diff options
| author | Alex Elder <elder@linaro.org> | 2021-01-21 14:48:19 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-01-24 00:16:00 +0300 |
| commit | 223f5b34b409828b2f9a15d5e4ec0da0563d17ec (patch) | |
| tree | d7a150a3cf6784c89c4b08ca9b96727f9059d678 /drivers/net/ipa | |
| parent | 148604e7eafb2f6af275d60b9ab27e7a9622e93f (diff) | |
| download | linux-223f5b34b409828b2f9a15d5e4ec0da0563d17ec.tar.xz | |
net: ipa: have gsi_channel_update() return a value
Have gsi_channel_update() return the first transaction in the
updated completed transaction list, or NULL if no new transactions
have been added.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ipa')
| -rw-r--r-- | drivers/net/ipa/gsi.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c index 634f514e861e..6e5817e16c0f 100644 --- a/drivers/net/ipa/gsi.c +++ b/drivers/net/ipa/gsi.c @@ -1452,7 +1452,7 @@ void gsi_channel_doorbell(struct gsi_channel *channel) } /* Consult hardware, move any newly completed transactions to completed list */ -static void gsi_channel_update(struct gsi_channel *channel) +static struct gsi_trans *gsi_channel_update(struct gsi_channel *channel) { u32 evt_ring_id = channel->evt_ring_id; struct gsi *gsi = channel->gsi; @@ -1471,7 +1471,7 @@ static void gsi_channel_update(struct gsi_channel *channel) offset = GSI_EV_CH_E_CNTXT_4_OFFSET(evt_ring_id); index = gsi_ring_index(ring, ioread32(gsi->virt + offset)); if (index == ring->index % ring->count) - return; + return NULL; /* Get the transaction for the latest completed event. Take a * reference to keep it from completing before we give the events @@ -1496,6 +1496,8 @@ static void gsi_channel_update(struct gsi_channel *channel) gsi_evt_ring_doorbell(channel->gsi, channel->evt_ring_id, index); gsi_trans_free(trans); + + return gsi_channel_trans_complete(channel); } /** @@ -1516,11 +1518,8 @@ static struct gsi_trans *gsi_channel_poll_one(struct gsi_channel *channel) /* Get the first transaction from the completed list */ trans = gsi_channel_trans_complete(channel); - if (!trans) { - /* List is empty; see if there's more to do */ - gsi_channel_update(channel); - trans = gsi_channel_trans_complete(channel); - } + if (!trans) /* List is empty; see if there's more to do */ + trans = gsi_channel_update(channel); if (trans) gsi_trans_move_polled(trans); |