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msm: ipa3: Changes to keep IPA clock voted in panic notifier

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

Change-Id: Ie055ffa844df45b8a65603190495bc2d1cc3f84a
Signed-off-by: Ashok Vuyyuru <avuyyuru@codeaurora.org>
This commit is contained in:
Ashok Vuyyuru 2021-05-06 18:22:58 +05:30
parent e2030525a3
commit 5a14f85c0f
1 changed files with 7 additions and 1 deletions
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8
drivers/platform/msm/ipa/ipa_v3/ipa.c
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@ -6023,6 +6023,7 @@ static int ipa3_panic_notifier(struct notifier_block *this,
unsigned long event, void *ptr)
{
int res;
struct ipa_active_client_logging_info log_info;
ipa3_freeze_clock_vote_and_notify_modem();
@ -6031,7 +6032,12 @@ static int ipa3_panic_notifier(struct notifier_block *this,
if (res)
IPAERR("uC panic handler failed %d\n", res);
if (atomic_read(&ipa3_ctx->ipa_clk_vote)) {
/* Make sure IPA clock voted when collecting the reg dump */
IPA_ACTIVE_CLIENTS_PREP_SPECIAL(log_info, "PANIC_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();
ipa_wigig_save_regs();