net: ipa: don't use replenish_backlog

Rather than determining when to stop replenishing using the
replenish backlog, just stop when we have exhausted all available
transactions.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c
index f5367b9..fba8728 100644 (file)
--- a/drivers/net/ipa/ipa_endpoint.c
+++ b/drivers/net/ipa/ipa_endpoint.c
@@ -1087,11 +1087,8 @@ static void ipa_endpoint_replenish(struct ipa_endpoint *endpoint)
        if (test_and_set_bit(IPA_REPLENISH_ACTIVE, endpoint->replenish_flags))
                return;
 
-       while (atomic_dec_not_zero(&endpoint->replenish_backlog)) {
-               trans = ipa_endpoint_trans_alloc(endpoint, 1);
-               if (!trans)
-                       break;
-
+       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;