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([82.78.167.165]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-38bf322aab8sm2348496f8f.57.2025.01.17.03.45.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Jan 2025 03:45:53 -0800 (PST) From: Claudiu X-Google-Original-From: Claudiu To: prabhakar.mahadev-lad.rj@bp.renesas.com, jic23@kernel.org, lars@metafoo.de, ulf.hansson@linaro.org Cc: claudiu.beznea@tuxon.dev, linux-iio@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Claudiu Beznea Subject: [PATCH v2 2/2] iio: adc: rzg2l: Cleanup suspend/resume path Date: Fri, 17 Jan 2025 13:45:40 +0200 Message-ID: <20250117114540.289248-3-claudiu.beznea.uj@bp.renesas.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250117114540.289248-1-claudiu.beznea.uj@bp.renesas.com> References: <20250117114540.289248-1-claudiu.beznea.uj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Claudiu Beznea There is no need to manually track the runtime PM status in the driver. The pm_runtime_force_suspend() and pm_runtime_force_resume() functions already call pm_runtime_status_suspended() to check the runtime PM state. Additionally, avoid calling pm_runtime_put_autosuspend() during the suspend/resume path, as this would decrease the usage counter of a potential user that had the ADC open before the suspend/resume cycle. Fixes: cb164d7c1526 ("iio: adc: rzg2l_adc: Add suspend/resume support") Signed-off-by: Claudiu Beznea Reviewed-by: Ulf Hansson --- Changes in v2: - none drivers/iio/adc/rzg2l_adc.c | 29 ++++++++--------------------- 1 file changed, 8 insertions(+), 21 deletions(-) diff --git a/drivers/iio/adc/rzg2l_adc.c b/drivers/iio/adc/rzg2l_adc.c index 4742a727a80c..99cb73347b18 100644 --- a/drivers/iio/adc/rzg2l_adc.c +++ b/drivers/iio/adc/rzg2l_adc.c @@ -89,7 +89,6 @@ struct rzg2l_adc { struct mutex lock; int irq; u16 last_val[RZG2L_ADC_MAX_CHANNELS]; - bool was_rpm_active; }; =20 /** @@ -580,14 +579,9 @@ static int rzg2l_adc_suspend(struct device *dev) }; int ret; =20 - if (pm_runtime_suspended(dev)) { - adc->was_rpm_active =3D false; - } else { - ret =3D pm_runtime_force_suspend(dev); - if (ret) - return ret; - adc->was_rpm_active =3D true; - } + ret =3D pm_runtime_force_suspend(dev); + if (ret) + return ret; =20 ret =3D reset_control_bulk_assert(ARRAY_SIZE(resets), resets); if (ret) @@ -596,9 +590,7 @@ static int rzg2l_adc_suspend(struct device *dev) return 0; =20 rpm_restore: - if (adc->was_rpm_active) - pm_runtime_force_resume(dev); - + pm_runtime_force_resume(dev); return ret; } =20 @@ -616,11 +608,9 @@ static int rzg2l_adc_resume(struct device *dev) if (ret) return ret; =20 - if (adc->was_rpm_active) { - ret =3D pm_runtime_force_resume(dev); - if (ret) - goto resets_restore; - } + ret =3D pm_runtime_force_resume(dev); + if (ret) + goto resets_restore; =20 ret =3D rzg2l_adc_hw_init(dev, adc); if (ret) @@ -629,10 +619,7 @@ static int rzg2l_adc_resume(struct device *dev) return 0; =20 rpm_restore: - if (adc->was_rpm_active) { - pm_runtime_mark_last_busy(dev); - pm_runtime_put_autosuspend(dev); - } + pm_runtime_force_suspend(dev); resets_restore: reset_control_bulk_assert(ARRAY_SIZE(resets), resets); return ret; --=20 2.43.0