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i2c-for-6.17-rc5

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- i801: drop superfluous WDT entry for Birch
 - rtl9300:
   - fix channel number check in probe
   - check data length boundaries in xfer
   - drop broken SMBus quick operation
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Merge tag 'i2c-for-6.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c fixes from Wolfram Sang:

 - i801: drop superfluous WDT entry for Birch

 - rtl9300:
    - fix channel number check in probe
    - check data length boundaries in xfer
    - drop broken SMBus quick operation

* tag 'i2c-for-6.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: rtl9300: remove broken SMBus Quick operation support
  i2c: rtl9300: ensure data length is within supported range
  i2c: rtl9300: fix channel number bound check
  i2c: i801: Hide Intel Birch Stream SoC TCO WDT
This commit is contained in:
Linus Torvalds 2025-09-07 12:30:31 -07:00
commit bd8f3bff4a
2 changed files with 9 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/i2c/busses/i2c-i801.c
View File

@ -1052,7 +1052,7 @@ static const struct pci_device_id i801_ids[] = {
{ PCI_DEVICE_DATA(INTEL, METEOR_LAKE_P_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) },
{ PCI_DEVICE_DATA(INTEL, METEOR_LAKE_SOC_S_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) },
{ PCI_DEVICE_DATA(INTEL, METEOR_LAKE_PCH_S_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) },
{ PCI_DEVICE_DATA(INTEL, BIRCH_STREAM_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) },
{ PCI_DEVICE_DATA(INTEL, BIRCH_STREAM_SMBUS, FEATURES_ICH5) },
{ PCI_DEVICE_DATA(INTEL, ARROW_LAKE_H_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) },
{ PCI_DEVICE_DATA(INTEL, PANTHER_LAKE_H_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) },
{ PCI_DEVICE_DATA(INTEL, PANTHER_LAKE_P_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) },

22
drivers/i2c/busses/i2c-rtl9300.c
View File

@ -99,6 +99,9 @@ static int rtl9300_i2c_config_xfer(struct rtl9300_i2c *i2c, struct rtl9300_i2c_c
{
u32 val, mask;
if (len < 1 || len > 16)
return -EINVAL;
val = chan->bus_freq << RTL9300_I2C_MST_CTRL2_SCL_FREQ_OFS;
mask = RTL9300_I2C_MST_CTRL2_SCL_FREQ_MASK;
@ -222,15 +225,6 @@ static int rtl9300_i2c_smbus_xfer(struct i2c_adapter *adap, u16 addr, unsigned s
}
switch (size) {
case I2C_SMBUS_QUICK:
ret = rtl9300_i2c_config_xfer(i2c, chan, addr, 0);
if (ret)
goto out_unlock;
ret = rtl9300_i2c_reg_addr_set(i2c, 0, 0);
if (ret)
goto out_unlock;
break;
case I2C_SMBUS_BYTE:
if (read_write == I2C_SMBUS_WRITE) {
ret = rtl9300_i2c_config_xfer(i2c, chan, addr, 0);
@ -312,9 +306,9 @@ out_unlock:
static u32 rtl9300_i2c_func(struct i2c_adapter *a)
{
return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
I2C_FUNC_SMBUS_BLOCK_DATA;
return I2C_FUNC_SMBUS_BYTE | I2C_FUNC_SMBUS_BYTE_DATA |
I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_BLOCK_DATA |
I2C_FUNC_SMBUS_I2C_BLOCK;
}
static const struct i2c_algorithm rtl9300_i2c_algo = {
@ -323,7 +317,7 @@ static const struct i2c_algorithm rtl9300_i2c_algo = {
};
static struct i2c_adapter_quirks rtl9300_i2c_quirks = {
.flags = I2C_AQ_NO_CLK_STRETCH,
.flags = I2C_AQ_NO_CLK_STRETCH | I2C_AQ_NO_ZERO_LEN,
.max_read_len = 16,
.max_write_len = 16,
};
@ -353,7 +347,7 @@ static int rtl9300_i2c_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, i2c);
if (device_get_child_node_count(dev) >= RTL9300_I2C_MUX_NCHAN)
if (device_get_child_node_count(dev) > RTL9300_I2C_MUX_NCHAN)
return dev_err_probe(dev, -EINVAL, "Too many channels\n");
device_for_each_child_node(dev, child) {