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authorLinus Torvalds <torvalds@g5.osdl.org>2006-09-28 14:40:39 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-28 14:40:39 -0700
commitebdea46fecae40c4d7effcd33f40918a37a1df4b (patch)
treee4312bf7f1f3d184738963a0ec300aa9fdfd55c1 /arch/arm/vfp/vfpmodule.c
parentfecf3404f4aba6d0edeba31eeb018cbb6326dff2 (diff)
parent250d375d1da45a5e08ab8baf5eaa7eb258afd82b (diff)
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (130 commits) [ARM] 3856/1: Add clocksource for Intel IXP4xx platforms [ARM] 3855/1: Add generic time support [ARM] 3873/1: S3C24XX: Add irq_chip names [ARM] 3872/1: S3C24XX: Apply consistant tabbing to irq_chips [ARM] 3871/1: S3C24XX: Fix ordering of EINT4..23 [ARM] nommu: confirms the CR_V bit in nommu mode [ARM] nommu: abort handler fixup for !CPU_CP15_MMU cores. [ARM] 3870/1: AT91: Start removing static memory mappings [ARM] 3869/1: AT91: NAND support for DK and KB9202 boards [ARM] 3868/1: AT91 hardware header update [ARM] 3867/1: AT91 GPIO update [ARM] 3866/1: AT91 clock update [ARM] 3865/1: AT91RM9200 header updates [ARM] 3862/2: S3C2410 - add basic power management support for AML M5900 series [ARM] kthread: switch arch/arm/kernel/apm.c [ARM] Off-by-one in arch/arm/common/icst* [ARM] 3864/1: Refactore sharpsl_pm [ARM] 3863/1: Add Locomo SPI Device [ARM] 3847/2: Convert LOMOMO to use struct device for GPIOs [ARM] Use CPU_CACHE_* where possible in asm/cacheflush.h ...
Diffstat (limited to 'arch/arm/vfp/vfpmodule.c')
-rw-r--r--arch/arm/vfp/vfpmodule.c40
1 files changed, 16 insertions, 24 deletions
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index 4178f6cc3d3..dedbb449632 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -40,10 +40,19 @@ unsigned int VFP_arch;
static int vfp_notifier(struct notifier_block *self, unsigned long cmd, void *v)
{
struct thread_info *thread = v;
- union vfp_state *vfp = &thread->vfpstate;
+ union vfp_state *vfp;
- switch (cmd) {
- case THREAD_NOTIFY_FLUSH:
+ if (likely(cmd == THREAD_NOTIFY_SWITCH)) {
+ /*
+ * Always disable VFP so we can lazily save/restore the
+ * old state.
+ */
+ fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_ENABLE);
+ return NOTIFY_DONE;
+ }
+
+ vfp = &thread->vfpstate;
+ if (cmd == THREAD_NOTIFY_FLUSH) {
/*
* Per-thread VFP initialisation.
*/
@@ -56,29 +65,12 @@ static int vfp_notifier(struct notifier_block *self, unsigned long cmd, void *v)
* Disable VFP to ensure we initialise it first.
*/
fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_ENABLE);
-
- /*
- * FALLTHROUGH: Ensure we don't try to overwrite our newly
- * initialised state information on the first fault.
- */
-
- case THREAD_NOTIFY_RELEASE:
- /*
- * Per-thread VFP cleanup.
- */
- if (last_VFP_context == vfp)
- last_VFP_context = NULL;
- break;
-
- case THREAD_NOTIFY_SWITCH:
- /*
- * Always disable VFP so we can lazily save/restore the
- * old state.
- */
- fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_ENABLE);
- break;
}
+ /* flush and release case: Per-thread VFP cleanup. */
+ if (last_VFP_context == vfp)
+ last_VFP_context = NULL;
+
return NOTIFY_DONE;
}