linux-kernel - [PATCH v2 3/3] soc: qcom: rpmh-rsc: Fold WARN

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Date:   Sat, 25 Apr 2020 10:53:12 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        Maulik Shah <mkshah@...eaurora.org>,
        Douglas Anderson <dianders@...omium.org>
Subject: [PATCH v2 3/3] soc: qcom: rpmh-rsc: Fold WARN_ON() into if condition

Move the WARN_ON() into the if condition so the compiler can see that
the branch is unlikely() and possibly optimize it better.

Cc: Maulik Shah <mkshah@...eaurora.org>
Reviewed-by: Douglas Anderson <dianders@...omium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Signed-off-by: Stephen Boyd <swboyd@...omium.org>
---
 drivers/soc/qcom/rpmh-rsc.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c
index 28121a32a434..4accfeb191de 100644
--- a/drivers/soc/qcom/rpmh-rsc.c
+++ b/drivers/soc/qcom/rpmh-rsc.c
@@ -373,10 +373,8 @@ static irqreturn_t tcs_tx_done(int irq, void *p)
 
 	for_each_set_bit(i, &irq_status, BITS_PER_TYPE(u32)) {
 		req = get_req_from_tcs(drv, i);
-		if (!req) {
-			WARN_ON(1);
+		if (WARN_ON(!req))
 			goto skip;
-		}
 
 		err = 0;
 		for (j = 0; j < req->num_cmds; j++) {
-- 
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