Commit 5f62af9f authored by Thorsten Blum's avatar Thorsten Blum Committed by Greg Kroah-Hartman
Browse files

devtmpfs: Replace simple_strtoul with kstrtoint in mount_param 



Replace simple_strtoul() with the recommended kstrtoint() for parsing
the 'devtmpfs.mount=' boot parameter. Unlike simple_strtoul(), which
returns an unsigned long, kstrtoint() converts the string directly to
int and avoids implicit casting.

Check the return value of kstrtoint() and reject invalid values. This
adds error handling while preserving behavior for existing values, and
removes use of the deprecated simple_strtoul() helper. The current code
silently sets 'mount_dev = 0' if parsing fails, instead of leaving the
default value (IS_ENABLED(CONFIG_DEVTMPFS_MOUNT)) unchanged.

Signed-off-by: default avatarThorsten Blum <thorsten.blum@linux.dev>
Link: https://patch.msgid.link/20251220125930.76836-2-thorsten.blum@linux.dev


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 99aa03f9

drivers/base/devtmpfs.c

+1 −2
Original line number Diff line number Diff line
@@ -56,8 +56,7 @@ static struct req { 


static int __init mount_param(char *str)

{

	mount_dev = simple_strtoul(str, NULL, 0);

	return 1;

	return kstrtoint(str, 0, &mount_dev) == 0;

}

__setup("devtmpfs.mount=", mount_param);