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Message-Id: <20230619162246.33007-1-prathubaronia2011@gmail.com>
Date: Mon, 19 Jun 2023 21:52:44 +0530
From: Prathu Baronia <prathubaronia2011@...il.com>
To: prathubaronia2011@...il.com,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Fabio M. De Francesco" <fmdefrancesco@...il.com>,
Khadija Kamran <kamrankhadijadj@...il.com>,
Uwe Kleine-König
<u.kleine-koenig@...gutronix.de>, linux-staging@...ts.linux.dev,
linux-kernel@...r.kernel.org
Cc: dan.carpenter@...aro.org, error27@...il.com, lkp@...el.com,
oe-kbuild-all@...ts.linux.dev, oe-kbuild@...ts.linux.dev
Subject: [PATCH v6 1/2] axis-fifo: use devm_kasprintf() for allocating formatted strings
In various places, string buffers of a fixed size are allocated, and
filled using snprintf() with the same fixed size, which is error-prone.
Replace this by calling devm_kasprintf() instead, which always uses the
appropriate size.
Signed-off-by: Prathu Baronia <prathubaronia2011@...il.com>
---
V5 -> V6: Split into api change and name change commits
V4 -> V5: Remove the dev_info() and use a unique identifier for dev name
V3 -> V4: Split into warning fixing and cleanup commits
V2 -> V3: Fix smatch warnings from kernel test robot
V1 -> V2: Split into logical commits and fix commit message
drivers/staging/axis-fifo/axis-fifo.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/axis-fifo/axis-fifo.c b/drivers/staging/axis-fifo/axis-fifo.c
index 7a21f2423204..7d8da9ce2db8 100644
--- a/drivers/staging/axis-fifo/axis-fifo.c
+++ b/drivers/staging/axis-fifo/axis-fifo.c
@@ -816,10 +816,6 @@ static int axis_fifo_probe(struct platform_device *pdev)
* ----------------------------
*/
- device_name = devm_kzalloc(dev, 32, GFP_KERNEL);
- if (!device_name)
- return -ENOMEM;
-
/* allocate device wrapper memory */
fifo = devm_kzalloc(dev, sizeof(*fifo), GFP_KERNEL);
if (!fifo)
@@ -857,7 +853,11 @@ static int axis_fifo_probe(struct platform_device *pdev)
dev_dbg(fifo->dt_device, "remapped memory to 0x%p\n", fifo->base_addr);
/* create unique device name */
- snprintf(device_name, 32, "%s_%pa", DRIVER_NAME, &r_mem->start);
+ device_name = devm_kasprintf(dev, GFP_KERNEL, "%s_%p", DRIVER_NAME, &r_mem->start);
+ if (!device_name) {
+ rc = -ENOMEM;
+ goto err_initial;
+ }
dev_dbg(fifo->dt_device, "device name [%s]\n", device_name);
/* ----------------------------
base-commit: 45a3e24f65e90a047bef86f927ebdc4c710edaa1
--
2.34.1
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