drivers/platform/x86/amd/pmc/pmc.c:717:37: warning: '%s' directive argument is null
From: kernel test robot
Date: Thu Jun 25 2026 - 03:23:30 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ab9de95c9cf952332ab79453b4b5d1bfca8e514f
commit: 428b9fd2dce50b4dc5cd9ade10b92efcf57ce7aa platform/x86/amd/pmc: Add delay_suspend module parameter
date: 2 weeks ago
config: x86_64-buildonly-randconfig-006-20260625 (https://download.01.org/0day-ci/archive/20260625/202606251540.Nr2BtaNu-lkp@xxxxxxxxx/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260625/202606251540.Nr2BtaNu-lkp@xxxxxxxxx/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Fixes: 428b9fd2dce5 ("platform/x86/amd/pmc: Add delay_suspend module parameter")
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202606251540.Nr2BtaNu-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
In file included from include/linux/device.h:15,
from include/linux/acpi.h:15,
from drivers/platform/x86/amd/pmc/pmc.c:13:
In function 'amd_pmc_want_suspend_delay',
inlined from 'amd_pmc_s2idle_check' at drivers/platform/x86/amd/pmc/pmc.c:763:6:
>> drivers/platform/x86/amd/pmc/pmc.c:717:37: warning: '%s' directive argument is null [-Wformat-overflow=]
717 | dev_info(pdev->dev, "Delaying suspend by 2.5s because delay_suspend=1. If this solves problems on your machine, please report this whole line to: platform-driver-x86@xxxxxxxxxxxxxxx so it can be automatically detected as affected in the future. System Vendor: \"%s\" Product Name: \"%s\" Product Family: \"%s\" Board Vendor: \"%s\" Board Name: \"%s\"\n",
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/dev_printk.h:110:30: note: in definition of macro 'dev_printk_index_wrap'
110 | _p_func(dev, fmt, ##__VA_ARGS__); \
| ^~~
include/linux/dev_printk.h:160:58: note: in expansion of macro 'dev_fmt'
160 | dev_printk_index_wrap(_dev_info, KERN_INFO, dev, dev_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~~
drivers/platform/x86/amd/pmc/pmc.c:717:17: note: in expansion of macro 'dev_info'
717 | dev_info(pdev->dev, "Delaying suspend by 2.5s because delay_suspend=1. If this solves problems on your machine, please report this whole line to: platform-driver-x86@xxxxxxxxxxxxxxx so it can be automatically detected as affected in the future. System Vendor: \"%s\" Product Name: \"%s\" Product Family: \"%s\" Board Vendor: \"%s\" Board Name: \"%s\"\n",
| ^~~~~~~~
drivers/platform/x86/amd/pmc/pmc.c: In function 'amd_pmc_s2idle_check':
drivers/platform/x86/amd/pmc/pmc.c:717:279: note: format string is defined here
717 | dev_info(pdev->dev, "Delaying suspend by 2.5s because delay_suspend=1. If this solves problems on your machine, please report this whole line to: platform-driver-x86@xxxxxxxxxxxxxxx so it can be automatically detected as affected in the future. System Vendor: \"%s\" Product Name: \"%s\" Product Family: \"%s\" Board Vendor: \"%s\" Board Name: \"%s\"\n",
| ^~
vim +717 drivers/platform/x86/amd/pmc/pmc.c
691
692 static bool amd_pmc_want_suspend_delay(struct amd_pmc_dev *pdev)
693 {
694 /*
695 * Some Lenovo Laptops (like different IdeaPad 3 Slims) need some
696 * me-time before sleeping or they get uncooperative after waking
697 * up and don't send events for keyboard and lid switch anymore.
698 *
699 * Unfortunately this doesn't entirely fix the problem: It can still
700 * happen when resuming with a timer (wakealarm), but at least the
701 * more common usecases (wakeup by opening lid or pressing a key)
702 * work fine with this workaround.
703 *
704 * See https://bugzilla.kernel.org/show_bug.cgi?id=221383
705 */
706 if (amd_pmc_quirk_need_suspend_delay(pdev)) {
707 /*
708 * delay_suspend=1 force-enables this, otherwise it can be
709 * disabled with disable_workarounds or delay_suspend=0
710 */
711 if (delay_suspend == 1 || (delay_suspend == -1 && !disable_workarounds)) {
712 dev_info(pdev->dev, "Delaying suspend by 2.5s to avoid platform bug\n");
713 return true;
714 }
715 dev_info(pdev->dev, "Not delaying suspend because of module parameter, even though your device is assumed to need it!\n");
716 } else if (delay_suspend == 1) {
> 717 dev_info(pdev->dev, "Delaying suspend by 2.5s because delay_suspend=1. If this solves problems on your machine, please report this whole line to: platform-driver-x86@xxxxxxxxxxxxxxx so it can be automatically detected as affected in the future. System Vendor: \"%s\" Product Name: \"%s\" Product Family: \"%s\" Board Vendor: \"%s\" Board Name: \"%s\"\n",
718 dmi_get_system_info(DMI_SYS_VENDOR),
719 dmi_get_system_info(DMI_PRODUCT_NAME),
720 dmi_get_system_info(DMI_PRODUCT_FAMILY),
721 dmi_get_system_info(DMI_BOARD_VENDOR),
722 dmi_get_system_info(DMI_BOARD_NAME));
723 return true;
724 }
725 return false;
726 }
727
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