linux-kernel - Re: [PATCH 09/14] I2C: sis5595: Do PCI error checks on own line

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Date:   Fri, 1 Sep 2023 13:16:44 +0200
From:   Jean Delvare <jdelvare@...e.de>
To:     Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc:     linux-pci@...r.kernel.org, Bjorn Helgaas <helgaas@...nel.org>,
        Andi Shyti <andi.shyti@...nel.org>, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 09/14] I2C: sis5595: Do PCI error checks on own line

On Thu, 24 Aug 2023 16:28:27 +0300, Ilpo Järvinen wrote:
> Instead of if conditions with line splits, use the usual error handling
> pattern with a separate variable to improve readability.
> 
> No functional changes intended.
> 
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
> ---
>  drivers/i2c/busses/i2c-sis5595.c | 20 ++++++++++----------
>  1 file changed, 10 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-sis5595.c b/drivers/i2c/busses/i2c-sis5595.c
> index c793a5c14cda..486f1e9dfb74 100644
> --- a/drivers/i2c/busses/i2c-sis5595.c
> +++ b/drivers/i2c/busses/i2c-sis5595.c
> @@ -175,11 +175,11 @@ static int sis5595_setup(struct pci_dev *SIS5595_dev)
>  
>  	if (force_addr) {
>  		dev_info(&SIS5595_dev->dev, "forcing ISA address 0x%04X\n", sis5595_base);
> -		if (pci_write_config_word(SIS5595_dev, ACPI_BASE, sis5595_base)
> -		    != PCIBIOS_SUCCESSFUL)
> +		retval = pci_write_config_word(SIS5595_dev, ACPI_BASE, sis5595_base);
> +		if (retval != PCIBIOS_SUCCESSFUL)
>  			goto error;
> -		if (pci_read_config_word(SIS5595_dev, ACPI_BASE, &a)
> -		    != PCIBIOS_SUCCESSFUL)
> +		retval = pci_read_config_word(SIS5595_dev, ACPI_BASE, &a);
> +		if (retval != PCIBIOS_SUCCESSFUL)
>  			goto error;
>  		if ((a & ~(SIS5595_EXTENT - 1)) != sis5595_base) {
>  			/* doesn't work for some chips! */
> @@ -188,16 +188,16 @@ static int sis5595_setup(struct pci_dev *SIS5595_dev)
>  		}
>  	}
>  
> -	if (pci_read_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, &val)
> -	    != PCIBIOS_SUCCESSFUL)
> +	retval = pci_read_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, &val);
> +	if (retval != PCIBIOS_SUCCESSFUL)
>  		goto error;
>  	if ((val & 0x80) == 0) {
>  		dev_info(&SIS5595_dev->dev, "enabling ACPI\n");
> -		if (pci_write_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, val | 0x80)
> -		    != PCIBIOS_SUCCESSFUL)
> +		retval = pci_write_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, val | 0x80);
> +		if (retval != PCIBIOS_SUCCESSFUL)
>  			goto error;
> -		if (pci_read_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, &val)
> -		    != PCIBIOS_SUCCESSFUL)
> +		retval = pci_read_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, &val);
> +		if (retval != PCIBIOS_SUCCESSFUL)
>  			goto error;
>  		if ((val & 0x80) == 0) {
>  			/* doesn't work for some chips? */

Reviewed-by: Jean Delvare <jdelvare@...e.de>

Thanks,
-- 
Jean Delvare
SUSE L3 Support