linux-kernel - Re: [PATCH] soc: qcom: rpmh: Update rpmh

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Date:   Thu, 18 Jun 2020 08:10:21 -0600
From:   Lina Iyer <ilina@...eaurora.org>
To:     Maulik Shah <mkshah@...eaurora.org>
Cc:     bjorn.andersson@...aro.org, agross@...nel.org,
        georgi.djakov@...aro.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        dianders@...omium.org, swboyd@...omium.org, rnayak@...eaurora.org,
        lsrao@...eaurora.org
Subject: Re: [PATCH] soc: qcom: rpmh: Update rpmh_invalidate function to
 return void

On Thu, Jun 18 2020 at 07:06 -0600, Maulik Shah wrote:
>Currently rpmh_invalidate() always returns success. Update its
>return type to void.
>
>Suggested-by: Stephen Boyd <swboyd@...omium.org>
>Signed-off-by: Maulik Shah <mkshah@...eaurora.org>
Reviewed-by: Lina Iyer <ilina@...eaurora.org>

>---
> drivers/interconnect/qcom/bcm-voter.c | 6 +-----
> drivers/soc/qcom/rpmh.c               | 4 +---
> include/soc/qcom/rpmh.h               | 7 ++++---
> 3 files changed, 6 insertions(+), 11 deletions(-)
>
>diff --git a/drivers/interconnect/qcom/bcm-voter.c b/drivers/interconnect/qcom/bcm-voter.c
>index 2a11a63..a3d2ef1 100644
>--- a/drivers/interconnect/qcom/bcm-voter.c
>+++ b/drivers/interconnect/qcom/bcm-voter.c
>@@ -266,11 +266,7 @@ int qcom_icc_bcm_voter_commit(struct bcm_voter *voter)
> 	if (!commit_idx[0])
> 		goto out;
>
>-	ret = rpmh_invalidate(voter->dev);
>-	if (ret) {
>-		pr_err("Error invalidating RPMH client (%d)\n", ret);
>-		goto out;
>-	}
>+	rpmh_invalidate(voter->dev);
>
> 	ret = rpmh_write_batch(voter->dev, RPMH_ACTIVE_ONLY_STATE,
> 			       cmds, commit_idx);
>diff --git a/drivers/soc/qcom/rpmh.c b/drivers/soc/qcom/rpmh.c
>index f2b5b46c..b61e183 100644
>--- a/drivers/soc/qcom/rpmh.c
>+++ b/drivers/soc/qcom/rpmh.c
>@@ -497,7 +497,7 @@ int rpmh_flush(struct rpmh_ctrlr *ctrlr)
>  *
>  * Invalidate the sleep and wake values in batch_cache.
>  */
>-int rpmh_invalidate(const struct device *dev)
>+void rpmh_invalidate(const struct device *dev)
> {
> 	struct rpmh_ctrlr *ctrlr = get_rpmh_ctrlr(dev);
> 	struct batch_cache_req *req, *tmp;
>@@ -509,7 +509,5 @@ int rpmh_invalidate(const struct device *dev)
> 	INIT_LIST_HEAD(&ctrlr->batch_cache);
> 	ctrlr->dirty = true;
> 	spin_unlock_irqrestore(&ctrlr->cache_lock, flags);
>-
>-	return 0;
> }
> EXPORT_SYMBOL(rpmh_invalidate);
>diff --git a/include/soc/qcom/rpmh.h b/include/soc/qcom/rpmh.h
>index f9ec353..bdbee1a 100644
>--- a/include/soc/qcom/rpmh.h
>+++ b/include/soc/qcom/rpmh.h
>@@ -20,7 +20,7 @@ int rpmh_write_async(const struct device *dev, enum rpmh_state state,
> int rpmh_write_batch(const struct device *dev, enum rpmh_state state,
> 		     const struct tcs_cmd *cmd, u32 *n);
>
>-int rpmh_invalidate(const struct device *dev);
>+void rpmh_invalidate(const struct device *dev);
>
> #else
>
>@@ -38,8 +38,9 @@ static inline int rpmh_write_batch(const struct device *dev,
> 				   const struct tcs_cmd *cmd, u32 *n)
> { return -ENODEV; }
>
>-static inline int rpmh_invalidate(const struct device *dev)
>-{ return -ENODEV; }
>+static inline void rpmh_invalidate(const struct device *dev)
>+{
>+}
>
> #endif /* CONFIG_QCOM_RPMH */
>
>-- 
>QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
>of Code Aurora Forum, hosted by The Linux Foundation
>