linux-kernel - Re: [PATCH V0 4/7] usb: common: eud: Added the driver support for Embedded USB Debugger(EUD)

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Date:   Tue, 05 Oct 2021 00:14:25 -0700
From:   Joe Perches <joe@...ches.com>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Souradeep Chowdhury <schowdhu@...eaurora.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org,
        Bryan O'Donoghue <pure.logic@...us-software.ie>,
        Greg KH <greg@...ah.com>, linux-kernel@...r.kernel.org,
        ckadabi@...eaurora.org, tsoni@...eaurora.org,
        bryanh@...eaurora.org, psodagud@...eaurora.org,
        satyap@...eaurora.org, pheragu@...eaurora.org,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Sibi Sankar <sibis@...eaurora.org>,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
Subject: Re: [PATCH V0 4/7] usb: common: eud: Added the driver support for
 Embedded USB Debugger(EUD)

On Mon, 2021-10-04 at 09:42 -0700, Bjorn Andersson wrote:
> On Mon 04 Oct 04:16 PDT 2021, Souradeep Chowdhury wrote:
> 
> > Add support for control peripheral of EUD (Embedded USB Debugger) to
> > listen to events such as USB attach/detach, pet EUD to indicate software
> > is functional.Reusing the platform device kobj, sysfs entry 'enable' is
> > created to enable or disable EUD.
[]
> > diff --git a/drivers/usb/common/qcom_eud.c b/drivers/usb/common/qcom_eud.c
[]
> > +static ssize_t enable_show(struct device *dev,
> > +		struct device_attribute *attr, char *buf)
> > +{
> > +	struct eud_chip *chip = dev_get_drvdata(dev);
> > +
> > +	return sprintf(buf, "%d", chip->enable);

trivia:

should probably use sysfs_emit and have a trailing '\n' in the format.