diff options
| author | Alex Elder <elder@linaro.org> | 2021-11-12 16:22:09 -0600 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-11-15 13:25:45 +0000 |
| commit | 6e228d8cbb1cc6ba78022d406340e901e08d26e0 (patch) | |
| tree | 10d7a3051260bda0df724b8b4211dbe26c317ee2 /drivers/net/ipa | |
| parent | 10a2308ffb8cf262e473eb324fde42ae31b6da04 (diff) | |
net: ipa: HOLB register sometimes must be written twice
Starting with IPA v4.5, the HOL_BLOCK_EN register must be written
twice when enabling head-of-line blocking avoidance.
Fixes: 84f9bd12d46db ("soc: qcom: ipa: IPA endpoints")
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ipa')
| -rw-r--r-- | drivers/net/ipa/ipa_endpoint.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c index 5528d97110d5..006da4642a0b 100644 --- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -868,6 +868,9 @@ ipa_endpoint_init_hol_block_enable(struct ipa_endpoint *endpoint, bool enable) val = enable ? HOL_BLOCK_EN_FMASK : 0; offset = IPA_REG_ENDP_INIT_HOL_BLOCK_EN_N_OFFSET(endpoint_id); iowrite32(val, endpoint->ipa->reg_virt + offset); + /* When enabling, the register must be written twice for IPA v4.5+ */ + if (enable && endpoint->ipa->version >= IPA_VERSION_4_5) + iowrite32(val, endpoint->ipa->reg_virt + offset); } void ipa_endpoint_modem_hol_block_clear_all(struct ipa *ipa) |