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authorJarkko Nikula <jarkko.nikula@linux.intel.com>2021-10-26 17:39:16 +0300
committerWolfram Sang <wsa@kernel.org>2021-10-29 21:30:26 +0200
commit1ad5dc3540d8c621d1e15a6bff9c0ac30fba2857 (patch)
treec1bd732075ac58a639e19a990665a3af69c59c4c /drivers/i2c
parentcc28e578f515f068cd8ee280706b8d8e31c472f9 (diff)
downloadlinux-1ad5dc3540d8c621d1e15a6bff9c0ac30fba2857.tar.bz2
i2c: i801: Fix incorrect and needless software PEC disabling
Commit a6b8bb6a813a ("i2c: i801: Fix handling SMBHSTCNT_PEC_EN") attempts to disable software PEC by clearing the SMBHSTCNT_PEC_EN (bit 7) in the SMBus Host Control register (I/O SMBHSTCNT) but incorrectly clears it in the PCI Host Configuration register (PCI SMBHSTCFG). This clearing is actually needless since after above commit the SMBHSTCNT_PEC_EN is never set and the register is initialized with known values. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Acked-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/i2c-i801.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 115660dce722..b6048a571543 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -1657,7 +1657,6 @@ static void i801_setup_hstcfg(struct i801_priv *priv)
unsigned char hstcfg = priv->original_hstcfg;
hstcfg &= ~SMBHSTCFG_I2C_EN; /* SMBus timing */
- hstcfg &= ~SMBHSTCNT_PEC_EN; /* Disable software PEC */
hstcfg |= SMBHSTCFG_HST_EN;
pci_write_config_byte(priv->pci_dev, SMBHSTCFG, hstcfg);
}