diff mbox series

[RFC,15/35] i2c/busses: Tidy Success/Failure checks

Message ID 20200713122247.10985-16-refactormyself@gmail.com (mailing list archive)
State Changes Requested, archived
Headers show
Series [RFC,01/35] xen-pciback: Change PCIBIOS_SUCCESSFUL to 0 | expand

Commit Message

Saheed O. Bolarinwa July 13, 2020, 12:22 p.m. UTC 
Remove unnecessary check for 0.

Signed-off-by: "Saheed O. Bolarinwa" <refactormyself@gmail.com>
---
This patch depends on PATCH 15/35

 drivers/i2c/busses/i2c-ali15x3.c |  5 ++---
 drivers/i2c/busses/i2c-nforce2.c |  3 +--
 drivers/i2c/busses/i2c-sis5595.c | 15 +++++----------
 3 files changed, 8 insertions(+), 15 deletions(-)

Comments

Jean Delvare July 17, 2020, 3:11 p.m. UTC | #1 
On Mon, 13 Jul 2020 14:22:27 +0200, Saheed O. Bolarinwa wrote:
> Signed-off-by: "Saheed O. Bolarinwa" <refactormyself@gmail.com>
> ---
> This patch depends on PATCH 15/35

Not possible, as this *is* patch 15/35. Not really worth mentioning
anyway, as it is expected that patches in a given series may depend on
any earlier patch in the same series.

> 
>  drivers/i2c/busses/i2c-ali15x3.c |  5 ++---
>  drivers/i2c/busses/i2c-nforce2.c |  3 +--
>  drivers/i2c/busses/i2c-sis5595.c | 15 +++++----------
>  3 files changed, 8 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-ali15x3.c b/drivers/i2c/busses/i2c-ali15x3.c
> index 359ee3e0864a..c9e779cc184e 100644
> --- a/drivers/i2c/busses/i2c-ali15x3.c
> +++ b/drivers/i2c/busses/i2c-ali15x3.c
> @@ -167,11 +167,10 @@ static int ali15x3_setup(struct pci_dev *ALI15X3_dev)
>  	if(force_addr) {
>  		dev_info(&ALI15X3_dev->dev, "forcing ISA address 0x%04X\n",
>  			ali15x3_smba);
> -		if (0 != pci_write_config_word(ALI15X3_dev,
> -								SMBBA,
> +		if (pci_write_config_word(ALI15X3_dev, SMBBA,
>  								ali15x3_smba))
>  			goto error;

You can't possibly leave the code with such a ugly alignment and run
away. The whole point of tidying patches it to have more readable code
in the end, right?

> -		if (0 != pci_read_config_word(ALI15X3_dev,
> +		if (pci_read_config_word(ALI15X3_dev,
>  								SMBBA, &a))
>  			goto error;
>  		if ((a & ~(ALI15X3_SMB_IOSIZE - 1)) != ali15x3_smba) {
> diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c
> index 385f4f446f36..54d2985b7aaf 100644
> --- a/drivers/i2c/busses/i2c-nforce2.c
> +++ b/drivers/i2c/busses/i2c-nforce2.c
> @@ -327,8 +327,7 @@ static int nforce2_probe_smb(struct pci_dev *dev, int bar, int alt_reg,
>  		/* Older incarnations of the device used non-standard BARs */
>  		u16 iobase;
>  
> -		if (pci_read_config_word(dev, alt_reg, &iobase)
> -		    != 0) {
> +		if (pci_read_config_word(dev, alt_reg, &iobase)) {
>  			dev_err(&dev->dev, "Error reading PCI config for %s\n",
>  				name);
>  			return -EIO;
> diff --git a/drivers/i2c/busses/i2c-sis5595.c b/drivers/i2c/busses/i2c-sis5595.c
> index fbe3ee31eae3..b016f48519d3 100644
> --- a/drivers/i2c/busses/i2c-sis5595.c
> +++ b/drivers/i2c/busses/i2c-sis5595.c
> @@ -175,11 +175,9 @@ 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)
> -		    != 0)
> +		if (pci_write_config_word(SIS5595_dev, ACPI_BASE, sis5595_base))
>  			goto error;
> -		if (pci_read_config_word(SIS5595_dev, ACPI_BASE, &a)
> -		    != 0)
> +		if (pci_read_config_word(SIS5595_dev, ACPI_BASE, &a))
>  			goto error;
>  		if ((a & ~(SIS5595_EXTENT - 1)) != sis5595_base) {
>  			/* doesn't work for some chips! */
> @@ -188,16 +186,13 @@ static int sis5595_setup(struct pci_dev *SIS5595_dev)
>  		}
>  	}
>  
> -	if (pci_read_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, &val)
> -	    != 0)
> +	if (pci_read_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, &val))
>  		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)
> -		    != 0)
> +		if (pci_write_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, val | 0x80))
>  			goto error;
> -		if (pci_read_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, &val)
> -		    != 0)
> +		if (pci_read_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, &val))
>  			goto error;
>  		if ((val & 0x80) == 0) {
>  			/* doesn't work for some chips? */

Overall I'd be happy to have a more consistent style for checking
errors on PCI config registers access, so this seems to be going into
the right direction.
diff mbox series

Patch

diff --git a/drivers/i2c/busses/i2c-ali15x3.c b/drivers/i2c/busses/i2c-ali15x3.c
index 359ee3e0864a..c9e779cc184e 100644
--- a/drivers/i2c/busses/i2c-ali15x3.c
+++ b/drivers/i2c/busses/i2c-ali15x3.c
@@ -167,11 +167,10 @@  static int ali15x3_setup(struct pci_dev *ALI15X3_dev)
 	if(force_addr) {
 		dev_info(&ALI15X3_dev->dev, "forcing ISA address 0x%04X\n",
 			ali15x3_smba);
-		if (0 != pci_write_config_word(ALI15X3_dev,
-								SMBBA,
+		if (pci_write_config_word(ALI15X3_dev, SMBBA,
 								ali15x3_smba))
 			goto error;
-		if (0 != pci_read_config_word(ALI15X3_dev,
+		if (pci_read_config_word(ALI15X3_dev,
 								SMBBA, &a))
 			goto error;
 		if ((a & ~(ALI15X3_SMB_IOSIZE - 1)) != ali15x3_smba) {
diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c
index 385f4f446f36..54d2985b7aaf 100644
--- a/drivers/i2c/busses/i2c-nforce2.c
+++ b/drivers/i2c/busses/i2c-nforce2.c
@@ -327,8 +327,7 @@  static int nforce2_probe_smb(struct pci_dev *dev, int bar, int alt_reg,
 		/* Older incarnations of the device used non-standard BARs */
 		u16 iobase;
 
-		if (pci_read_config_word(dev, alt_reg, &iobase)
-		    != 0) {
+		if (pci_read_config_word(dev, alt_reg, &iobase)) {
 			dev_err(&dev->dev, "Error reading PCI config for %s\n",
 				name);
 			return -EIO;
diff --git a/drivers/i2c/busses/i2c-sis5595.c b/drivers/i2c/busses/i2c-sis5595.c
index fbe3ee31eae3..b016f48519d3 100644
--- a/drivers/i2c/busses/i2c-sis5595.c
+++ b/drivers/i2c/busses/i2c-sis5595.c
@@ -175,11 +175,9 @@  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)
-		    != 0)
+		if (pci_write_config_word(SIS5595_dev, ACPI_BASE, sis5595_base))
 			goto error;
-		if (pci_read_config_word(SIS5595_dev, ACPI_BASE, &a)
-		    != 0)
+		if (pci_read_config_word(SIS5595_dev, ACPI_BASE, &a))
 			goto error;
 		if ((a & ~(SIS5595_EXTENT - 1)) != sis5595_base) {
 			/* doesn't work for some chips! */
@@ -188,16 +186,13 @@  static int sis5595_setup(struct pci_dev *SIS5595_dev)
 		}
 	}
 
-	if (pci_read_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, &val)
-	    != 0)
+	if (pci_read_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, &val))
 		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)
-		    != 0)
+		if (pci_write_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, val | 0x80))
 			goto error;
-		if (pci_read_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, &val)
-		    != 0)
+		if (pci_read_config_byte(SIS5595_dev, SIS5595_ENABLE_REG, &val))
 			goto error;
 		if ((val & 0x80) == 0) {
 			/* doesn't work for some chips? */