linux-kernel - Re: [PATCH V1] regmap: Support for caching in reg_raw

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Message-ID: <20120210114541.GB6472@opensource.wolfsonmicro.com>
Date:	Fri, 10 Feb 2012 11:45:42 +0000
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Laxman Dewangan <ldewangan@...dia.com>
Cc:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	linux-tegra@...r.kernel.org
Subject: Re: [PATCH V1] regmap: Support for caching in reg_raw_write()

On Fri, Feb 10, 2012 at 05:02:52PM +0530, Laxman Dewangan wrote:

This looks good, but could you make the few small improvements below
please?

> +	if (!map->cache_bypass && map->format.parse_val) {
> +		int val_bytes = map->format.val_bytes;
> +		unsigned int ival;
> +		for (i = 0; i < val_len / map->format.val_bytes; i++) {

A bit nit picky but since you've got a local val_bytes you may as well
use it.

> +			memcpy(map->work_buf, val + (i * val_bytes), val_bytes);
> +			ival = map->format.parse_val(map->work_buf);
> +			ret = regcache_write(map, reg + i, ival);
> +			if (ret) {
> +				dev_warn(map->dev,
> +					"Error in caching of register\n");

Say which register and the return value here - knowing the register
might be very helpful for debug.  This should probably also be at least
a dev_err().

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