linux-kernel - Re: [PATCH v3 2/2] misc: Add iop driver for Sunplus SP7021

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <YbHWKx6AU4z/TJS1@kroah.com>
Date:   Thu, 9 Dec 2021 11:10:51 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Tony Huang <tonyhuang.sunplus@...il.com>
Cc:     robh+dt@...nel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, derek.kiernan@...inx.com,
        dragan.cvetic@...inx.com, arnd@...db.de, wells.lu@...plus.com,
        tony.huang@...plus.com
Subject: Re: [PATCH v3 2/2] misc: Add iop driver for Sunplus SP7021

On Thu, Dec 09, 2021 at 04:58:09PM +0800, Tony Huang wrote:
> +	while (1) {
> +		if (p_iop_reg->iop_data7 == 0xaaaa)
> +			break;
> +	}

You can not create a loop that could never exit.  Please fix.

Also, what prevents the compiler from optimizing this away into nothing?
This code does not look correct at all.

> +
> +	writel(0xdd, &p_iop_reg->iop_data1);//8051 bin file call Ultra low function.
> +	mdelay(10);
> +}
> +
> +static int  sp_iop_get_normal_code(struct device *dev, struct sp_iop *iop)
> +{
> +	const struct firmware *fw;
> +	static const char file[] = "normal.bin";
> +	unsigned int err, i;
> +
> +	dev_info(dev, "normal code\n");

Please always delete your debugging code before submitting a patch.

Also, please run checkpatch.pl on your changes before submitting them.

thanks,

greg k-h