linux-kernel - Re: [PATCH] staging: rts5028: use msecs_to

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Date:	Thu, 22 Jan 2015 01:40:14 +0000
From:	敬锐 <micky_ching@...lsil.com.cn>
To:	Nicholas Mc Guire <der.herr@...r.at>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
	"Keerthimai Janarthanan" <keerthimaipb@...il.com>,
	Sarah Sharp <sarah.a.sharp@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Fabio Falzoi <fabio.falzoi84@...il.com>,
	"Tina Johnson" <tinajohnson.1234@...il.com>,
	Surya Seetharaman <surya.seetharaman9@...il.com>
Subject: Re: [PATCH] staging: rts5028: use msecs_to_jiffies for timeouts

the title should be 5208.

On 01/19/2015 03:25 PM, Nicholas Mc Guire wrote:
> This is only an API consolidation and should make things more readable
>
> Signed-off-by: Nicholas Mc Guire <der.herr@...r.at>
> ---
>
> Converting milliseconds to jiffies by val * HZ / 1000 is technically
> not wrong but msecs_to_jiffies(val) is the cleaner solution and handles
> corner cases correctly.
>
> This patch was only compile tested with x86_64_defconfig + CONFIG_STAGING=y,
> CONFIG_RTS5208=m
>
> Patch is against 3.19.0-rc4 -next-20150116
>
>   drivers/staging/rts5208/rtsx_transport.c |   12 ++++++------
>   1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/staging/rts5208/rtsx_transport.c b/drivers/staging/rts5208/rtsx_transport.c
> index 756a968..dab1995 100644
> --- a/drivers/staging/rts5208/rtsx_transport.c
> +++ b/drivers/staging/rts5208/rtsx_transport.c
> @@ -271,7 +271,7 @@ int rtsx_send_cmd(struct rtsx_chip *chip, u8 card, int timeout)
>   
>   	/* Wait for TRANS_OK_INT */
>   	timeleft = wait_for_completion_interruptible_timeout(
> -		&trans_done, timeout * HZ / 1000);
> +		&trans_done, msecs_to_jiffies(timeout));
>   	if (timeleft <= 0) {
>   		dev_dbg(rtsx_dev(chip), "chip->int_reg = 0x%x\n",
>   			chip->int_reg);
> @@ -431,7 +431,7 @@ static int rtsx_transfer_sglist_adma_partial(struct rtsx_chip *chip, u8 card,
>   	spin_unlock_irq(&rtsx->reg_lock);
>   
>   	timeleft = wait_for_completion_interruptible_timeout(
> -		&trans_done, timeout * HZ / 1000);
> +		&trans_done, msecs_to_jiffies(timeout));
>   	if (timeleft <= 0) {
>   		dev_dbg(rtsx_dev(chip), "Timeout (%s %d)\n",
>   			__func__, __LINE__);
> @@ -455,7 +455,7 @@ static int rtsx_transfer_sglist_adma_partial(struct rtsx_chip *chip, u8 card,
>   		init_completion(&trans_done);
>   		spin_unlock_irq(&rtsx->reg_lock);
>   		timeleft = wait_for_completion_interruptible_timeout(
> -			&trans_done, timeout * HZ / 1000);
> +			&trans_done, msecs_to_jiffies(timeout));
>   		if (timeleft <= 0) {
>   			dev_dbg(rtsx_dev(chip), "Timeout (%s %d)\n",
>   				__func__, __LINE__);
> @@ -575,7 +575,7 @@ static int rtsx_transfer_sglist_adma(struct rtsx_chip *chip, u8 card,
>   		spin_unlock_irq(&rtsx->reg_lock);
>   
>   		timeleft = wait_for_completion_interruptible_timeout(
> -			&trans_done, timeout * HZ / 1000);
> +			&trans_done, msecs_to_jiffies(timeout));
>   		if (timeleft <= 0) {
>   			dev_dbg(rtsx_dev(chip), "Timeout (%s %d)\n",
>   				__func__, __LINE__);
> @@ -602,7 +602,7 @@ static int rtsx_transfer_sglist_adma(struct rtsx_chip *chip, u8 card,
>   		init_completion(&trans_done);
>   		spin_unlock_irq(&rtsx->reg_lock);
>   		timeleft = wait_for_completion_interruptible_timeout(
> -			&trans_done, timeout * HZ / 1000);
> +			&trans_done, msecs_to_jiffies(timeout));
>   		if (timeleft <= 0) {
>   			dev_dbg(rtsx_dev(chip), "Timeout (%s %d)\n",
>   				__func__, __LINE__);
> @@ -688,7 +688,7 @@ static int rtsx_transfer_buf(struct rtsx_chip *chip, u8 card, void *buf,
>   
>   	/* Wait for TRANS_OK_INT */
>   	timeleft = wait_for_completion_interruptible_timeout(
> -		&trans_done, timeout * HZ / 1000);
> +		&trans_done, msecs_to_jiffies(timeout));
>   	if (timeleft <= 0) {
>   		dev_dbg(rtsx_dev(chip), "Timeout (%s %d)\n",
>   			__func__, __LINE__);