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authorDavid Brownell <dbrownell@users.sourceforge.net>2008-10-15 22:02:46 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-16 11:21:38 -0700
commit673c0c00382ed807f09d94e806f3519ddeeb4f70 (patch)
tree005bccdee7f27660fd2c738fbe26635f019aae96 /drivers/gpio/mcp23s08.c
parent2bec19feabd53cba75e9dab0e79afbe868a37113 (diff)
downloadop-kernel-dev-673c0c00382ed807f09d94e806f3519ddeeb4f70.zip
op-kernel-dev-673c0c00382ed807f09d94e806f3519ddeeb4f70.tar.gz
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 <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/gpio/mcp23s08.c')
-rw-r--r--drivers/gpio/mcp23s08.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpio/mcp23s08.c b/drivers/gpio/mcp23s08.c
index 8a1b405..89c1d22 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)
{
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