| Message ID | 20210110232705.20658-1-digetx@gmail.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | [v1,1/2] cpuidle: tegra: Fix C7 idling state on Tegra114 | expand |
diff --git a/drivers/cpuidle/cpuidle-tegra.c b/drivers/cpuidle/cpuidle-tegra.c index ecc5d9b31553..49531939f24b 100644 --- a/drivers/cpuidle/cpuidle-tegra.c +++ b/drivers/cpuidle/cpuidle-tegra.c @@ -135,13 +135,13 @@ static int tegra_cpuidle_c7_enter(void) { int err; - if (tegra_cpuidle_using_firmware()) { - err = call_firmware_op(prepare_idle, TF_PM_MODE_LP2_NOFLUSH_L2); - if (err) - return err; + err = call_firmware_op(prepare_idle, TF_PM_MODE_LP2_NOFLUSH_L2); + if (err && err != -ENOSYS) + return err; - return call_firmware_op(do_idle, 0); - } + err = call_firmware_op(do_idle, 0); + if (err != -ENOSYS) + return err; return cpu_suspend(0, tegra30_pm_secondary_cpu_suspend); }
Trusted Foundation firmware doesn't implement the do_idle call and in this case suspending should fall back to the common suspend path. In order to fix this issue we will unconditionally set the NOFLUSH_L2 mode via firmware call, which is a NO-OP on Tegra30/124, and then proceed to the C7 idling, like it was done by the older Tegra114 cpuidle driver. Fixes: 14e086baca50 ("cpuidle: tegra: Squash Tegra114 driver into the common driver") Cc: stable@vger.kernel.org # 5.7+ Reported-by: Anton Bambura <jenneron@protonmail.com> Tested-by: Anton Bambura <jenneron@protonmail.com> Tested-by: Matt Merhar <mattmerhar@protonmail.com> Tested-by: Peter Geis <pgwipeout@gmail.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- drivers/cpuidle/cpuidle-tegra.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)