From 8670b2b8b029a6650d133486be9d2ace146fd29a Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Thu, 24 Oct 2019 19:40:42 +0200 Subject: rfkill: allocate static minor udev has a feature of creating /dev/ device-nodes if it finds a devnode: modalias. This allows for auto-loading of modules that provide the node. This requires to use a statically allocated minor number for misc character devices. However, rfkill uses dynamic minor numbers and prevents auto-loading of the module. So allocate the next static misc minor number and use it for rfkill. Signed-off-by: Marcel Holtmann Link: https://lore.kernel.org/r/20191024174042.19851-1-marcel@holtmann.org Signed-off-by: Greg Kroah-Hartman --- net/rfkill/core.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'net/rfkill/core.c') diff --git a/net/rfkill/core.c b/net/rfkill/core.c index f9b08a6d8dbe..0bf9bf1ceb8f 100644 --- a/net/rfkill/core.c +++ b/net/rfkill/core.c @@ -1316,10 +1316,12 @@ static const struct file_operations rfkill_fops = { .llseek = no_llseek, }; +#define RFKILL_NAME "rfkill" + static struct miscdevice rfkill_miscdev = { - .name = "rfkill", .fops = &rfkill_fops, - .minor = MISC_DYNAMIC_MINOR, + .name = RFKILL_NAME, + .minor = RFKILL_MINOR, }; static int __init rfkill_init(void) @@ -1371,3 +1373,6 @@ static void __exit rfkill_exit(void) class_unregister(&rfkill_class); } module_exit(rfkill_exit); + +MODULE_ALIAS_MISCDEV(RFKILL_MINOR); +MODULE_ALIAS("devname:" RFKILL_NAME); -- cgit v1.2.3