linux-kernel - Re: [PATCH 1/1] ipw2200, fix ipw io functions

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Date:	Fri, 13 Feb 2009 09:23:25 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	Zhu Yi <yi.zhu@...el.com>
CC:	"linville@...driver.com" <linville@...driver.com>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	James Ketrenos <jketreno@...ux.intel.com>,
	"Chatre, Reinette" <reinette.chatre@...el.com>
Subject: Re: [PATCH 1/1] ipw2200, fix ipw io functions

On 02/13/2009 01:49 AM, Zhu Yi wrote:
> On Fri, 2009-02-13 at 05:29 +0800, Jiri Slaby wrote:
>>  /* alias to 8-bit direct read (low 4K of SRAM/regs), with debug
>> wrapper */
>> -#define ipw_read8(ipw, ofs) __ipw_read8(__FILE__, __LINE__, ipw, ofs)
>> +#define ipw_read8(ipw, ofs) ({ \
>> +       IPW_DEBUG_IO("%s %d: read_direct8(0x%08X)\n", __FILE__, __LINE__, \
>> +                       (u32)(ofs)); \
>> +       _ipw_read8(ipw, ofs); \
>> +})
> 
> Please put a do {} while(0) for this and some of below macros as well.

This is impossible, reads need to return a value...
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