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

2020-07-17 Thread Jean Delvare
On Mon, 13 Jul 2020 14:22:27 +0200, Saheed O. Bolarinwa wrote:
> Signed-off-by: "Saheed O. Bolarinwa" 
> ---
> 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.

-- 
Jean Delvare
SUSE L3 Support


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

2020-07-13 Thread Saheed O. Bolarinwa
Remove unnecessary check for 0.

Signed-off-by: "Saheed O. Bolarinwa" 
---
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(-)

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? */
-- 
2.18.2