From: Nathan Chancellor <nathan@kernel.org> To: Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run> Cc: Abhinav Kumar <quic_abhinavk@quicinc.com>, Dmitry Baryshkov <dmitry.baryshkov@linaro.org>, linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, patches@lists.linux.dev, Nathan Chancellor <nathan@kernel.org> Subject: [PATCH v2] drm/msm/gpu: Avoid -Wunused-function with !CONFIG_PM_SLEEP Date: Mon, 11 Apr 2022 11:12:50 -0700 [thread overview] Message-ID: <20220411181249.2758344-1-nathan@kernel.org> (raw) When building with CONFIG_PM=y and CONFIG_PM_SLEEP=n (such as ARCH=riscv allmodconfig), the following warnings/errors occur: drivers/gpu/drm/msm/adreno/adreno_device.c:679:12: error: 'adreno_system_resume' defined but not used [-Werror=unused-function] 679 | static int adreno_system_resume(struct device *dev) | ^~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/msm/adreno/adreno_device.c:655:12: error: 'adreno_system_suspend' defined but not used [-Werror=unused-function] 655 | static int adreno_system_suspend(struct device *dev) | ^~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors These functions are only used in SET_SYSTEM_SLEEP_PM_OPS(), which evaluates to empty when CONFIG_PM_SLEEP is not set, making these functions unused. To resolve this, use the SYSTEM_SLEEP_PM_OPS() and RUNTIME_PM_OPS() macros, which were introduced in commit 1a3c7bb08826 ("PM: core: Add new *_PM_OPS macros, deprecate old ones"). They are designed to avoid these compiler warnings while still guarding their use on CONFIG_PM{,_SLEEP}=y. Fixes: 7e4167c9e021 ("drm/msm/gpu: Park scheduler threads for system suspend") Signed-off-by: Nathan Chancellor <nathan@kernel.org> --- v1 -> v2: https://lore.kernel.org/20220330180541.62250-1-nathan@kernel.org/ * Avoid using #ifdef altogether by using new PM macros. drivers/gpu/drm/msm/adreno/adreno_device.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c index 661dfa7681fb..8706bcdd1472 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_device.c +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c @@ -599,7 +599,6 @@ static const struct of_device_id dt_match[] = { {} }; -#ifdef CONFIG_PM static int adreno_runtime_resume(struct device *dev) { struct msm_gpu *gpu = dev_to_gpu(dev); @@ -682,11 +681,9 @@ static int adreno_system_resume(struct device *dev) return pm_runtime_force_resume(dev); } -#endif - static const struct dev_pm_ops adreno_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(adreno_system_suspend, adreno_system_resume) - SET_RUNTIME_PM_OPS(adreno_runtime_suspend, adreno_runtime_resume, NULL) + SYSTEM_SLEEP_PM_OPS(adreno_system_suspend, adreno_system_resume) + RUNTIME_PM_OPS(adreno_runtime_suspend, adreno_runtime_resume, NULL) }; static struct platform_driver adreno_driver = { base-commit: 0fe35b8dcb8b3c4b751a1a44f1e128b690af71e4 -- 2.35.1
WARNING: multiple messages have this Message-ID (diff)
From: Nathan Chancellor <nathan@kernel.org> To: Rob Clark <robdclark@gmail.com>, Sean Paul <sean@poorly.run> Cc: linux-arm-msm@vger.kernel.org, Abhinav Kumar <quic_abhinavk@quicinc.com>, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Nathan Chancellor <nathan@kernel.org>, patches@lists.linux.dev, Dmitry Baryshkov <dmitry.baryshkov@linaro.org>, freedreno@lists.freedesktop.org Subject: [PATCH v2] drm/msm/gpu: Avoid -Wunused-function with !CONFIG_PM_SLEEP Date: Mon, 11 Apr 2022 11:12:50 -0700 [thread overview] Message-ID: <20220411181249.2758344-1-nathan@kernel.org> (raw) When building with CONFIG_PM=y and CONFIG_PM_SLEEP=n (such as ARCH=riscv allmodconfig), the following warnings/errors occur: drivers/gpu/drm/msm/adreno/adreno_device.c:679:12: error: 'adreno_system_resume' defined but not used [-Werror=unused-function] 679 | static int adreno_system_resume(struct device *dev) | ^~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/msm/adreno/adreno_device.c:655:12: error: 'adreno_system_suspend' defined but not used [-Werror=unused-function] 655 | static int adreno_system_suspend(struct device *dev) | ^~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors These functions are only used in SET_SYSTEM_SLEEP_PM_OPS(), which evaluates to empty when CONFIG_PM_SLEEP is not set, making these functions unused. To resolve this, use the SYSTEM_SLEEP_PM_OPS() and RUNTIME_PM_OPS() macros, which were introduced in commit 1a3c7bb08826 ("PM: core: Add new *_PM_OPS macros, deprecate old ones"). They are designed to avoid these compiler warnings while still guarding their use on CONFIG_PM{,_SLEEP}=y. Fixes: 7e4167c9e021 ("drm/msm/gpu: Park scheduler threads for system suspend") Signed-off-by: Nathan Chancellor <nathan@kernel.org> --- v1 -> v2: https://lore.kernel.org/20220330180541.62250-1-nathan@kernel.org/ * Avoid using #ifdef altogether by using new PM macros. drivers/gpu/drm/msm/adreno/adreno_device.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c index 661dfa7681fb..8706bcdd1472 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_device.c +++ b/drivers/gpu/drm/msm/adreno/adreno_device.c @@ -599,7 +599,6 @@ static const struct of_device_id dt_match[] = { {} }; -#ifdef CONFIG_PM static int adreno_runtime_resume(struct device *dev) { struct msm_gpu *gpu = dev_to_gpu(dev); @@ -682,11 +681,9 @@ static int adreno_system_resume(struct device *dev) return pm_runtime_force_resume(dev); } -#endif - static const struct dev_pm_ops adreno_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(adreno_system_suspend, adreno_system_resume) - SET_RUNTIME_PM_OPS(adreno_runtime_suspend, adreno_runtime_resume, NULL) + SYSTEM_SLEEP_PM_OPS(adreno_system_suspend, adreno_system_resume) + RUNTIME_PM_OPS(adreno_runtime_suspend, adreno_runtime_resume, NULL) }; static struct platform_driver adreno_driver = { base-commit: 0fe35b8dcb8b3c4b751a1a44f1e128b690af71e4 -- 2.35.1
next reply other threads:[~2022-04-11 18:14 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-04-11 18:12 Nathan Chancellor [this message] 2022-04-11 18:12 ` [PATCH v2] drm/msm/gpu: Avoid -Wunused-function with !CONFIG_PM_SLEEP Nathan Chancellor
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