From 673c0c00382ed807f09d94e806f3519ddeeb4f70 Mon Sep 17 00:00:00 2001 From: David Brownell Date: Wed, 15 Oct 2008 22:02:46 -0700 Subject: [PATCH] spi: core and gpio expanders use subsys_init Make the SPI external GPIO expander drivers register themselves at subsys_initcall() time when they're statically linked, and make the SPI core do its driver model initialization earlier so that's safe. SOC-integrated GPIOs are available starting very early -- often before initcalls start to run, or earily in arch_initcall() at latest -- so this improves consistency, letting more subsystems rely on GPIOs being usable by their own subsys_initcall() code. Signed-off-by: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/gpio/max7301.c | 6 ++++-- drivers/gpio/mcp23s08.c | 5 ++++- drivers/spi/spi.c | 2 +- 3 files changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/gpio/max7301.c b/drivers/gpio/max7301.c index 39c795ad8312..1b5ad97b9e5b 100644 --- a/drivers/gpio/max7301.c +++ b/drivers/gpio/max7301.c @@ -325,13 +325,15 @@ static int __init max7301_init(void) { return spi_register_driver(&max7301_driver); } +/* register after spi postcore initcall and before + * subsys initcalls that may rely on these GPIOs + */ +subsys_initcall(max7301_init); static void __exit max7301_exit(void) { spi_unregister_driver(&max7301_driver); } - -module_init(max7301_init); module_exit(max7301_exit); MODULE_AUTHOR("Juergen Beisert"); diff --git a/drivers/gpio/mcp23s08.c b/drivers/gpio/mcp23s08.c index 8a1b405fefda..89c1d222e9d1 100644 --- a/drivers/gpio/mcp23s08.c +++ b/drivers/gpio/mcp23s08.c @@ -419,7 +419,10 @@ static int __init mcp23s08_init(void) { return spi_register_driver(&mcp23s08_driver); } -module_init(mcp23s08_init); +/* register after spi postcore initcall and before + * subsys initcalls that may rely on these GPIOs + */ +subsys_initcall(mcp23s08_init); static void __exit mcp23s08_exit(void) { diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 2de6b0e72f3f..3734dc9708e1 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -738,5 +738,5 @@ err0: * driver registration) _could_ be dynamically linked (modular) ... costs * include needing to have boardinfo data structures be much more public. */ -subsys_initcall(spi_init); +postcore_initcall(spi_init); -- 2.30.2