linux-kernel - [PATCH v2 3/4] dmaengine: Add a comment on why it's okay when kasprintf() fails

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Message-ID: <20241008173351.2246796-4-andriy.shevchenko@linux.intel.com>
Date: Tue,  8 Oct 2024 20:27:46 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Vinod Koul <vkoul@...nel.org>,
	Paul Cercueil <paul@...pouillou.net>,
	dmaengine@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org
Cc: Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v2 3/4] dmaengine: Add a comment on why it's okay when kasprintf() fails

Add a comment in dma_request_chan() to clarify kasprintf() missing return
value check and it is correct functionality.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/dma/dmaengine.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index c1357d7f3dc6..dd4224d90f07 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -854,8 +854,8 @@ struct dma_chan *dma_request_chan(struct device *dev, const char *name)
 
 found:
 #ifdef CONFIG_DEBUG_FS
-	chan->dbg_client_name = kasprintf(GFP_KERNEL, "%s:%s", dev_name(dev),
-					  name);
+	chan->dbg_client_name = kasprintf(GFP_KERNEL, "%s:%s", dev_name(dev), name);
+	/* No functional issue if it fails, users are supposed to test before use */
 #endif
 
 	chan->name = kasprintf(GFP_KERNEL, "dma:%s", name);
-- 
2.43.0.rc1.1336.g36b5255a03ac