From 0510931ef5e89d67f1c87c792219733972069269 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Thu, 17 Dec 2015 20:53:54 +0100 Subject: [PATCH] bcma: use module_init for the main part of bus initialization MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit So far we were using fs_initcall. It was (and still is) needed because struct bus_type has to be registered early. However main bus initialization has to happen later as it requires SPROM which depends on NVRAM which depends on mtd. Solve it by using fs_initcall only for bus_register call and module_init for the rest. It affects bcma only when built-in obviously. This was tested with BCM4706 and BCM5357C0 (BCM47XX), BCM4708A0 (ARCH_BCM_5301X) and BCM43225 (PCIe card with bcma as module). Signed-off-by: Rafał Miłecki Signed-off-by: Kalle Valo --- drivers/bcma/main.c | 29 +++++++++++++++++++++++++++-- 1 file changed, 27 insertions(+), 2 deletions(-) diff --git a/drivers/bcma/main.c b/drivers/bcma/main.c index 59d8d0d14824..c466f752b067 100644 --- a/drivers/bcma/main.c +++ b/drivers/bcma/main.c @@ -668,11 +668,36 @@ static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env) core->id.rev, core->id.class); } -static int __init bcma_modinit(void) +static unsigned int bcma_bus_registered; + +/* + * If built-in, bus has to be registered early, before any driver calls + * bcma_driver_register. + * Otherwise registering driver would trigger BUG in driver_register. + */ +static int __init bcma_init_bus_register(void) { int err; + if (bcma_bus_registered) + return 0; + err = bus_register(&bcma_bus_type); + if (!err) + bcma_bus_registered = 1; + + return err; +} +#ifndef MODULE +fs_initcall(bcma_init_bus_register); +#endif + +/* Main initialization has to be done with SPI/mtd/NAND/SPROM available */ +static int __init bcma_modinit(void) +{ + int err; + + err = bcma_init_bus_register(); if (err) return err; @@ -691,7 +716,7 @@ static int __init bcma_modinit(void) return err; } -fs_initcall(bcma_modinit); +module_init(bcma_modinit); static void __exit bcma_modexit(void) { -- GitLab