This is a note to let you know that I've just added the patch titled rtw88: avoid unused function warnings to the 5.6-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: rtw88-avoid-unused-function-warnings.patch and it can be found in the queue-5.6 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit cca92987f08628b3dd86df7599b91b6df8768746 Author: Arnd Bergmann <arnd@xxxxxxxx> Date: Wed Apr 8 20:53:51 2020 +0200 rtw88: avoid unused function warnings commit 7dc7c41607d192ff660ba4ea82d517745c1d7523 upstream. The rtw88 driver defines emtpy functions with multiple indirections but gets one of these wrong: drivers/net/wireless/realtek/rtw88/pci.c:1347:12: error: 'rtw_pci_resume' defined but not used [-Werror=unused-function] 1347 | static int rtw_pci_resume(struct device *dev) | ^~~~~~~~~~~~~~ drivers/net/wireless/realtek/rtw88/pci.c:1342:12: error: 'rtw_pci_suspend' defined but not used [-Werror=unused-function] 1342 | static int rtw_pci_suspend(struct device *dev) Better simplify it to rely on the conditional reference in SIMPLE_DEV_PM_OPS(), and mark the functions as __maybe_unused to avoid warning about it. I'm not sure if these are needed at all given that the functions don't do anything, but they were only recently added. Fixes: 44bc17f7f5b3 ("rtw88: support wowlan feature for 8822c") Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20200408185413.218643-1-arnd@xxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> diff --git a/drivers/net/wireless/realtek/rtw88/pci.c b/drivers/net/wireless/realtek/rtw88/pci.c index 1fbc14c149ec9..fbaad23e8eb12 100644 --- a/drivers/net/wireless/realtek/rtw88/pci.c +++ b/drivers/net/wireless/realtek/rtw88/pci.c @@ -1287,22 +1287,17 @@ static void rtw_pci_phy_cfg(struct rtw_dev *rtwdev) rtw_pci_link_cfg(rtwdev); } -#ifdef CONFIG_PM -static int rtw_pci_suspend(struct device *dev) +static int __maybe_unused rtw_pci_suspend(struct device *dev) { return 0; } -static int rtw_pci_resume(struct device *dev) +static int __maybe_unused rtw_pci_resume(struct device *dev) { return 0; } static SIMPLE_DEV_PM_OPS(rtw_pm_ops, rtw_pci_suspend, rtw_pci_resume); -#define RTW_PM_OPS (&rtw_pm_ops) -#else -#define RTW_PM_OPS NULL -#endif static int rtw_pci_claim(struct rtw_dev *rtwdev, struct pci_dev *pdev) { @@ -1530,7 +1525,7 @@ static struct pci_driver rtw_pci_driver = { .id_table = rtw_pci_id_table, .probe = rtw_pci_probe, .remove = rtw_pci_remove, - .driver.pm = RTW_PM_OPS, + .driver.pm = &rtw_pm_ops, }; module_pci_driver(rtw_pci_driver);