linux-kernel - Re: [PATCH 10/44] staging: spmi: hisi-spmi-controller: do some code cleanups

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Date:   Wed, 12 Aug 2020 09:17:47 -0700
From:   Joe Perches <joe@...ches.com>
To:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc:     linuxarm@...wei.com, mauro.chehab@...wei.com,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>
Subject: Re: [PATCH 10/44] staging: spmi: hisi-spmi-controller: do some code
 cleanups

On Wed, 2020-08-12 at 17:56 +0200, Mauro Carvalho Chehab wrote:
> There are several minor things that can be cleanup in
> order to make this driver more prepared for leaving staging.

trivial style notes:

> diff --git a/drivers/staging/hikey9xx/hisi-spmi-controller.c b/drivers/staging/hikey9xx/hisi-spmi-controller.c
[]
> @@ -106,14 +83,13 @@ static int spmi_controller_wait_for_done(struct device *dev,
>  					 struct spmi_controller_dev *ctrl_dev,
>  					 void __iomem *base, u8 sid, u16 addr)
>  {
> -	u32 status = 0;
>  	u32 timeout = SPMI_CONTROLLER_TIMEOUT_US;
> -	u32 offset;
> +	u32 status, offset;
>  
>  	offset  = SPMI_APB_SPMI_STATUS_BASE_ADDR;
>  	offset += SPMI_CHANNEL_OFFSET * ctrl_dev->channel + SPMI_SLAVE_OFFSET * sid;
>  
> -	while (timeout--) {
> +	do {
>  		status = readl(base + offset);
>  
>  		if (status & SPMI_APB_TRANS_DONE) {
> @@ -126,21 +102,21 @@ static int spmi_controller_wait_for_done(struct device *dev,
>  			return 0;
>  		}
>  		udelay(1);
> -	}
> +	}  while(timeout--);

Odd spacing.
Two spaces after close brace, none before open parenthesis.

> @@ -237,14 +217,13 @@ static int spmi_write_cmd(struct spmi_controller *ctrl,
[]
> -	i = 0;
> -	do {
> +	for (i = 0; bc > i * SPMI_PER_DATAREG_BYTE; i++) {
>  		data = 0;
>  		if ((bc - i * SPMI_PER_DATAREG_BYTE) >> 2) {
>  			memcpy(&data, buf, sizeof(data));
> @@ -256,22 +235,22 @@ static int spmi_write_cmd(struct spmi_controller *ctrl,
>  
>  		writel((u32)cpu_to_be32(data),
>  		       spmi_controller->base + chnl_ofst + SPMI_APB_SPMI_WDATA0_BASE_ADDR + SPMI_PER_DATAREG_BYTE * i);
> -		i++;
> -	} while (bc > i * SPMI_PER_DATAREG_BYTE);
> +	};

Unnecessary semicolon after for loop close brace.