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msm: ipa3: add new mutex lock to update is_modem_up flag

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Adding new mutex lock to update is_modem_up flag because
in Modem SSR scenarios if we use mutex variable "lock" it
is waiting for it to be released by other thread & partially
leading to SSR timeout. As we don't need to have a common
mutex variable "lock" for this, a new mutex can help in moving
further in clean up the pipes.

Change-Id: I8e6e4c0181f7765b334aefefd9616329503fdc2c
Signed-off-by: Pavan Kumar M <quic_rpavan@quicinc.com>
Signed-off-by: Jagadeesh Ponduru <quic_jponduru@quicinc.com>
This commit is contained in:
Jagadeesh Ponduru
2022-10-20 14:52:48 +05:30
committed by Pavan Kumar M
parent 6bbe15d334
commit 2536b39004
3 changed files with 6 additions and 4 deletions
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1
drivers/platform/msm/ipa/ipa_v3/ipa.c
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@@ -9874,6 +9874,7 @@ static int ipa3_pre_init(const struct ipa3_plat_drv_res *resource_p,
ipa3_ctx->free_page_task_scheduled = false;
mutex_init(&ipa3_ctx->app_clock_vote.mutex);
mutex_init(&ipa3_ctx->ssr_lock);
ipa3_ctx->is_modem_up = false;
ipa3_ctx->mhi_ctrl_state = IPA_MHI_CTRL_NOT_SETUP;

1
drivers/platform/msm/ipa/ipa_v3/ipa_i.h
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@@ -2635,6 +2635,7 @@ struct ipa3_context {
struct ipa3_page_recycle_stats prev_default_recycle_stats;
struct ipa3_page_recycle_stats prev_low_lat_data_recycle_stats;
struct mutex recycle_stats_collection_lock;
struct mutex ssr_lock;
};
struct ipa3_plat_drv_res {

8
drivers/platform/msm/ipa/ipa_v3/ipa_utils.c
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@@ -13932,17 +13932,17 @@ bool ipa3_is_modem_up(void)
{
bool is_up;
mutex_lock(&ipa3_ctx->lock);
mutex_lock(&ipa3_ctx->ssr_lock);
is_up = ipa3_ctx->is_modem_up;
mutex_unlock(&ipa3_ctx->lock);
mutex_unlock(&ipa3_ctx->ssr_lock);
return is_up;
}
void ipa3_set_modem_up(bool is_up)
{
mutex_lock(&ipa3_ctx->lock);
mutex_lock(&ipa3_ctx->ssr_lock);
ipa3_ctx->is_modem_up = is_up;
mutex_unlock(&ipa3_ctx->lock);
mutex_unlock(&ipa3_ctx->ssr_lock);
}
/**