[PATCH net-next 2/5] net: ipa: metadata_mask register is RX only

[Alex Elder]

The INIT_HDR_METADATA_MASK endpoint configuration register is only
valid for RX endpoints.  Rather than writing a zero to that register
for TX endpoints, avoid writing the register at all.

Signed-off-by: Alex Elder <el...@linaro.org>
---
 drivers/net/ipa/ipa_endpoint.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c
index 3f5a41fc1997..0c2bec166066 100644
--- a/drivers/net/ipa/ipa_endpoint.c
+++ b/drivers/net/ipa/ipa_endpoint.c
@@ -527,10 +527,12 @@ static void ipa_endpoint_init_hdr_metadata_mask(struct 
ipa_endpoint *endpoint)
        u32 val = 0;
        u32 offset;
 
+       /* assert(!endpoint->toward_ipa); */
+
        offset = IPA_REG_ENDP_INIT_HDR_METADATA_MASK_N_OFFSET(endpoint_id);
 
        /* Note that HDR_ENDIANNESS indicates big endian header fields */
-       if (!endpoint->toward_ipa && endpoint->data->qmap)
+       if (endpoint->data->qmap)
                val = cpu_to_be32(IPA_ENDPOINT_QMAP_METADATA_MASK);
 
        iowrite32(val, endpoint->ipa->reg_virt + offset);
@@ -1306,10 +1308,10 @@ static void ipa_endpoint_program(struct ipa_endpoint 
*endpoint)
                        (void)ipa_endpoint_program_suspend(endpoint, false);
                ipa_endpoint_init_hdr_ext(endpoint);
                ipa_endpoint_init_aggr(endpoint);
+               ipa_endpoint_init_hdr_metadata_mask(endpoint);
        }
        ipa_endpoint_init_cfg(endpoint);
        ipa_endpoint_init_hdr(endpoint);
-       ipa_endpoint_init_hdr_metadata_mask(endpoint);
        ipa_endpoint_init_mode(endpoint);
        ipa_endpoint_status(endpoint);
 }
-- 
2.25.1