diff options
| author | Alex Elder <elder@linaro.org> | 2020-10-09 15:28:48 -0500 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-10-09 16:04:07 -0700 |
| commit | d1704382821032fede445b816f4296fd379baacf (patch) | |
| tree | 0b0ae32ee9022bc277c3f47be3a95362dbf872c5 /drivers/net/ipa/ipa_endpoint.c | |
| parent | d3b2dc9472e1b76661bc381df4e26eaec3c9f2a8 (diff) | |
net: ipa: skip suspend/resume activities if not set up
When processing a system suspend request we suspend modem endpoints
if they are enabled, and call ipa_cmd_tag_process() (which issues
IPA commands) to ensure the IPA pipeline is cleared. It is an error
to attempt to issue an IPA command before setup is complete, so this
is clearly a bug. But we also shouldn't suspend or resume any
endpoints that have not been set up.
Have ipa_endpoint_suspend() and ipa_endpoint_resume() immediately
return if setup hasn't completed, to avoid any attempt to configure
endpoints or issue IPA commands in that case.
Fixes: 84f9bd12d46d ("soc: qcom: ipa: IPA endpoints")
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ipa/ipa_endpoint.c')
| -rw-r--r-- | drivers/net/ipa/ipa_endpoint.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c index b7efd7c95e9c..ed60fa5bcdac 100644 --- a/drivers/net/ipa/ipa_endpoint.c +++ b/drivers/net/ipa/ipa_endpoint.c @@ -1471,6 +1471,9 @@ void ipa_endpoint_resume_one(struct ipa_endpoint *endpoint) void ipa_endpoint_suspend(struct ipa *ipa) { + if (!ipa->setup_complete) + return; + if (ipa->modem_netdev) ipa_modem_suspend(ipa->modem_netdev); @@ -1482,6 +1485,9 @@ void ipa_endpoint_suspend(struct ipa *ipa) void ipa_endpoint_resume(struct ipa *ipa) { + if (!ipa->setup_complete) + return; + ipa_endpoint_resume_one(ipa->name_map[IPA_ENDPOINT_AP_COMMAND_TX]); ipa_endpoint_resume_one(ipa->name_map[IPA_ENDPOINT_AP_LAN_RX]); |