diff options
| author | Alex Elder <elder@linaro.org> | 2022-02-03 11:09:25 -0600 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-02-04 10:16:08 +0000 |
| commit | 09b337dedacaaab81ffc40c297e1bb9b3af6efa4 (patch) | |
| tree | a7e0749f2cc73936bd3de04d02998734fffb3f3d /drivers/net/ipa/ipa_endpoint.c | |
| parent | 5fc7f9ba2e510fe725f0fff6ddfe824f7184da03 (diff) | |
net: ipa: kill replenish_backlog
We no longer use the replenish_backlog atomic variable to decide
when we've got work to do providing receive buffers to hardware.
Basically, we try to keep the hardware as full as possible, all the
time. We keep supplying buffers until the hardware has no more
space for them.
As a result, we can get rid of the replenish_backlog field and the
atomic operations performed on it.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ipa/ipa_endpoint.c')
| -rw-r--r-- | drivers/net/ipa/ipa_endpoint.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c index b854a39c6992..9d875126a360 100644 --- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -1086,7 +1086,6 @@ static void ipa_endpoint_replenish(struct ipa_endpoint *endpoint) return; while ((trans = ipa_endpoint_trans_alloc(endpoint, 1))) { - WARN_ON(!atomic_dec_not_zero(&endpoint->replenish_backlog)); if (ipa_endpoint_replenish_one(endpoint, trans)) goto try_again_later; @@ -1105,9 +1104,6 @@ try_again_later: gsi_trans_free(trans); clear_bit(IPA_REPLENISH_ACTIVE, endpoint->replenish_flags); - /* The last one didn't succeed, so fix the backlog */ - atomic_inc(&endpoint->replenish_backlog); - /* Whenever a receive buffer transaction completes we'll try to * replenish again. It's unlikely, but if we fail to supply even * one buffer, nothing will trigger another replenish attempt. @@ -1346,7 +1342,6 @@ static void ipa_endpoint_rx_complete(struct ipa_endpoint *endpoint, struct page *page; ipa_endpoint_replenish(endpoint); - atomic_inc(&endpoint->replenish_backlog); if (trans->cancelled) return; @@ -1693,8 +1688,6 @@ static void ipa_endpoint_setup_one(struct ipa_endpoint *endpoint) */ clear_bit(IPA_REPLENISH_ENABLED, endpoint->replenish_flags); clear_bit(IPA_REPLENISH_ACTIVE, endpoint->replenish_flags); - atomic_set(&endpoint->replenish_backlog, - gsi_channel_tre_max(gsi, endpoint->channel_id)); INIT_DELAYED_WORK(&endpoint->replenish_work, ipa_endpoint_replenish_work); } |