diff options
| author | Alex Elder <elder@linaro.org> | 2021-11-13 01:22:10 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-11-15 16:25:45 +0300 |
| commit | 816316cacad2b5abd5b41423cf04e4845239abd4 (patch) | |
| tree | 2fbef5cfefd22e645204e2d77eb39a54a46d7f0b /drivers | |
| parent | 6e228d8cbb1cc6ba78022d406340e901e08d26e0 (diff) | |
| download | linux-816316cacad2b5abd5b41423cf04e4845239abd4.tar.xz | |
net: ipa: disable HOLB drop when updating timer
The head-of-line blocking timer should only be modified when
head-of-line drop is disabled.
One of the steps in recovering from a modem crash is to enable
dropping of packets with timeout of 0 (immediate). We don't know
how the modem configured its endpoints, so before we program the
timer, we need to ensure HOL_BLOCK is disabled.
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')
| -rw-r--r-- | drivers/net/ipa/ipa_endpoint.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c index 006da4642a0b..ef790fd0ab56 100644 --- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -853,6 +853,7 @@ static void ipa_endpoint_init_hol_block_timer(struct ipa_endpoint *endpoint, u32 offset; u32 val; + /* This should only be changed when HOL_BLOCK_EN is disabled */ offset = IPA_REG_ENDP_INIT_HOL_BLOCK_TIMER_N_OFFSET(endpoint_id); val = hol_block_timer_val(ipa, microseconds); iowrite32(val, ipa->reg_virt + offset); @@ -883,6 +884,7 @@ void ipa_endpoint_modem_hol_block_clear_all(struct ipa *ipa) if (endpoint->toward_ipa || endpoint->ee_id != GSI_EE_MODEM) continue; + ipa_endpoint_init_hol_block_enable(endpoint, false); ipa_endpoint_init_hol_block_timer(endpoint, 0); ipa_endpoint_init_hol_block_enable(endpoint, true); } |