linux-kernel - [PATCH V2 4/4] drivers: qcom: rpmh-rsc: remove redundant register access

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Message-Id: <20190722215340.3071-4-ilina@codeaurora.org>
Date:   Mon, 22 Jul 2019 15:53:40 -0600
From:   Lina Iyer <ilina@...eaurora.org>
To:     agross@...nel.org, bjorn.andersson@...aro.org, swboyd@...omium.org
Cc:     linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
        rnayak@...eaurora.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org, dianders@...omium.org,
        mkshah@...eaurora.org, Lina Iyer <ilina@...eaurora.org>
Subject: [PATCH V2 4/4] drivers: qcom: rpmh-rsc: remove redundant register access

Since drv->tcs_in_use is updated when the DRV_STATUS is updated, we
could simply use the former to determine if the TCS is idle or not.
Therefore, remove redundant TCS register read.

Signed-off-by: Lina Iyer <ilina@...eaurora.org>
---
 drivers/soc/qcom/rpmh-rsc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c
index add5e84751c9..b04cd2d2910c 100644
--- a/drivers/soc/qcom/rpmh-rsc.c
+++ b/drivers/soc/qcom/rpmh-rsc.c
@@ -93,8 +93,7 @@ static void write_tcs_reg_sync(struct rsc_drv *drv, int reg, int tcs_id,
 
 static bool tcs_is_free(struct rsc_drv *drv, int tcs_id)
 {
-	return !test_bit(tcs_id, drv->tcs_in_use) &&
-	       read_tcs_reg(drv, RSC_DRV_STATUS, tcs_id, 0);
+	return !test_bit(tcs_id, drv->tcs_in_use);
 }
 
 static struct tcs_group *get_tcs_of_type(struct rsc_drv *drv, int type)
-- 
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