linux-kernel - [PATCH AUTOSEL 5.4 01/27] ASoC: dwc: limit the number of overrun messages

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Message-Id: <20230525184238.1943072-1-sashal@kernel.org>
Date:   Thu, 25 May 2023 14:42:10 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Maxim Kochetkov <fido_max@...ox.ru>,
        Sasha Levin <sashal@...nel.org>, lgirdwood@...il.com,
        broonie@...nel.org, perex@...ex.cz, tiwai@...e.com,
        ckeepax@...nsource.cirrus.com, nicolas.ferre@...rochip.com,
        u.kleine-koenig@...gutronix.de, alsa-devel@...a-project.org
Subject: [PATCH AUTOSEL 5.4 01/27] ASoC: dwc: limit the number of overrun messages

From: Maxim Kochetkov <fido_max@...ox.ru>

[ Upstream commit ab6ecfbf40fccf74b6ec2ba7ed6dd2fc024c3af2 ]

On slow CPU (FPGA/QEMU emulated) printing overrun messages from
interrupt handler to uart console may leads to more overrun errors.
So use dev_err_ratelimited to limit the number of error messages.

Signed-off-by: Maxim Kochetkov <fido_max@...ox.ru
Link: https://lore.kernel.org/r/20230505062820.21840-1-fido_max@inbox.ru
Signed-off-by: Mark Brown <broonie@...nel.org
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/dwc/dwc-i2s.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/dwc/dwc-i2s.c b/sound/soc/dwc/dwc-i2s.c
index 65112b9d8588a..90b8814d7506a 100644
--- a/sound/soc/dwc/dwc-i2s.c
+++ b/sound/soc/dwc/dwc-i2s.c
@@ -132,13 +132,13 @@ static irqreturn_t i2s_irq_handler(int irq, void *dev_id)
 
 		/* Error Handling: TX */
 		if (isr[i] & ISR_TXFO) {
-			dev_err(dev->dev, "TX overrun (ch_id=%d)\n", i);
+			dev_err_ratelimited(dev->dev, "TX overrun (ch_id=%d)\n", i);
 			irq_valid = true;
 		}
 
 		/* Error Handling: TX */
 		if (isr[i] & ISR_RXFO) {
-			dev_err(dev->dev, "RX overrun (ch_id=%d)\n", i);
+			dev_err_ratelimited(dev->dev, "RX overrun (ch_id=%d)\n", i);
 			irq_valid = true;
 		}
 	}
-- 
2.39.2