data = NULL; +} + void hfi1_free_devdata(struct hfi1_devdata *dd) { unsigned long flags; @@ -981,6 +1000,7 @@ void hfi1_free_devdata(struct hfi1_devdata *dd) spin_lock_irqsave(&hfi1_devs_lock, flags); idr_remove(&hfi1_unit_table, dd->unit); list_del(&dd->list); + release_asic_data(dd); spin_unlock_irqrestore(&hfi1_devs_lock, flags); free_platform_config(dd); rcu_barrier(); /* wait for rcu callbacks to complete */ |