6.8-stable review patch. If anyone has any objections, please let me know.
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From: Jarkko Nikula jarkko.nikula@linux.intel.com
[ Upstream commit c94612a72ac87b0337a0d85b9263266776ed4190 ]
I believe RX FIFO depth define 0 is incorrect on Wangxun 10Gb NIC. It must be at least 1 since code is able to read received data from the DW_IC_DATA_CMD register.
For now this define is irrelevant since the txgbe_i2c_dw_xfer_quirk() doesn't use the rx_fifo_depth member variable of struct dw_i2c_dev but is needed when converting code into generic polling mode implementation.
Signed-off-by: Jarkko Nikula jarkko.nikula@linux.intel.com Tested-by: Jiawen Wu jiawenwu@trustnetic.com Signed-off-by: Andi Shyti andi.shyti@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/i2c/busses/i2c-designware-core.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-designware-core.h b/drivers/i2c/busses/i2c-designware-core.h index a7f6f3eafad7d..ae835000fd32a 100644 --- a/drivers/i2c/busses/i2c-designware-core.h +++ b/drivers/i2c/busses/i2c-designware-core.h @@ -318,7 +318,7 @@ struct dw_i2c_dev { #define AMD_UCSI_INTR_EN 0xd
#define TXGBE_TX_FIFO_DEPTH 4 -#define TXGBE_RX_FIFO_DEPTH 0 +#define TXGBE_RX_FIFO_DEPTH 1
struct i2c_dw_semaphore_callbacks { int (*probe)(struct dw_i2c_dev *dev);