There is a confusing pattern in the kernel to use a variable named 'timeout' to store the result of wait_for_completion_timeout() causing patterns like:
timeout = wait_for_completion_timeout(...) if (!timeout) return -ETIMEDOUT;
with all kinds of permutations. Use 'time_left' as a variable to make the code self explaining.
Fix to the proper variable type 'unsigned long' while here.
Signed-off-by: Wolfram Sang wsa+renesas@sang-engineering.com --- drivers/slimbus/qcom-ngd-ctrl.c | 29 ++++++++++++++++------------- 1 file changed, 16 insertions(+), 13 deletions(-)
diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c index efeba8275a66..21b4008de4f3 100644 --- a/drivers/slimbus/qcom-ngd-ctrl.c +++ b/drivers/slimbus/qcom-ngd-ctrl.c @@ -789,7 +789,8 @@ static int qcom_slim_ngd_xfer_msg(struct slim_controller *sctrl, struct qcom_slim_ngd_ctrl *ctrl = dev_get_drvdata(sctrl->dev); DECLARE_COMPLETION_ONSTACK(tx_sent); DECLARE_COMPLETION_ONSTACK(done); - int ret, timeout, i; + int ret, i; + unsigned long time_left; u8 wbuf[SLIM_MSGQ_BUF_LEN]; u8 rbuf[SLIM_MSGQ_BUF_LEN]; u32 *pbuf; @@ -891,8 +892,8 @@ static int qcom_slim_ngd_xfer_msg(struct slim_controller *sctrl, return ret; }
- timeout = wait_for_completion_timeout(&tx_sent, HZ); - if (!timeout) { + time_left = wait_for_completion_timeout(&tx_sent, HZ); + if (!time_left) { dev_err(sctrl->dev, "TX timed out:MC:0x%x,mt:0x%x", txn->mc, txn->mt); mutex_unlock(&ctrl->tx_lock); @@ -900,8 +901,8 @@ static int qcom_slim_ngd_xfer_msg(struct slim_controller *sctrl, }
if (usr_msg) { - timeout = wait_for_completion_timeout(&done, HZ); - if (!timeout) { + time_left = wait_for_completion_timeout(&done, HZ); + if (!time_left) { dev_err(sctrl->dev, "TX timed out:MC:0x%x,mt:0x%x", txn->mc, txn->mt); mutex_unlock(&ctrl->tx_lock); @@ -917,7 +918,8 @@ static int qcom_slim_ngd_xfer_msg_sync(struct slim_controller *ctrl, struct slim_msg_txn *txn) { DECLARE_COMPLETION_ONSTACK(done); - int ret, timeout; + int ret; + unsigned long time_left;
ret = pm_runtime_get_sync(ctrl->dev); if (ret < 0) @@ -929,8 +931,8 @@ static int qcom_slim_ngd_xfer_msg_sync(struct slim_controller *ctrl, if (ret) goto pm_put;
- timeout = wait_for_completion_timeout(&done, HZ); - if (!timeout) { + time_left = wait_for_completion_timeout(&done, HZ); + if (!time_left) { dev_err(ctrl->dev, "TX timed out:MC:0x%x,mt:0x%x", txn->mc, txn->mt); ret = -ETIMEDOUT; @@ -1169,11 +1171,12 @@ static int qcom_slim_ngd_power_up(struct qcom_slim_ngd_ctrl *ctrl) enum qcom_slim_ngd_state cur_state = ctrl->state; struct qcom_slim_ngd *ngd = ctrl->ngd; u32 laddr, rx_msgq; - int timeout, ret = 0; + int ret = 0; + unsigned long time_left;
if (ctrl->state == QCOM_SLIM_NGD_CTRL_DOWN) { - timeout = wait_for_completion_timeout(&ctrl->qmi.qmi_comp, HZ); - if (!timeout) + time_left = wait_for_completion_timeout(&ctrl->qmi.qmi_comp, HZ); + if (!time_left) return -EREMOTEIO; }
@@ -1218,8 +1221,8 @@ static int qcom_slim_ngd_power_up(struct qcom_slim_ngd_ctrl *ctrl) ngd->base + NGD_RX_MSGQ_CFG); qcom_slim_ngd_setup(ctrl);
- timeout = wait_for_completion_timeout(&ctrl->reconf, HZ); - if (!timeout) { + time_left = wait_for_completion_timeout(&ctrl->reconf, HZ); + if (!time_left) { dev_err(ctrl->dev, "capability exchange timed-out\n"); return -ETIMEDOUT; }