linux-kernel - Re: [PATCH 1/5] drivers/base: Add a DEVICE_BOOL

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Date:	Wed, 17 Oct 2012 12:03:00 -0700
From:	Greg Kroah-Hartman <greg@...ah.com>
To:	Borislav Petkov <bp@...64.org>
Cc:	Tony Luck <tony.luck@...el.com>,
	"Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Borislav Petkov <borislav.petkov@....com>
Subject: Re: [PATCH 1/5] drivers/base: Add a DEVICE_BOOL_ATTR macro

On Wed, Oct 17, 2012 at 01:13:51PM +0200, Borislav Petkov wrote:
> +ssize_t device_store_bool(struct device *dev, struct device_attribute *attr,
> +			  const char *buf, size_t size)
> +{
> +	struct dev_ext_attribute *ea = to_ext_attr(attr);
> +	u8 bval;
> +
> +	if (kstrtou8(buf, 10, &bval) < 0)
> +		return -EINVAL;
> +
> +	*(bool *)ea->var = !!bval;
> +
> +	return size;
> +}
> +EXPORT_SYMBOL_GPL(device_store_bool);

Wouldn't it be nice to be able to accept 'y' 'Y' 'n' 'N' '0' and '1'
like the module bool parameter code does?  That would make things a bit
more consistent, and possibly allow you to use this function for the
module sysfs file handling as well.

greg k-h
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