linux-kernel - Re: [PATCH 3/3] drivers/mmc/host: Add realtek sdmmc interface driver

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Date:	Fri, 20 Jul 2012 09:48:35 +0800
From:	wwang <wei_wang@...lsil.com.cn>
To:	Oliver Neukum <oliver@...kum.org>
CC:	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] drivers/mmc/host: Add realtek sdmmc interface driver

Hi Oliver:

I will fix it. Should I resend all three patches, or just this one?

BR,
Wei WANG

于 2012年07月19日 20:26, Oliver Neukum 写道:
> On Thursday 19 July 2012 17:55:18 wei_wang@...lsil.com.cn wrote:
>
>> +static void sd_normal_rw(struct realtek_sdmmc *host, struct mmc_request *mrq)
>> +{
>> +	struct mmc_command *cmd = mrq->cmd;
>> +	struct mmc_data *data = mrq->data;
>> +	u8 _cmd[5], *buf;
>> +
>> +	_cmd[0] = 0x40 | (u8)cmd->opcode;
>> +	_cmd[1] = (u8)(cmd->arg >> 24);
>> +	_cmd[2] = (u8)(cmd->arg >> 16);
>> +	_cmd[3] = (u8)(cmd->arg >> 8);
>> +	_cmd[4] = (u8)cmd->arg;
> Please use the predefined macro for endianness conversion.
>
>> +	buf = kzalloc(data->blksz, GFP_KERNEL);
> 1. You must handle a failure to allocate a buffer
> 2. You must use GFP_NOIO as you are in a block driver
>
> 	Regards
> 		Oliver
>

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