linux-kernel - [PATCH AUTOSEL 5.15 27/31] ata: pata_arasan_cf: Use dev_err_probe() instead dev_err() in data

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Message-Id: <20230813160605.1080385-27-sashal@kernel.org>
Date:   Sun, 13 Aug 2023 12:06:00 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Minjie Du <duminjie@...o.com>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Sergey Shtylyov <s.shtylyov@....ru>,
        Damien Le Moal <dlemoal@...nel.org>,
        Sasha Levin <sashal@...nel.org>, vireshk@...nel.org,
        linux-ide@...r.kernel.org
Subject: [PATCH AUTOSEL 5.15 27/31] ata: pata_arasan_cf: Use dev_err_probe() instead dev_err() in data_xfer()

From: Minjie Du <duminjie@...o.com>

[ Upstream commit 4139f992c49356391fb086c0c8ce51f66c26d623 ]

It is possible for dma_request_chan() to return EPROBE_DEFER, which
means acdev->host->dev is not ready yet. At this point dev_err() will
have no output. Use dev_err_probe() instead.

Signed-off-by: Minjie Du <duminjie@...o.com>
Acked-by: Viresh Kumar <viresh.kumar@...aro.org>
Reviewed-by: Sergey Shtylyov <s.shtylyov@....ru>
Signed-off-by: Damien Le Moal <dlemoal@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/ata/pata_arasan_cf.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/ata/pata_arasan_cf.c b/drivers/ata/pata_arasan_cf.c
index 63f39440a9b42..4ba02f082f962 100644
--- a/drivers/ata/pata_arasan_cf.c
+++ b/drivers/ata/pata_arasan_cf.c
@@ -528,7 +528,8 @@ static void data_xfer(struct work_struct *work)
 	/* dma_request_channel may sleep, so calling from process context */
 	acdev->dma_chan = dma_request_chan(acdev->host->dev, "data");
 	if (IS_ERR(acdev->dma_chan)) {
-		dev_err(acdev->host->dev, "Unable to get dma_chan\n");
+		dev_err_probe(acdev->host->dev, PTR_ERR(acdev->dma_chan),
+			      "Unable to get dma_chan\n");
 		acdev->dma_chan = NULL;
 		goto chan_request_fail;
 	}
-- 
2.40.1