From: Prathu Baronia <prathubaronia2011@gmail.com>
To: prathubaronia2011@gmail.com,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Fabio M. De Francesco" <fmdefrancesco@gmail.com>,
"Khadija Kamran" <kamrankhadijadj@gmail.com>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org
Cc: dan.carpenter@linaro.org, error27@gmail.com, lkp@intel.com,
oe-kbuild-all@lists.linux.dev, oe-kbuild@lists.linux.dev
Subject: [PATCH v5 1/2] axis-fifo: use devm_kasprintf() for allocating formatted strings
Date: Fri, 16 Jun 2023 20:55:59 +0530 [thread overview]
Message-ID: <20230616152602.33232-1-prathubaronia2011@gmail.com> (raw)
In-Reply-To: <ZIiTL5bzMUgs3L5K@redkillpc>
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. Allocate the device name with a unique identifier
instead of a kernel address.
Signed-off-by: Prathu Baronia <prathubaronia2011@gmail.com>
---
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..5e070e00e27a 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_%d", DRIVER_NAME, pdev->id);
+ if (!device_name) {
+ rc = -ENOMEM;
+ goto err_initial;
+ }
dev_dbg(fifo->dt_device, "device name [%s]\n", device_name);
/* ----------------------------
base-commit: fb054096aea0576f0c0a61c598e5e9676443ee86
--
2.34.1
next prev parent reply other threads:[~2023-06-16 15:26 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-13 21:40 [PATCH] axis-fifo: use devm_kasprintf for device name Prathu Baronia
2023-05-14 6:37 ` Greg Kroah-Hartman
2023-05-14 13:01 ` Prathu Baronia
2023-05-14 13:01 ` [PATCH v2 1/2] axis-fifo: use devm_kasprintf() for allocating formatted strings Prathu Baronia
2023-05-15 7:42 ` Dan Carpenter
2023-05-18 14:31 ` Prathu Baronia
2023-05-18 14:51 ` [PATCH v3 " Prathu Baronia
2023-05-18 14:51 ` [PATCH v3 2/2] axis-fifo: cleanup space issues with fops struct Prathu Baronia
2023-05-27 7:35 ` [PATCH v3 1/2] axis-fifo: use devm_kasprintf() for allocating formatted strings Greg KH
2023-05-27 8:53 ` Prathu Baronia
2023-05-27 11:50 ` [PATCH v4 1/3] axis-fifo: fix smatch warning for format specifier Prathu Baronia
2023-05-27 11:50 ` [PATCH v4 2/3] axis-fifo: use devm_kasprintf() for allocating formatted strings Prathu Baronia
2023-05-28 9:00 ` Greg Kroah-Hartman
2023-06-13 16:03 ` Prathu Baronia
2023-05-27 11:51 ` [PATCH v4 3/3] axis-fifo: cleanup space issues with fops struct Prathu Baronia
2023-05-27 22:31 ` Uwe Kleine-König
2023-05-28 8:57 ` Greg Kroah-Hartman
2023-06-13 16:01 ` Prathu Baronia
2023-06-13 15:56 ` Prathu Baronia
2023-05-28 8:59 ` [PATCH v4 1/3] axis-fifo: fix smatch warning for format specifier Greg Kroah-Hartman
2023-06-13 16:02 ` Prathu Baronia
2023-06-16 15:25 ` Prathu Baronia [this message]
2023-06-16 15:26 ` [PATCH v5 2/2] axis-fifo: remove the unnecessary dev_info() Prathu Baronia
2023-06-17 14:00 ` [PATCH v5 1/2] axis-fifo: use devm_kasprintf() for allocating formatted strings Greg Kroah-Hartman
2023-06-19 6:43 ` Prathu Baronia
2023-06-19 16:22 ` [PATCH v6 " Prathu Baronia
2023-06-19 16:22 ` [PATCH v6 2/2] axis-fifo: change device name by assigning unique device id Prathu Baronia
2023-06-20 5:18 ` [PATCH v6 1/2] axis-fifo: use devm_kasprintf() for allocating formatted strings Dan Carpenter
2023-06-20 9:24 ` Greg Kroah-Hartman
2023-05-14 13:01 ` [PATCH v2 2/2] axis-fifo: cleanup space issues with fops struct Prathu Baronia
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