evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

msm: ipa: Fix to polling mode

Browse source 
When IPA clock is enabled, suspend bit is cleared
and if pipe is non-empty EOT is posted internally.
At the same time, there is a possibility that SPS
driver posts EOT. This can result into incorrect
state of polling state and switch to intr mode is
tried repeatedly. Make a change to check if we are
in intr mode already in addition to the polling state.

Change-Id: I1af08605f7d2d234b0e5a4e3c8928db6cff5c7b4
Acked-by: Chaitanya Pratapa <cpratapa@qti.qualcomm.com>
Signed-off-by: Sridhar Ancha <sancha@codeaurora.org>
This commit is contained in:
Sridhar Ancha 2016-04-29 19:01:03 +05:30 • committed by Jeevan Shriram
parent c7ff58f93f
commit 01da6d8db6
2 changed files with 25 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
drivers/platform/msm/ipa/ipa_v2/ipa_dp.c
View file

@ -820,16 +820,23 @@ static void ipa_rx_switch_to_intr_mode(struct ipa_sys_context *sys)
return;
}
if (!atomic_read(&sys->curr_polling_state)) {
IPAERR("already in intr mode\n");
goto fail;
}
ret = sps_get_config(sys->ep->ep_hdl, &sys->ep->connect);
if (ret) {
IPAERR("sps_get_config() failed %d\n", ret);
goto fail;
}
if (!atomic_read(&sys->curr_polling_state) &&
((sys->ep->connect.options & SPS_O_EOT) == SPS_O_EOT)) {
IPADBG("already in intr mode\n");
return;
}
if (!atomic_read(&sys->curr_polling_state)) {
IPAERR("already in intr mode\n");
goto fail;
}
sys->event.options = SPS_O_EOT;
ret = sps_register_event(sys->ep->ep_hdl, &sys->event);
if (ret) {

18
drivers/platform/msm/ipa/ipa_v3/ipa_dp.c
View file

@ -882,12 +882,11 @@ static void ipa3_rx_switch_to_intr_mode(struct ipa3_sys_context *sys)
{
int ret;
if (!atomic_read(&sys->curr_polling_state)) {
IPAERR("already in intr mode\n");
goto fail;
}
if (ipa3_ctx->transport_prototype == IPA_TRANSPORT_TYPE_GSI) {
if (!atomic_read(&sys->curr_polling_state)) {
IPAERR("already in intr mode\n");
goto fail;
}
atomic_set(&sys->curr_polling_state, 0);
ipa3_dec_release_wakelock();
ret = gsi_config_channel_mode(sys->ep->gsi_chan_hdl,
@ -902,6 +901,15 @@ static void ipa3_rx_switch_to_intr_mode(struct ipa3_sys_context *sys)
IPAERR("sps_get_config() failed %d\n", ret);
goto fail;
}
if (!atomic_read(&sys->curr_polling_state) &&
((sys->ep->connect.options & SPS_O_EOT) == SPS_O_EOT)) {
IPADBG("already in intr mode\n");
return;
}
if (!atomic_read(&sys->curr_polling_state)) {
IPAERR("already in intr mode\n");
goto fail;
}
sys->event.options = SPS_O_EOT;
ret = sps_register_event(sys->ep->ep_hdl, &sys->event);
if (ret) {