linux-kernel - Re: [PATCH v2 3/5] drivers/acpi: Introduce Platform Firmware Runtime Update device driver

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Date:   Wed, 15 Sep 2021 17:03:57 +0800
From:   Chen Yu <yu.c.chen@...el.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <len.brown@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Andy Shevchenko <andriy.shevchenko@...el.com>,
        Aubrey Li <aubrey.li@...el.com>,
        Ashok Raj <ashok.raj@...el.com>,
        Mike Rapoport <rppt@...nel.org>,
        Ard Biesheuvel <ardb@...nel.org>,
        Jonathan Corbet <corbet@....net>,
        Hans de Goede <hdegoede@...hat.com>,
        Maximilian Luz <luzmaximilian@...il.com>,
        Alexander Graf <graf@...zon.com>,
        Jarkko Sakkinen <jarkko@...nel.org>,
        Hannes Reinecke <hare@...e.de>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Jiri Slaby <jirislaby@...nel.org>,
        Andra Paraschiv <andraprs@...zon.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Ben Widawsky <ben.widawsky@...el.com>,
        linux-doc@...r.kernel.org
Subject: Re: [PATCH v2 3/5] drivers/acpi: Introduce Platform Firmware Runtime
 Update device driver

Hi Greg,
thank you very much for your comments,
On Tue, Sep 14, 2021 at 10:11:31AM +0200, Greg Kroah-Hartman wrote:
> On Tue, Sep 14, 2021 at 03:58:41PM +0800, Chen Yu wrote:
> > +enum start_action {
> > +	START_STAGE,
> > +	START_ACTIVATE,
> > +	START_STAGE_ACTIVATE,
> > +};
> > +
> > +enum dsm_status {
> > +	DSM_SUCCEED,
> > +	DSM_FUNC_NOT_SUPPORT,
> > +	DSM_INVAL_INPUT,
> > +	DSM_HARDWARE_ERR,
> > +	DSM_RETRY_SUGGESTED,
> > +	DSM_UNKNOWN,
> > +	DSM_FUNC_SPEC_ERR,
> > +};
> > +
> > +struct update_cap_info {
> > +	enum dsm_status status;
> > +	int update_cap;
> > +
> > +	uuid_t code_type;
> > +	int fw_version;
> > +	int code_rt_version;
> > +
> > +	uuid_t drv_type;
> > +	int drv_rt_version;
> > +	int drv_svn;
> > +
> > +	uuid_t platform_id;
> > +	uuid_t oem_id;
> > +
> > +	char oem_info[];
> 
> Please use valid types for structures that cross the user/kernel
> boundry.
> 
Okay, I'll switch them into __u prefixed one.
> > +};
> > +
> > +struct com_buf_info {
> > +	enum dsm_status status;
> > +	enum dsm_status ext_status;
> > +	unsigned long addr_lo;
> > +	unsigned long addr_hi;
> > +	int buf_size;
> > +};
> 
> Same here.
> 
Okay, I'll fix them.
> > +
> > +struct updated_result {
> > +	enum dsm_status status;
> > +	enum dsm_status ext_status;
> > +	unsigned long low_auth_time;
> > +	unsigned long high_auth_time;
> > +	unsigned long low_exec_time;
> > +	unsigned long high_exec_time;
> 
> And same here.
> 
> And these are very odd structure names that you are adding to the
> "global" namespace.  Please make them have a prefix for your driver so
> that people know what they belong to.  "updated_result" is way too
> generic.
> 
Okay, added the driver name prefix in next version.

thanks,
Chenyu