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firmware/psci: Print a warning if PSCI doesn't accept PC mode 

The function psci_pd_try_set_osi_mode() will print an error if enabling
OSI mode fails. To ease debugging PSCI issues print corresponding
message if switching to PC mode fails too.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20220926110249.666813-1-dmitry.baryshkov@linaro.org'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Dmitry Baryshkov 2022-09-26 14:02:49 +03:00 committed by Arnd Bergmann
parent f6f7d870c5
commit 998fcd001f
No known key found for this signature in database
GPG Key ID: 9A6C79EFE60018D9
2 changed files with 3 additions and 3 deletions
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4
drivers/cpuidle/cpuidle-psci-domain.c
View File

@ -124,10 +124,8 @@ static bool psci_pd_try_set_osi_mode(void)
return false;
ret = psci_set_osi_mode(true);
if (ret) {
pr_warn("failed to enable OSI mode: %d\n", ret);
if (ret)
return false;
}
return true;
}

2
drivers/firmware/psci/psci.c
View File

@ -163,6 +163,8 @@ int psci_set_osi_mode(bool enable)
PSCI_1_0_SUSPEND_MODE_PC;
err = invoke_psci_fn(PSCI_1_0_FN_SET_SUSPEND_MODE, suspend_mode, 0, 0);
if (err < 0)
pr_warn("failed to set %s mode: %d\n", enable ? "OSI" : "PC", err);
return psci_to_linux_errno(err);
}