linux-kernel - [PATCH 2/2] clk: qcom: reset: Use the correct type of sleep/delay based on length

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Date:   Wed, 26 Jul 2023 15:26:20 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Bjorn Andersson <andersson@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Mike Turquette <mturquette@...aro.org>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, Stephen Boyd <sboyd@...eaurora.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH 2/2] clk: qcom: reset: Use the correct type of sleep/delay
 based on length

Based on the length of the delay (see: [1]), use the correct sleep/delay
functions.

[1] https://www.kernel.org/doc/Documentation/timers/timers-howto.txt
Fixes: b36ba30c8ac6 ("clk: qcom: Add reset controller support")
Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 drivers/clk/qcom/reset.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/qcom/reset.c b/drivers/clk/qcom/reset.c
index 0e914ec7aeae..928995c3f369 100644
--- a/drivers/clk/qcom/reset.c
+++ b/drivers/clk/qcom/reset.c
@@ -14,9 +14,15 @@
 static int qcom_reset(struct reset_controller_dev *rcdev, unsigned long id)
 {
 	struct qcom_reset_controller *rst = to_qcom_reset_controller(rcdev);
+	u16 delay_us = rst->reset_map[id].udelay ?: 1;
 
 	rcdev->ops->assert(rcdev, id);
-	udelay(rst->reset_map[id].udelay ?: 1); /* use 1 us as default */
+
+	if (delay_us < 10)
+		udelay(delay_us);
+	else
+		usleep_range(delay_us, delay_us + 5);
+
 	rcdev->ops->deassert(rcdev, id);
 	return 0;
 }

-- 
2.41.0