linux-kernel - Re: [PATCH v2 3/7] test_firmware: add partial read support for request_firmware_into

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Message-ID: <20200224080842.GA3308@kadam>
Date:   Mon, 24 Feb 2020 11:08:42 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Scott Branden <scott.branden@...adcom.com>
Cc:     Luis Chamberlain <mcgrof@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        David Brown <david.brown@...aro.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Shuah Khan <shuah@...nel.org>, bjorn.andersson@...aro.org,
        Shuah Khan <skhan@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-fsdevel@...r.kernel.org,
        BCM Kernel Feedback <bcm-kernel-feedback-list@...adcom.com>,
        Olof Johansson <olof@...om.net>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Colin Ian King <colin.king@...onical.com>,
        Kees Cook <keescook@...omium.org>,
        Takashi Iwai <tiwai@...e.de>, linux-kselftest@...r.kernel.org,
        Andy Gross <agross@...nel.org>
Subject: Re: [PATCH v2 3/7] test_firmware: add partial read support for
 request_firmware_into_buf

On Fri, Feb 21, 2020 at 05:13:08PM -0800, Scott Branden wrote:
> > > > +static ssize_t test_dev_config_show_size_t(char *buf, int cfg)
> > > > +{
> > > > +    size_t val;
> > > > +
> > > > +    mutex_lock(&test_fw_mutex);
> > > > +    val = cfg;
> > > > +    mutex_unlock(&test_fw_mutex);
> > > Both val and cfg are stack variables so there is no need for locking.
> > > Probably you meant to pass a pointer to cfg?
> I am following the existing code as was done for
> test_dev_config_show_bool(),
> test_dev_config_show_int(),
> test_dev_config_show_u8()

Heh.  Yes.  Those are buggy as well.  Good eyes.  Could you send a patch
to fix them?

regards,
dan caprnter