[PATCH net-next v2 6/6] net: ipa: don't pass size to ipa_cmd_transfer_add()
From: Alex Elder <hidden>
Date: 2021-01-27 01:51:47
Also in:
lkml
Subsystem:
networking drivers, qcom ipa driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Alex Elder, Linus Torvalds
The only time we transfer data (rather than issuing a command) out of the AP->command TX endpoint is when we're clearing the hardware pipeline. All that's needed is a "small" data buffer, and its contents aren't even important. For convenience, we just transfer a command structure in this case (it's already mapped for DMA). The TRE is added to a transaction using ipa_cmd_ip_tag_status_add(), but we ignore the size value provided to that function. So just get rid of the size argument. Signed-off-by: Alex Elder <redacted> --- drivers/net/ipa/ipa_cmd.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ipa/ipa_cmd.c b/drivers/net/ipa/ipa_cmd.c
index eb50e7437359a..97b50fee60089 100644
--- a/drivers/net/ipa/ipa_cmd.c
+++ b/drivers/net/ipa/ipa_cmd.c@@ -550,7 +550,7 @@ static void ipa_cmd_ip_tag_status_add(struct gsi_trans *trans) } /* Issue a small command TX data transfer */ -static void ipa_cmd_transfer_add(struct gsi_trans *trans, u16 size) +static void ipa_cmd_transfer_add(struct gsi_trans *trans) { struct ipa *ipa = container_of(trans->gsi, struct ipa, gsi); enum dma_data_direction direction = DMA_TO_DEVICE;
@@ -558,8 +558,6 @@ static void ipa_cmd_transfer_add(struct gsi_trans *trans, u16 size) union ipa_cmd_payload *payload; dma_addr_t payload_addr; - /* assert(size <= sizeof(*payload)); */ - /* Just transfer a zero-filled payload structure */ payload = ipa_cmd_payload_alloc(ipa, &payload_addr);
@@ -590,7 +588,7 @@ void ipa_cmd_pipeline_clear_add(struct gsi_trans *trans) endpoint = ipa->name_map[IPA_ENDPOINT_AP_LAN_RX]; ipa_cmd_ip_packet_init_add(trans, endpoint->endpoint_id); ipa_cmd_ip_tag_status_add(trans); - ipa_cmd_transfer_add(trans, 4); + ipa_cmd_transfer_add(trans); } /* Returns the number of commands required to clear the pipeline */
--
2.20.1