Re: [PATCH v3 4/8] mmc: dw_mmc: remove unused member variable.

[Jaehoon Chung <jh80.chung@samsung.com>]

On 02/06/2014 08:23 PM, Seungwon Jeon wrote:
> On Monday, February 03, 2014, Jaehoon Chung wrote:
>> Since using the device-tree, didn't use the callback pointer.
>> So removed the unused callback pointer.
>>
>>
> Above unnecessary line?

Remove it.
> 
> Looks good to me.
> But just one thing is...
> We may need to consider alternative for setpower soon.
If we need to consider it, the related code should be located into SoC driver's file

Best Regards,
Jaehoon Chung
> 
> Thanks,
> Seungwon Jeon
> 
>> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
>> ---
>> Changelog V3:
>> 	- None
>> Changelog V2:
>> 	- None
>>
>>  drivers/mmc/host/dw_mmc.c  |   33 +++------------------------------
>>  include/linux/mmc/dw_mmc.h |   14 --------------
>>  2 files changed, 3 insertions(+), 44 deletions(-)
>>
>> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
>> index e7357b8..551dade 100644
>> --- a/drivers/mmc/host/dw_mmc.c
>> +++ b/drivers/mmc/host/dw_mmc.c
>> @@ -850,8 +850,6 @@ static void __dw_mci_start_request(struct dw_mci *host,
>>  	u32 cmdflags;
>>
>>  	mrq = slot->mrq;
>> -	if (host->pdata->select_slot)
>> -		host->pdata->select_slot(slot->id);
>>
>>  	host->cur_slot = slot;
>>  	host->mrq = mrq;
>> @@ -985,17 +983,11 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
>>  	switch (ios->power_mode) {
>>  	case MMC_POWER_UP:
>>  		set_bit(DW_MMC_CARD_NEED_INIT, &slot->flags);
>> -		/* Power up slot */
>> -		if (slot->host->pdata->setpower)
>> -			slot->host->pdata->setpower(slot->id, mmc->ocr_avail);
>>  		regs = mci_readl(slot->host, PWREN);
>>  		regs |= (1 << slot->id);
>>  		mci_writel(slot->host, PWREN, regs);
>>  		break;
>>  	case MMC_POWER_OFF:
>> -		/* Power down slot */
>> -		if (slot->host->pdata->setpower)
>> -			slot->host->pdata->setpower(slot->id, 0);
>>  		regs = mci_readl(slot->host, PWREN);
>>  		regs &= ~(1 << slot->id);
>>  		mci_writel(slot->host, PWREN, regs);
>> @@ -1009,13 +1001,10 @@ static int dw_mci_get_ro(struct mmc_host *mmc)
>>  {
>>  	int read_only;
>>  	struct dw_mci_slot *slot = mmc_priv(mmc);
>> -	struct dw_mci_board *brd = slot->host->pdata;
>>
>>  	/* Use platform get_ro function, else try on board write protect */
>>  	if (slot->quirks & DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT)
>>  		read_only = 0;
>> -	else if (brd->get_ro)
>> -		read_only = brd->get_ro(slot->id);
>>  	else if (gpio_is_valid(slot->wp_gpio))
>>  		read_only = gpio_get_value(slot->wp_gpio);
>>  	else
>> @@ -1039,8 +1028,6 @@ static int dw_mci_get_cd(struct mmc_host *mmc)
>>  	/* Use platform get_cd function, else try onboard card detect */
>>  	if (brd->quirks & DW_MCI_QUIRK_BROKEN_CARD_DETECTION)
>>  		present = 1;
>> -	else if (brd->get_cd)
>> -		present = !brd->get_cd(slot->id);
>>  	else if (!IS_ERR_VALUE(gpio_cd))
>>  		present = gpio_cd;
>>  	else
>> @@ -2138,17 +2125,7 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
>>  		mmc->f_max = freq[1];
>>  	}
>>
>> -	if (host->pdata->get_ocr)
>> -		mmc->ocr_avail = host->pdata->get_ocr(id);
>> -	else
>> -		mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
>> -
>> -	/*
>> -	 * Start with slot power disabled, it will be enabled when a card
>> -	 * is detected.
>> -	 */
>> -	if (host->pdata->setpower)
>> -		host->pdata->setpower(id, 0);
>> +	mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
>>
>>  	if (host->pdata->caps)
>>  		mmc->caps = host->pdata->caps;
>> @@ -2217,10 +2194,6 @@ err_setup_bus:
>>
>>  static void dw_mci_cleanup_slot(struct dw_mci_slot *slot, unsigned int id)
>>  {
>> -	/* Shutdown detect IRQ */
>> -	if (slot->host->pdata->exit)
>> -		slot->host->pdata->exit(id);
>> -
>>  	/* Debugfs stuff is cleaned up by mmc core */
>>  	mmc_remove_host(slot->mmc);
>>  	slot->host->slot[id] = NULL;
>> @@ -2395,9 +2368,9 @@ int dw_mci_probe(struct dw_mci *host)
>>  		}
>>  	}
>>
>> -	if (!host->pdata->select_slot && host->pdata->num_slots > 1) {
>> +	if (host->pdata->num_slots > 1) {
>>  		dev_err(host->dev,
>> -			"Platform data must supply select_slot function\n");
>> +			"Platform data must supply num_slots.\n");
>>  		return -ENODEV;
>>  	}
>>
>> diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h
>> index 6ce7d2c..babaea9 100644
>> --- a/include/linux/mmc/dw_mmc.h
>> +++ b/include/linux/mmc/dw_mmc.h
>> @@ -248,20 +248,6 @@ struct dw_mci_board {
>>  	/* delay in mS before detecting cards after interrupt */
>>  	u32 detect_delay_ms;
>>
>> -	int (*init)(u32 slot_id, irq_handler_t , void *);
>> -	int (*get_ro)(u32 slot_id);
>> -	int (*get_cd)(u32 slot_id);
>> -	int (*get_ocr)(u32 slot_id);
>> -	int (*get_bus_wd)(u32 slot_id);
>> -	/*
>> -	 * Enable power to selected slot and set voltage to desired level.
>> -	 * Voltage levels are specified using MMC_VDD_xxx defines defined
>> -	 * in linux/mmc/host.h file.
>> -	 */
>> -	void (*setpower)(u32 slot_id, u32 volt);
>> -	void (*exit)(u32 slot_id);
>> -	void (*select_slot)(u32 slot_id);
>> -
>>  	struct dw_mci_dma_ops *dma_ops;
>>  	struct dma_pdata *data;
>>  	struct block_settings *blk_settings;
>> --
>> 1.7.9.5
>> --
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> 
>