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[104.57.184.186]) by smtp.gmail.com with ESMTPSA id q5sm4219363otc.79.2021.11.01.09.37.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Nov 2021 09:37:34 -0700 (PDT) Date: Mon, 1 Nov 2021 09:39:17 -0700 From: Bjorn Andersson To: Sandeep Maheswaram Cc: Andy Gross , Greg Kroah-Hartman , Felipe Balbi , Stephen Boyd , Doug Anderson , Matthias Kaehlcke , Mathias Nyman , linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, quic_pkondeti@quicinc.com, quic_ppratap@quicinc.com Subject: Re: [PATCH v9 3/5] usb: dwc3: qcom: Add helper functions to enable,disable wake irqs Message-ID: References: <1635753224-23975-1-git-send-email-quic_c_sanm@quicinc.com> <1635753224-23975-4-git-send-email-quic_c_sanm@quicinc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1635753224-23975-4-git-send-email-quic_c_sanm@quicinc.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon 01 Nov 00:53 PDT 2021, Sandeep Maheswaram wrote: > Adding helper functions to enable,disable wake irqs to make > the code simple and readable. > > Signed-off-by: Sandeep Maheswaram > Reviewed-by: Matthias Kaehlcke > --- > drivers/usb/dwc3/dwc3-qcom.c | 58 ++++++++++++++++++++------------------------ > 1 file changed, 26 insertions(+), 32 deletions(-) > > diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c > index 9abbd01..54461f1 100644 > --- a/drivers/usb/dwc3/dwc3-qcom.c > +++ b/drivers/usb/dwc3/dwc3-qcom.c > @@ -296,50 +296,44 @@ static void dwc3_qcom_interconnect_exit(struct dwc3_qcom *qcom) > icc_put(qcom->icc_path_apps); > } > > +static void dwc3_qcom_enable_wakeup_irq(int irq) > +{ > + if (!irq) > + return; > + > + enable_irq(irq); > + enable_irq_wake(irq); > +} > + > +static void dwc3_qcom_disable_wakeup_irq(int irq) > +{ > + if (!irq) > + return; > + > + disable_irq_wake(irq); Now that you touch this code path. I presume keeping these interrupts enabled during runtime would cause the interrupt to fire during normal operation, but why do we need to toggle the irq_wake? Can't we just leave that flag set always? > + disable_irq_nosync(irq); > +} > + > static void dwc3_qcom_disable_interrupts(struct dwc3_qcom *qcom) > { > - if (qcom->hs_phy_irq) { > - disable_irq_wake(qcom->hs_phy_irq); > - disable_irq_nosync(qcom->hs_phy_irq); > - } > + dwc3_qcom_disable_wakeup_irq(qcom->hs_phy_irq); Why don't we just replace *_phy_irq with an array and turn these two function into two loops? That seems to be quite suitable for the multi-port dwc found in e.g. sc8180x as well... Regards, Bjorn > > - if (qcom->dp_hs_phy_irq) { > - disable_irq_wake(qcom->dp_hs_phy_irq); > - disable_irq_nosync(qcom->dp_hs_phy_irq); > - } > + dwc3_qcom_disable_wakeup_irq(qcom->dp_hs_phy_irq); > > - if (qcom->dm_hs_phy_irq) { > - disable_irq_wake(qcom->dm_hs_phy_irq); > - disable_irq_nosync(qcom->dm_hs_phy_irq); > - } > + dwc3_qcom_disable_wakeup_irq(qcom->dm_hs_phy_irq); > > - if (qcom->ss_phy_irq) { > - disable_irq_wake(qcom->ss_phy_irq); > - disable_irq_nosync(qcom->ss_phy_irq); > - } > + dwc3_qcom_disable_wakeup_irq(qcom->ss_phy_irq); > } > > static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom) > { > - if (qcom->hs_phy_irq) { > - enable_irq(qcom->hs_phy_irq); > - enable_irq_wake(qcom->hs_phy_irq); > - } > + dwc3_qcom_enable_wakeup_irq(qcom->hs_phy_irq); > > - if (qcom->dp_hs_phy_irq) { > - enable_irq(qcom->dp_hs_phy_irq); > - enable_irq_wake(qcom->dp_hs_phy_irq); > - } > + dwc3_qcom_enable_wakeup_irq(qcom->dp_hs_phy_irq); > > - if (qcom->dm_hs_phy_irq) { > - enable_irq(qcom->dm_hs_phy_irq); > - enable_irq_wake(qcom->dm_hs_phy_irq); > - } > + dwc3_qcom_enable_wakeup_irq(qcom->dm_hs_phy_irq); > > - if (qcom->ss_phy_irq) { > - enable_irq(qcom->ss_phy_irq); > - enable_irq_wake(qcom->ss_phy_irq); > - } > + dwc3_qcom_enable_wakeup_irq(qcom->ss_phy_irq); > } > > static int dwc3_qcom_suspend(struct dwc3_qcom *qcom) > -- > 2.7.4 >