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i2c-host-fixes for v6.16-rc5

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designware: initialise msg_write_idx during transfer
 microchip: check return value from core xfer call
 realtek: add 'reg' property constraint to the device tree
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Merge tag 'i2c-host-fixes-6.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux into i2c/for-current

i2c-host-fixes for v6.16-rc5

designware: initialise msg_write_idx during transfer
microchip: check return value from core xfer call
realtek: add 'reg' property constraint to the device tree
This commit is contained in:
Wolfram Sang 2025-07-04 18:31:22 +02:00
commit 534eb6de62
3 changed files with 8 additions and 2 deletions
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3
Documentation/devicetree/bindings/i2c/realtek,rtl9301-i2c.yaml
View File

@ -26,7 +26,8 @@ properties:
- const: realtek,rtl9301-i2c
reg:
description: Register offset and size this I2C controller.
items:
- description: Register offset and size this I2C controller.
"#address-cells":
const: 1

1
drivers/i2c/busses/i2c-designware-master.c
View File

@ -363,6 +363,7 @@ static int amd_i2c_dw_xfer_quirk(struct i2c_adapter *adap, struct i2c_msg *msgs,
dev->msgs = msgs;
dev->msgs_num = num_msgs;
dev->msg_write_idx = 0;
i2c_dw_xfer_init(dev);
/* Initiate messages read/write transaction */

6
drivers/i2c/busses/i2c-microchip-corei2c.c
View File

@ -435,6 +435,7 @@ static int mchp_corei2c_smbus_xfer(struct i2c_adapter *adap, u16 addr, unsigned
u8 tx_buf[I2C_SMBUS_BLOCK_MAX + 2];
u8 rx_buf[I2C_SMBUS_BLOCK_MAX + 1];
int num_msgs = 1;
int ret;
msgs[CORE_I2C_SMBUS_MSG_WR].addr = addr;
msgs[CORE_I2C_SMBUS_MSG_WR].flags = 0;
@ -505,7 +506,10 @@ static int mchp_corei2c_smbus_xfer(struct i2c_adapter *adap, u16 addr, unsigned
return -EOPNOTSUPP;
}
mchp_corei2c_xfer(&idev->adapter, msgs, num_msgs);
ret = mchp_corei2c_xfer(&idev->adapter, msgs, num_msgs);
if (ret < 0)
return ret;
if (read_write == I2C_SMBUS_WRITE || size <= I2C_SMBUS_BYTE_DATA)
return 0;