linux-kernel - [PATCH v3 2/4] nvmem: qfprom: Fix up qfprom_disable_fuse

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Message-Id: <1627627573-32454-3-git-send-email-rnayak@codeaurora.org>
Date:   Fri, 30 Jul 2021 12:16:11 +0530
From:   Rajendra Nayak <rnayak@...eaurora.org>
To:     agross@...nel.org, bjorn.andersson@...aro.org,
        srinivas.kandagatla@...aro.org, robh+dt@...nel.org
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, rbokka@...eaurora.org,
        dianders@...omium.org, Rajendra Nayak <rnayak@...eaurora.org>
Subject: [PATCH v3 2/4] nvmem: qfprom: Fix up qfprom_disable_fuse_blowing() ordering

qfprom_disable_fuse_blowing() disables a bunch of resources,
and then does a few register writes in the 'conf' address
space.
It works perhaps because the resources are needed only for the
'raw' register space writes, and that the 'conf' space allows
read/writes regardless.
However that makes the code look confusing, so just move the
register writes before turning off the resources in the
function.

Signed-off-by: Rajendra Nayak <rnayak@...eaurora.org>
---
 drivers/nvmem/qfprom.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/nvmem/qfprom.c b/drivers/nvmem/qfprom.c
index 81fbad5..b0ca4c6 100644
--- a/drivers/nvmem/qfprom.c
+++ b/drivers/nvmem/qfprom.c
@@ -139,6 +139,9 @@ static void qfprom_disable_fuse_blowing(const struct qfprom_priv *priv,
 {
 	int ret;
 
+	writel(old->timer_val, priv->qfpconf + QFPROM_BLOW_TIMER_OFFSET);
+	writel(old->accel_val, priv->qfpconf + QFPROM_ACCEL_OFFSET);
+
 	/*
 	 * This may be a shared rail and may be able to run at a lower rate
 	 * when we're not blowing fuses.  At the moment, the regulator framework
@@ -159,9 +162,6 @@ static void qfprom_disable_fuse_blowing(const struct qfprom_priv *priv,
 			 "Failed to set clock rate for disable (ignoring)\n");
 
 	clk_disable_unprepare(priv->secclk);
-
-	writel(old->timer_val, priv->qfpconf + QFPROM_BLOW_TIMER_OFFSET);
-	writel(old->accel_val, priv->qfpconf + QFPROM_ACCEL_OFFSET);
 }
 
 /**
-- 
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