[ Upstream commit
146b6f6855e7656e8329910606595220c761daac ]
Power source notify handler is getting registered even when none of the
PMF feature in enabled leading to a crash.
...
[ 22.592162] Call Trace:
[ 22.592164] <TASK>
[ 22.592164] ? rcu_note_context_switch+0x5e0/0x660
[ 22.592166] ? __warn+0x81/0x130
[ 22.592171] ? rcu_note_context_switch+0x5e0/0x660
[ 22.592172] ? report_bug+0x171/0x1a0
[ 22.592175] ? prb_read_valid+0x1b/0x30
[ 22.592177] ? handle_bug+0x3c/0x80
[ 22.592178] ? exc_invalid_op+0x17/0x70
[ 22.592179] ? asm_exc_invalid_op+0x1a/0x20
[ 22.592182] ? rcu_note_context_switch+0x5e0/0x660
[ 22.592183] ? acpi_ut_delete_object_desc+0x86/0xb0
[ 22.592186] ? acpi_ut_update_ref_count.part.0+0x22d/0x930
[ 22.592187] __schedule+0xc0/0x1410
[ 22.592189] ? ktime_get+0x3c/0xa0
[ 22.592191] ? lapic_next_event+0x1d/0x30
[ 22.592193] ? hrtimer_start_range_ns+0x25b/0x350
[ 22.592196] schedule+0x5e/0xd0
[ 22.592197] schedule_hrtimeout_range_clock+0xbe/0x140
[ 22.592199] ? __pfx_hrtimer_wakeup+0x10/0x10
[ 22.592200] usleep_range_state+0x64/0x90
[ 22.592203] amd_pmf_send_cmd+0x106/0x2a0 [amd_pmf
bddfe0fe3712aaa99acce3d5487405c5213c6616]
[ 22.592207] amd_pmf_update_slider+0x56/0x1b0 [amd_pmf
bddfe0fe3712aaa99acce3d5487405c5213c6616]
[ 22.592210] amd_pmf_set_sps_power_limits+0x72/0x80 [amd_pmf
bddfe0fe3712aaa99acce3d5487405c5213c6616]
[ 22.592213] amd_pmf_pwr_src_notify_call+0x49/0x90 [amd_pmf
bddfe0fe3712aaa99acce3d5487405c5213c6616]
[ 22.592216] notifier_call_chain+0x5a/0xd0
[ 22.592218] atomic_notifier_call_chain+0x32/0x50
...
Fix this by moving the registration of source change notify handler only
when SPS(Static Slider) is advertised as supported.
Reported-by: Allen Zhong <allen@atr.me>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217571
Fixes:
4c71ae414474 ("platform/x86/amd/pmf: Add support SPS PMF feature")
Tested-by: Patil Rajesh Reddy <Patil.Reddy@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20230622060309.310001-1-Shyam-sundar.S-k@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
/* Enable Static Slider */
if (is_apmf_func_supported(dev, APMF_FUNC_STATIC_SLIDER_GRANULAR)) {
amd_pmf_init_sps(dev);
+ dev->pwr_src_notifier.notifier_call = amd_pmf_pwr_src_notify_call;
+ power_supply_reg_notifier(&dev->pwr_src_notifier);
dev_dbg(dev->dev, "SPS enabled and Platform Profiles registered\n");
}
static void amd_pmf_deinit_features(struct amd_pmf_dev *dev)
{
- if (is_apmf_func_supported(dev, APMF_FUNC_STATIC_SLIDER_GRANULAR))
+ if (is_apmf_func_supported(dev, APMF_FUNC_STATIC_SLIDER_GRANULAR)) {
+ power_supply_unreg_notifier(&dev->pwr_src_notifier);
amd_pmf_deinit_sps(dev);
+ }
if (is_apmf_func_supported(dev, APMF_FUNC_AUTO_MODE)) {
amd_pmf_deinit_auto_mode(dev);
apmf_install_handler(dev);
amd_pmf_dbgfs_register(dev);
- dev->pwr_src_notifier.notifier_call = amd_pmf_pwr_src_notify_call;
- power_supply_reg_notifier(&dev->pwr_src_notifier);
-
dev_info(dev->dev, "registered PMF device successfully\n");
return 0;
{
struct amd_pmf_dev *dev = platform_get_drvdata(pdev);
- power_supply_unreg_notifier(&dev->pwr_src_notifier);
amd_pmf_deinit_features(dev);
apmf_acpi_deinit(dev);
amd_pmf_dbgfs_unregister(dev);