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ipa3: Changes to keep IPA clock voted in shutdown notifier

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Adding changes to avoid unclocked access in shutdown notifier.
Increasing the IPA clock vote before saving the IPA registers.

Signed-off-by: Sivakanth vaka<svaka@codeaurora.org>
This commit is contained in:
Sivakanth Vaka 2021-05-17 11:05:43 +05:30 committed by Sivakanth vaka
parent 09db99a158
commit 9a4b400adb
1 changed files with 14 additions and 1 deletions
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15
drivers/platform/msm/ipa/ipa_v3/ipa.c
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@ -9098,9 +9098,22 @@ static void ipa_smmu_update_fw_loader(void)
void ipa3_plat_drv_shutdown(struct platform_device *pdev_p)
{
int res;
struct ipa_active_client_logging_info log_info;
pr_debug("ipa: driver shutdown invoked for %s\n",
pdev_p->dev.of_node->name);
if (ipa3_ctx && atomic_read(&ipa3_ctx->ipa_clk_vote)) {
if(unlikely(!ipa3_ctx))
{
IPAERR("IPA driver not initialized\n");
return;
}
/* Make sure IPA clock voted when collecting the reg dump */
IPA_ACTIVE_CLIENTS_PREP_SPECIAL(log_info, "SHUTDOWN_VOTE");
res = ipa3_inc_client_enable_clks_no_block(&log_info);
if (res) {
IPAERR("IPA clk off not saving the IPA registers\n");
} else {
ipahal_print_all_regs(false);
ipa_save_registers();
}