diff options
Diffstat (limited to 'drivers/net/ipa/ipa_endpoint.c')
| -rw-r--r-- | drivers/net/ipa/ipa_endpoint.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c index a236edf5bf06..888e94278a84 100644 --- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -25,7 +25,8 @@ #define atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0) -#define IPA_REPLENISH_BATCH 16 +/* Hardware is told about receive buffers once a "batch" has been queued */ +#define IPA_REPLENISH_BATCH 16 /* Must be non-zero */ /* The amount of RX buffer space consumed by standard skb overhead */ #define IPA_RX_BUFFER_OVERHEAD (PAGE_SIZE - SKB_MAX_ORDER(NET_SKB_PAD, 0)) @@ -1086,14 +1087,15 @@ static void ipa_endpoint_replenish(struct ipa_endpoint *endpoint) return; while ((trans = ipa_endpoint_trans_alloc(endpoint, 1))) { + bool doorbell; + if (ipa_endpoint_replenish_one(endpoint, trans)) goto try_again_later; - if (++endpoint->replenish_ready == IPA_REPLENISH_BATCH) - endpoint->replenish_ready = 0; /* Ring the doorbell if we've got a full batch */ - gsi_trans_commit(trans, !endpoint->replenish_ready); + doorbell = !(++endpoint->replenish_count % IPA_REPLENISH_BATCH); + gsi_trans_commit(trans, doorbell); } clear_bit(IPA_REPLENISH_ACTIVE, endpoint->replenish_flags); @@ -1863,6 +1865,8 @@ u32 ipa_endpoint_init(struct ipa *ipa, u32 count, enum ipa_endpoint_name name; u32 filter_map; + BUILD_BUG_ON(!IPA_REPLENISH_BATCH); + if (!ipa_endpoint_data_valid(ipa, count, data)) return 0; /* Error */ |