linux-kernel - Re: [PATCH v2 12/14] platform/x86/intel/ifs: Add current

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Message-ID: <1826887b-dfad-30a2-16dd-412e5556cc84@intel.com>
Date:   Wed, 9 Nov 2022 15:46:07 -0800
From:   Sohil Mehta <sohil.mehta@...el.com>
To:     Jithu Joseph <jithu.joseph@...el.com>, <hdegoede@...hat.com>,
        <markgross@...nel.org>
CC:     <tglx@...utronix.de>, <mingo@...hat.com>, <bp@...en8.de>,
        <dave.hansen@...ux.intel.com>, <x86@...nel.org>, <hpa@...or.com>,
        <gregkh@...uxfoundation.org>, <ashok.raj@...el.com>,
        <tony.luck@...el.com>, <linux-kernel@...r.kernel.org>,
        <platform-driver-x86@...r.kernel.org>, <patches@...ts.linux.dev>,
        <ravi.v.shankar@...el.com>, <thiago.macieira@...el.com>,
        <athenas.jimenez.gonzalez@...el.com>
Subject: Re: [PATCH v2 12/14] platform/x86/intel/ifs: Add current_batch sysfs
 entry

On 11/7/2022 2:53 PM, Jithu Joseph wrote:
> Reviewed-by: Tony Luck <tony.luck@...el.com>
> Signed-off-by: Jithu Joseph <jithu.joseph@...el.com>
> ---
>   drivers/platform/x86/intel/ifs/ifs.h     | 23 ++++++++++----
>   drivers/platform/x86/intel/ifs/core.c    |  1 +
>   drivers/platform/x86/intel/ifs/load.c    | 18 +++++++----
>   drivers/platform/x86/intel/ifs/runtest.c | 10 ++++---
>   drivers/platform/x86/intel/ifs/sysfs.c   | 38 ++++++++++++++++++++++++
>   5 files changed, 74 insertions(+), 16 deletions(-)
> 

Reviewed-by: Sohil Mehta <sohil.mehta@...el.com>

A Nit below.

> +static ssize_t current_batch_store(struct device *dev,
> +				   struct device_attribute *attr,
> +				   const char *buf, size_t count)
> +{
> +	struct ifs_data *ifsd = ifs_get_data(dev);
> +	int cur_batch;
> +	int rc;
> +
> +	rc = kstrtouint(buf, 0, &cur_batch);

Should this be kstrtoint() since cur_batch is defined as int? Or maybe 
it might be better to define cur_batch as unsigned int to avoid the 
negative input?

> +	if (rc < 0 || cur_batch > 0xff)
> +		return -EINVAL;
> +
> +	if (down_interruptible(&ifs_sem))
> +		return -EINTR;
> +
> +	ifsd->cur_batch = cur_batch;
> +


Sohil