linux-kernel - Re: [PATCH] mmc: dw_mmc: Fix some coding style

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Date:   Thu, 5 Jan 2017 10:24:30 +0800
From:   Shawn Lin <shawn.lin@...k-chips.com>
To:     Jaehoon Chung <jh80.chung@...sung.com>,
        Ziyuan Xu <xzy.xu@...k-chips.com>, ulf.hansson@...aro.org
Cc:     shawn.lin@...k-chips.com, linux-mmc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mmc: dw_mmc: Fix some coding style

On 2017/1/5 9:19, Jaehoon Chung wrote:
> Hi,
>
> On 01/04/2017 09:52 PM, Ziyuan Xu wrote:
>> Let's fix the warnings from checkpatch.pl:
>>
>> - line over 80 characters;
>> - block comments should align the * on each Lines;
>> - statements not starting on a tabstop.
>
> If there is no critical problem,
> I think that current codes are keeping better than changing.
> When someone contribute the patches relevant to these, it can be also changed,
> (It's more meaningful.)
>

Indeed.

Moreover, it breaks the git-blame history when we need to review
how the code had been developing..


> Best Regards,
> Jaehoon Chung
>
>>
>> Signed-off-by: Ziyuan Xu <xzy.xu@...k-chips.com>
>> ---
>>
>>  drivers/mmc/host/dw_mmc.c | 33 +++++++++++++++++----------------
>>  1 file changed, 17 insertions(+), 16 deletions(-)
>>
>> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
>> index ed63237..a8efe3f 100644
>> --- a/drivers/mmc/host/dw_mmc.c
>> +++ b/drivers/mmc/host/dw_mmc.c
>> @@ -94,7 +94,8 @@ struct idmac_desc {
>>
>>  	__le32		des1;	/* Buffer sizes */
>>  #define IDMAC_SET_BUFFER1_SIZE(d, s) \
>> -	((d)->des1 = ((d)->des1 & cpu_to_le32(0x03ffe000)) | (cpu_to_le32((s) & 0x1fff)))
>> +	((d)->des1 = ((d)->des1 & cpu_to_le32(0x03ffe000)) | \
>> +	 (cpu_to_le32((s) & 0x1fff)))
>>
>>  	__le32		des2;	/* buffer 1 physical address */
>>
>> @@ -2733,16 +2734,16 @@ static void dw_mci_init_dma(struct dw_mci *host)
>>  	struct device_node *np = dev->of_node;
>>
>>  	/*
>> -	* Check tansfer mode from HCON[17:16]
>> -	* Clear the ambiguous description of dw_mmc databook:
>> -	* 2b'00: No DMA Interface -> Actually means using Internal DMA block
>> -	* 2b'01: DesignWare DMA Interface -> Synopsys DW-DMA block
>> -	* 2b'10: Generic DMA Interface -> non-Synopsys generic DMA block
>> -	* 2b'11: Non DW DMA Interface -> pio only
>> -	* Compared to DesignWare DMA Interface, Generic DMA Interface has a
>> -	* simpler request/acknowledge handshake mechanism and both of them
>> -	* are regarded as external dma master for dw_mmc.
>> -	*/
>> +	 * Check tansfer mode from HCON[17:16]
>> +	 * Clear the ambiguous description of dw_mmc databook:
>> +	 * 2b'00: No DMA Interface -> Actually means using Internal DMA block
>> +	 * 2b'01: DesignWare DMA Interface -> Synopsys DW-DMA block
>> +	 * 2b'10: Generic DMA Interface -> non-Synopsys generic DMA block
>> +	 * 2b'11: Non DW DMA Interface -> pio only
>> +	 * Compared to DesignWare DMA Interface, Generic DMA Interface has a
>> +	 * simpler request/acknowledge handshake mechanism and both of them
>> +	 * are regarded as external dma master for dw_mmc.
>> +	 */
>>  	host->use_dma = SDMMC_GET_TRANS_MODE(mci_readl(host, HCON));
>>  	if (host->use_dma == DMA_INTERFACE_IDMA) {
>>  		host->use_dma = TRANS_MODE_IDMAC;
>> @@ -2756,9 +2757,9 @@ static void dw_mci_init_dma(struct dw_mci *host)
>>  	/* Determine which DMA interface to use */
>>  	if (host->use_dma == TRANS_MODE_IDMAC) {
>>  		/*
>> -		* Check ADDR_CONFIG bit in HCON to find
>> -		* IDMAC address bus width
>> -		*/
>> +		 * Check ADDR_CONFIG bit in HCON to find
>> +		 * IDMAC address bus width
>> +		 */
>>  		addr_config = SDMMC_GET_ADDR_CONFIG(mci_readl(host, HCON));
>>
>>  		if (addr_config == 1) {
>> @@ -3337,8 +3338,8 @@ int dw_mci_runtime_resume(struct device *dev)
>>  	 * Restore the initial value at FIFOTH register
>>  	 * And Invalidate the prev_blksz with zero
>>  	 */
>> -	 mci_writel(host, FIFOTH, host->fifoth_val);
>> -	 host->prev_blksz = 0;
>> +	mci_writel(host, FIFOTH, host->fifoth_val);
>> +	host->prev_blksz = 0;
>>
>>  	/* Put in max timeout */
>>  	mci_writel(host, TMOUT, 0xFFFFFFFF);
>>
>
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-- 
Best Regards
Shawn Lin