Paul Walmsley dc6d1cda04 OMAP2+: hwmod: upgrade per-hwmod mutex to a spinlock ... Change the per-hwmod mutex to a spinlock. (The per-hwmod lock serializes most post-initialization hwmod operations such as enable, idle, and shutdown.) Spinlocks are needed, because in some cases, hwmods must be enabled from timer interrupt disabled-context, such as an ISR. The current use-case that is driving this is the OMAP GPIO block ISR: it can trigger interrupts even with its clocks disabled, but these clocks are needed for register accesses in the ISR to succeed. This patch also effectively reverts commit 848240223c - this patch makes _omap_hwmod_enable() and _omap_hwmod_init() static, renames them back to _enable() and _idle(), and changes their callers to call the spinlocking versions. Previously, since omap_hwmod_{enable,init}() attempted to take mutexes, these functions could not be called while the timer interrupt was disabled; but now that the functions use spinlocks and save and restore the IRQ state, it is appropriate to call them directly. Kevin Hilman <khilman@deeprootsystems.com> originally proposed this patch - thanks Kevin. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Kevin Hilman <khilman@deeprootsystems.com> Cc: Benoît Cousson <b-cousson@ti.com>		2010-12-21 19:55:12 -07:00
..
alpha
arm	OMAP2+: hwmod: upgrade per-hwmod mutex to a spinlock	2010-12-21 19:55:12 -07:00
avr32
blackfin	BKL: remove extraneous #include <smp_lock.h>	2010-11-17 08:59:32 -08:00
cris
frv	BKL: remove extraneous #include <smp_lock.h>	2010-11-17 08:59:32 -08:00
h8300	BKL: remove extraneous #include <smp_lock.h>	2010-11-17 08:59:32 -08:00
ia64	SCSI host lock push-down	2010-11-16 13:33:23 -08:00
m32r
m68k	BKL: remove extraneous #include <smp_lock.h>	2010-11-17 08:59:32 -08:00
m68knommu	BKL: remove extraneous #include <smp_lock.h>	2010-11-17 08:59:32 -08:00
microblaze
mips	MIPS: Fix build errors in sc-mips.c	2010-12-17 19:44:35 +00:00
mn10300	clarify a usage constraint for cnt32_to_63()	2010-12-20 09:07:35 -08:00
parisc	parisc: convert the rest of the irq handlers to simple/percpu	2010-12-04 11:15:19 -05:00
powerpc	powerpc: Use call_rcu_sched() for pagetables	2010-11-30 10:42:20 +11:00
s390	[S390] nohz/s390: fix arch_needs_cpu() return value on offline cpus	2010-12-01 10:08:17 +01:00
score
sh	sh: wire up accept4 syscall (non-multiplexed path)	2010-12-14 17:58:10 +09:00
sparc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6	2010-12-14 17:34:00 -08:00
tile	arch/tile: handle rt_sigreturn() more cleanly	2010-12-17 16:59:29 -05:00
um	uml: disable winch irq before freeing handler data	2010-11-25 06:50:39 +09:00
x86	Merge branches 'x86-fixes-for-linus' and 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-12-19 10:44:54 -08:00
xtensa
.gitignore
Kconfig	jump label: Add work around to i386 gcc asm goto bug	2010-10-29 14:45:29 -04:00