linux-kernel - [PATCH v2] fbdev: pxafb: use devm

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Message-Id: <20250228071009.150971-1-raag.jadav@intel.com>
Date: Fri, 28 Feb 2025 12:40:09 +0530
From: Raag Jadav <raag.jadav@...el.com>
To: deller@....de,
	tzimmermann@...e.de,
	andriy.shevchenko@...ux.intel.com
Cc: linux-fbdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Raag Jadav <raag.jadav@...el.com>
Subject: [PATCH v2] fbdev: pxafb: use devm_kmemdup*()

Convert to use devm_kmemdup() and devm_kmemdup_array() which are
more robust.

Signed-off-by: Raag Jadav <raag.jadav@...el.com>
---

This depends on changes available on immutable tag[1].
[1] https://lore.kernel.org/r/Z7xGpz3Q4Zj6YHx7@black.fi.intel.com

v2: Split patch series per subsystem

 drivers/video/fbdev/pxafb.c | 23 +++++++++--------------
 1 file changed, 9 insertions(+), 14 deletions(-)

diff --git a/drivers/video/fbdev/pxafb.c b/drivers/video/fbdev/pxafb.c
index 4aa84853e31a..ee6da5084242 100644
--- a/drivers/video/fbdev/pxafb.c
+++ b/drivers/video/fbdev/pxafb.c
@@ -2233,32 +2233,27 @@ static int pxafb_probe(struct platform_device *dev)
 {
 	struct pxafb_info *fbi;
 	struct pxafb_mach_info *inf, *pdata;
-	int i, irq, ret;
+	int irq, ret;
 
 	dev_dbg(&dev->dev, "pxafb_probe\n");
 
 	ret = -ENOMEM;
 	pdata = dev_get_platdata(&dev->dev);
-	inf = devm_kmalloc(&dev->dev, sizeof(*inf), GFP_KERNEL);
-	if (!inf)
-		goto failed;
-
 	if (pdata) {
-		*inf = *pdata;
-		inf->modes =
-			devm_kmalloc_array(&dev->dev, pdata->num_modes,
-					   sizeof(inf->modes[0]), GFP_KERNEL);
+		inf = devm_kmemdup(&dev->dev, pdata, sizeof(*pdata), GFP_KERNEL);
+		if (!inf)
+			goto failed;
+
+		inf->modes = devm_kmemdup_array(&dev->dev, pdata->modes, pdata->num_modes,
+						sizeof(*pdata->modes), GFP_KERNEL);
 		if (!inf->modes)
 			goto failed;
-		for (i = 0; i < inf->num_modes; i++)
-			inf->modes[i] = pdata->modes[i];
 	} else {
 		inf = of_pxafb_of_mach_info(&dev->dev);
+		if (IS_ERR_OR_NULL(inf))
+			goto failed;
 	}
 
-	if (IS_ERR_OR_NULL(inf))
-		goto failed;
-
 	ret = pxafb_parse_options(&dev->dev, g_options, inf);
 	if (ret < 0)
 		goto failed;

base-commit: b8c38ccb2ca52b9a38cfeb9f89abab5d6e713221
-- 
2.34.1