[Outreachy kernel] [PATCH] drm/tinydrm: Replace list_for_each with list_for_each_entry

[Noralf Trønnes]

Den 16.10.2017 21.19, skrev Sean Paul:
> On Sun, Oct 15, 2017 at 01:58:23AM +0530, Harsha Sharma wrote:
>> Replace use of list_for_each with list_for_each_entry to simplify the
>> code and remove variables that are used only in list_for_each.
>> Done with following coccinelle patch:
>>
>> @r@
>> identifier fn,i,f,p;
>> expression e;
>> iterator name list_for_each, list_for_each_entry;
>> type T;
>> @@
>>
>> fn(...) {
>> ++ T *i;
>>    <+...
>> - list_for_each(p,e)
>> + list_for_each_entry(i,e,f)
>>    {
>>                ...
>> -   T *i = list_entry(p,T,f);
>>                    ...
>>     }
>>     ...+>
>> }
>>
>> @@
>> identifier r.fn,r.p;
>> @@
>>
>> fn(...) {
>>    ...
>> - struct list_head *p;
>>    ... when != p
>> }
>>
>> @@
>> identifier r.fn,r.i,r.f;
>> expression r.e;
>> statement S;
>> @@
>>
>> fn(...) {
>>    <...
>>    list_for_each_entry(i,e,f)
>> - {
>>    S
>> - }
>>    ...>
>> }
>>
>> @s@
>> identifier i,f,p;
>> expression e;
>> type T;
>> @@
>>
>> - list_for_each(p,e)
>> + list_for_each_entry(i,e,f)
>>    {
>>      ... when != T *i;
>> -   i = list_entry(p,T,f);
>>      ...
>>    }
>>
>> @@
>> identifier s.p;
>> @@
>>
>> - struct list_head *p;
>>    ... when != p
>>
>> @@
>> identifier s.i,s.f;
>> expression s.e;
>> statement S;
>> @@
>>
>>    list_for_each_entry(i,e,f)
>> - {
>>    S
>> - }
>>
>> Signed-off-by: Harsha Sharma <harshasharmaiitr at gmail.com>
> Reviewed-by: Sean Paul <seanpaul at chromium.org>

Thanks, applied to drm-misc.

Noralf.

>> ---
>>   drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c | 4 +---
>>   1 file changed, 1 insertion(+), 3 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c
>> index bd6cce093a85..bf96072d1b97 100644
>> --- a/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c
>> +++ b/drivers/gpu/drm/tinydrm/core/tinydrm-helpers.c
>> @@ -414,11 +414,9 @@ tinydrm_dbg_spi_print(struct spi_device *spi, struct spi_transfer *tr,
>>   void _tinydrm_dbg_spi_message(struct spi_device *spi, struct spi_message *m)
>>   {
>>   	struct spi_transfer *tmp;
>> -	struct list_head *pos;
>>   	int i = 0;
>>   
>> -	list_for_each(pos, &m->transfers) {
>> -		tmp = list_entry(pos, struct spi_transfer, transfer_list);
>> +	list_for_each_entry(tmp, &m->transfers, transfer_list) {
>>   
>>   		if (tmp->tx_buf)
>>   			tinydrm_dbg_spi_print(spi, tmp, tmp->tx_buf, i, true);
>> -- 
>> 2.11.0
>>
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