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Diffstat (limited to 'drivers/i2c/busses/i2c-eg20t.c')
-rw-r--r--drivers/i2c/busses/i2c-eg20t.c26
1 files changed, 4 insertions, 22 deletions
diff --git a/drivers/i2c/busses/i2c-eg20t.c b/drivers/i2c/busses/i2c-eg20t.c
index 0f3752967c4..ff15ae90aaf 100644
--- a/drivers/i2c/busses/i2c-eg20t.c
+++ b/drivers/i2c/busses/i2c-eg20t.c
@@ -312,24 +312,6 @@ static void pch_i2c_start(struct i2c_algo_pch_data *adap)
}
/**
- * pch_i2c_getack() - to confirm ACK/NACK
- * @adap: Pointer to struct i2c_algo_pch_data.
- */
-static s32 pch_i2c_getack(struct i2c_algo_pch_data *adap)
-{
- u32 reg_val;
- void __iomem *p = adap->pch_base_address;
- reg_val = ioread32(p + PCH_I2CSR) & PCH_GETACK;
-
- if (reg_val != 0) {
- pch_err(adap, "return%d\n", -EPROTO);
- return -EPROTO;
- }
-
- return 0;
-}
-
-/**
* pch_i2c_stop() - generate stop condition in normal mode.
* @adap: Pointer to struct i2c_algo_pch_data.
*/
@@ -344,6 +326,7 @@ static void pch_i2c_stop(struct i2c_algo_pch_data *adap)
static int pch_i2c_wait_for_check_xfer(struct i2c_algo_pch_data *adap)
{
long ret;
+ void __iomem *p = adap->pch_base_address;
ret = wait_event_timeout(pch_event,
(adap->pch_event_flag != 0), msecs_to_jiffies(1000));
@@ -366,10 +349,9 @@ static int pch_i2c_wait_for_check_xfer(struct i2c_algo_pch_data *adap)
adap->pch_event_flag = 0;
- if (pch_i2c_getack(adap)) {
- pch_dbg(adap, "Receive NACK for slave address"
- "setting\n");
- return -EIO;
+ if (ioread32(p + PCH_I2CSR) & PCH_GETACK) {
+ pch_dbg(adap, "Receive NACK for slave address setting\n");
+ return -ENXIO;
}
return 0;