diff options
| author | KT Liao <kt.liao@emc.com.tw> | 2017-05-23 13:41:47 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2017-05-25 10:11:45 -0700 |
| commit | a04f144059ac09f2c3da50b5707df589044aad66 (patch) | |
| tree | 69263772d3c8ea4c7d2fb0608975f4f68265d2d1 /drivers | |
| parent | 4b3c7dbbfff0673e8a89575414b864d8b001d3bb (diff) | |
| download | linux-a04f144059ac09f2c3da50b5707df589044aad66.tar.bz2 | |
Input: elan_i2c - ignore signals when finishing updating firmware
Use wait_for_completion_timeout() instead of
wait_for_completion_interruptible_timeout() to avoid stray signals ruining
firmware update. Our timeout is only 300 msec so we are fine simply letting
it expire in case device misbehaves.
Signed-off-by: KT Liao <kt.liao@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/input/mouse/elan_i2c_i2c.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/drivers/input/mouse/elan_i2c_i2c.c b/drivers/input/mouse/elan_i2c_i2c.c index 765879dcaf85..f431da07f861 100644 --- a/drivers/input/mouse/elan_i2c_i2c.c +++ b/drivers/input/mouse/elan_i2c_i2c.c @@ -554,7 +554,6 @@ static int elan_i2c_finish_fw_update(struct i2c_client *client, struct completion *completion) { struct device *dev = &client->dev; - long ret; int error; int len; u8 buffer[ETP_I2C_REPORT_LEN]; @@ -570,23 +569,19 @@ static int elan_i2c_finish_fw_update(struct i2c_client *client, enable_irq(client->irq); error = elan_i2c_write_cmd(client, ETP_I2C_STAND_CMD, ETP_I2C_RESET); - if (!error) - ret = wait_for_completion_interruptible_timeout(completion, - msecs_to_jiffies(300)); - disable_irq(client->irq); - if (error) { dev_err(dev, "device reset failed: %d\n", error); - return error; - } else if (ret == 0) { + } else if (!wait_for_completion_timeout(completion, + msecs_to_jiffies(300))) { dev_err(dev, "timeout waiting for device reset\n"); - return -ETIMEDOUT; - } else if (ret < 0) { - error = ret; - dev_err(dev, "error waiting for device reset: %d\n", error); - return error; + error = -ETIMEDOUT; } + disable_irq(client->irq); + + if (error) + return error; + len = i2c_master_recv(client, buffer, ETP_I2C_INF_LENGTH); if (len != ETP_I2C_INF_LENGTH) { error = len < 0 ? len : -EIO; |