[PATCH v2 1/2] drivers: dio: replace deprecated strcpy with strscpy in dio_init

[PATCH v2 1/2] drivers: dio: replace deprecated strcpy with strscpy in dio_init

[Thorsten Blum]

strcpy() has been deprecated [1] because it performs no bounds checking
on the destination buffer, which can lead to buffer overflows. While the
current code works correctly, replace strcpy() with the safer strscpy()
to follow secure coding best practices.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
---
 drivers/dio/dio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dio/dio.c b/drivers/dio/dio.c
index 419b3c13d491..4a3ddda97d7c 100644
--- a/drivers/dio/dio.c
+++ b/drivers/dio/dio.c
@@ -247,7 +247,7 @@ static int __init dio_init(void)
 			dev->id = prid;
 
 		dev->ipl = DIO_IPL(va);
-		strcpy(dev->name, dio_getname(dev->id));
+		strscpy(dev->name, dio_getname(dev->id));
                 printk(KERN_INFO "select code %3d: ipl %d: ID %02X", dev->scode, dev->ipl, prid);
 		if (DIO_NEEDSSECID(prid))
                         printk(":%02X", secid);

[PATCH v2 2/2] drivers: dio: use tabs and avoid continuation logging in dio_init

[Thorsten Blum]

Indent multiple lines using tabs instead of spaces. Use pr_info() and
avoid continuation logging.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
---
 drivers/dio/dio.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/dio/dio.c b/drivers/dio/dio.c
index 4a3ddda97d7c..b39ae25d060e 100644
--- a/drivers/dio/dio.c
+++ b/drivers/dio/dio.c
@@ -178,7 +178,7 @@ static int __init dio_init(void)
 	if (!MACH_IS_HP300)
 		return 0;
 
-        printk(KERN_INFO "Scanning for DIO devices...\n");
+	pr_info("Scanning for DIO devices...\n");
 
 	/* Initialize the DIO bus */
 	INIT_LIST_HEAD(&dio_bus.devices);
@@ -248,17 +248,18 @@ static int __init dio_init(void)
 
 		dev->ipl = DIO_IPL(va);
 		strscpy(dev->name, dio_getname(dev->id));
-                printk(KERN_INFO "select code %3d: ipl %d: ID %02X", dev->scode, dev->ipl, prid);
 		if (DIO_NEEDSSECID(prid))
-                        printk(":%02X", secid);
-                printk(": %s\n", dev->name);
+			pr_info("select code %3d: ipl %d: ID %02X:%02X: %s\n",
+				dev->scode, dev->ipl, prid, secid, dev->name);
+		else
+			pr_info("select code %3d: ipl %d: ID %02X: %s\n",
+				dev->scode, dev->ipl, prid, dev->name);
 
 		if (scode >= DIOII_SCBASE)
 			iounmap(va);
 		error = device_register(&dev->dev);
 		if (error) {
-			pr_err("DIO: Error registering device %s\n",
-			       dev->name);
+			pr_err("DIO: Error registering device %s\n", dev->name);
 			put_device(&dev->dev);
 			continue;
 		}

Re: [PATCH v2 2/2] drivers: dio: use tabs and avoid continuation logging in dio_init

[Geert Uytterhoeven]

Hi Thorsten,

On Mon, 4 May 2026 at 10:18, Thorsten Blum <thorsten.blum@linux.dev> wrote:
> Indent multiple lines using tabs instead of spaces. Use pr_info() and
> avoid continuation logging.
>
> Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>

Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
i.e. will queue in the m68k tree for v7.2.

> --- a/drivers/dio/dio.c
> +++ b/drivers/dio/dio.c

> @@ -248,17 +248,18 @@ static int __init dio_init(void)
>
>                 dev->ipl = DIO_IPL(va);
>                 strscpy(dev->name, dio_getname(dev->id));
> -                printk(KERN_INFO "select code %3d: ipl %d: ID %02X", dev->scode, dev->ipl, prid);
>                 if (DIO_NEEDSSECID(prid))
> -                        printk(":%02X", secid);
> -                printk(": %s\n", dev->name);
> +                       pr_info("select code %3d: ipl %d: ID %02X:%02X: %s\n",
> +                               dev->scode, dev->ipl, prid, secid, dev->name);
> +               else
> +                       pr_info("select code %3d: ipl %d: ID %02X: %s\n",
> +                               dev->scode, dev->ipl, prid, dev->name);

I'll change these "%d" to print dev->ipl to "%u" while applying.

>
>                 if (scode >= DIOII_SCBASE)
>                         iounmap(va);

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 1/2] drivers: dio: replace deprecated strcpy with strscpy in dio_init

[Geert Uytterhoeven]

On Mon, 4 May 2026 at 10:18, Thorsten Blum <thorsten.blum@linux.dev> wrote:
> strcpy() has been deprecated [1] because it performs no bounds checking
> on the destination buffer, which can lead to buffer overflows. While the
> current code works correctly, replace strcpy() with the safer strscpy()
> to follow secure coding best practices.
>
> [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy
>
> Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>

Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
i.e. will queue in the m68k tree for v7.2.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds