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i2c: i801: Improve i801_setup_hstcfg

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i801_setup_hstcfg() leaves the bits in priv->original_hstcfg that
we're interested in intact. Therefore we can remove the return value
from the function and use priv->original_hstcfg directly.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Tested-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Heiner Kallweit 2021-05-25 22:07:17 +02:00 committed by Wolfram Sang
parent d4a994f69f
commit c601610cd7
1 changed files with 4 additions and 6 deletions
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10
drivers/i2c/busses/i2c-i801.c
View file

@ -1684,19 +1684,17 @@ static inline int i801_acpi_probe(struct i801_priv *priv) { return 0; }
static inline void i801_acpi_remove(struct i801_priv *priv) { }
#endif
static unsigned char i801_setup_hstcfg(struct i801_priv *priv)
static void i801_setup_hstcfg(struct i801_priv *priv)
{
unsigned char hstcfg = priv->original_hstcfg;
hstcfg &= ~SMBHSTCFG_I2C_EN; /* SMBus timing */
hstcfg |= SMBHSTCFG_HST_EN;
pci_write_config_byte(priv->pci_dev, SMBHSTCFG, hstcfg);
return hstcfg;
}
static int i801_probe(struct pci_dev *dev, const struct pci_device_id *id)
{
unsigned char temp;
int err, i;
struct i801_priv *priv;
@ -1818,16 +1816,16 @@ static int i801_probe(struct pci_dev *dev, const struct pci_device_id *id)
}
pci_read_config_byte(priv->pci_dev, SMBHSTCFG, &priv->original_hstcfg);
temp = i801_setup_hstcfg(priv);
i801_setup_hstcfg(priv);
if (!(priv->original_hstcfg & SMBHSTCFG_HST_EN))
dev_info(&dev->dev, "Enabling SMBus device\n");
if (temp & SMBHSTCFG_SMB_SMI_EN) {
if (priv->original_hstcfg & SMBHSTCFG_SMB_SMI_EN) {
dev_dbg(&dev->dev, "SMBus using interrupt SMI#\n");
/* Disable SMBus interrupt feature if SMBus using SMI# */
priv->features &= ~FEATURE_IRQ;
}
if (temp & SMBHSTCFG_SPD_WD)
if (priv->original_hstcfg & SMBHSTCFG_SPD_WD)
dev_info(&dev->dev, "SPD Write Disable is set\n");
/* Clear special mode bits */