netdev - [PATCH v1] spi: fsl-dspi: Use dev_err_probe() in dspi_request

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20230719071239.4736-1-duminjie@vivo.com>
Date: Wed, 19 Jul 2023 07:13:02 +0000
From: 杜敏杰 <duminjie@...o.com>
To: Vladimir Oltean <olteanv@...il.com>, Mark Brown <broonie@...nel.org>,
	Richard Cochran <richardcochran@...il.com>, "open list:FREESCALE DSPI DRIVER"
	<linux-spi@...r.kernel.org>, open list <linux-kernel@...r.kernel.org>, "open
 list:PTP HARDWARE CLOCK SUPPORT" <netdev@...r.kernel.org>
CC: opensource.kernel <opensource.kernel@...o.com>,
	杜敏杰 <duminjie@...o.com>
Subject: [PATCH v1] spi: fsl-dspi: Use dev_err_probe() in dspi_request_dma()

It is possible for dma_request_chan() to return EPROBE_DEFER, which means
dev is not ready yet.
At this point dev_err() will have no output.

Signed-off-by: Minjie Du <duminjie@...o.com>
---
 drivers/spi/spi-fsl-dspi.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c
index ca41c8a8b..6aaa529b7 100644
--- a/drivers/spi/spi-fsl-dspi.c
+++ b/drivers/spi/spi-fsl-dspi.c
@@ -503,15 +503,14 @@ static int dspi_request_dma(struct fsl_dspi *dspi, phys_addr_t phy_addr)
 
 	dma->chan_rx = dma_request_chan(dev, "rx");
 	if (IS_ERR(dma->chan_rx)) {
-		dev_err(dev, "rx dma channel not available\n");
-		ret = PTR_ERR(dma->chan_rx);
-		return ret;
+		return dev_err_probe(dev, PTR_ERR(dma->chan_rx),
+							"rx dma channel not available\n");
 	}
 
 	dma->chan_tx = dma_request_chan(dev, "tx");
 	if (IS_ERR(dma->chan_tx)) {
-		dev_err(dev, "tx dma channel not available\n");
 		ret = PTR_ERR(dma->chan_tx);
+		dev_err_probe(dev, ret, "tx dma channel not available\n");
 		goto err_tx_channel;
 	}
 
-- 
2.39.0