diff options
| author | Hans Hu <hanshu-oc@zhaoxin.com> | 2023-11-02 03:53:51 +0100 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2024-01-18 21:10:43 +0100 |
| commit | 462e9804d2c90bfffb494718b5aae5c374ff3b78 (patch) | |
| tree | 9731aadaa42135fbd0a912c2956bd00c9790c82e /drivers/i2c/busses/i2c-wmt.c | |
| parent | i2c: mux: reg: Remove class-based device auto-detection support (diff) | |
| download | linux-462e9804d2c90bfffb494718b5aae5c374ff3b78.tar.xz linux-462e9804d2c90bfffb494718b5aae5c374ff3b78.zip | |
i2c: wmt: Reduce redundant: bus busy check
Put wmt_i2c_wait_bus_not_busy() in a more appropriate place
to reduce code redundancy
Signed-off-by: Hans Hu <hanshu-oc@zhaoxin.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/i2c/busses/i2c-wmt.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/drivers/i2c/busses/i2c-wmt.c b/drivers/i2c/busses/i2c-wmt.c index 76118abc6e10..d554c6377533 100644 --- a/drivers/i2c/busses/i2c-wmt.c +++ b/drivers/i2c/busses/i2c-wmt.c @@ -128,12 +128,6 @@ static int wmt_i2c_write(struct i2c_adapter *adap, struct i2c_msg *pmsg, unsigned long wait_result; int xfer_len = 0; - if (!(pmsg->flags & I2C_M_NOSTART)) { - ret = wmt_i2c_wait_bus_not_busy(i2c_dev); - if (ret < 0) - return ret; - } - if (pmsg->len == 0) { /* * We still need to run through the while (..) once, so @@ -219,12 +213,6 @@ static int wmt_i2c_read(struct i2c_adapter *adap, struct i2c_msg *pmsg, unsigned long wait_result; u32 xfer_len = 0; - if (!(pmsg->flags & I2C_M_NOSTART)) { - ret = wmt_i2c_wait_bus_not_busy(i2c_dev); - if (ret < 0) - return ret; - } - val = readw(i2c_dev->base + REG_CR); val &= ~CR_TX_END; writew(val, i2c_dev->base + REG_CR); @@ -297,11 +285,18 @@ static int wmt_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *pmsg; int i, is_last; int ret = 0; + struct wmt_i2c_dev *i2c_dev = i2c_get_adapdata(adap); for (i = 0; ret >= 0 && i < num; i++) { is_last = ((i + 1) == num); pmsg = &msgs[i]; + if (!(pmsg->flags & I2C_M_NOSTART)) { + ret = wmt_i2c_wait_bus_not_busy(i2c_dev); + if (ret < 0) + return ret; + } + if (pmsg->flags & I2C_M_RD) ret = wmt_i2c_read(adap, pmsg, is_last); else |