From bc89663aa5c7ca620f58c34ab531ca409119becc Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Thu, 28 Jun 2012 14:42:08 +0800 Subject: [PATCH] ARM: fiq: change FIQ_START to a variable MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The commit a2be01b (ARM: only include mach/irqs.h for !SPARSE_IRQ) makes mach/irqs.h only be included for !SPARSE_IRQ build. There are a nubmer of platforms have FIQ_START defined in mach/irqs.h for FIQ support. arch/arm/mach-rpc/include/mach/irqs.h:#define FIQ_START 64 arch/arm/mach-s3c24xx/include/mach/irqs.h:#define FIQ_START IRQ_EINT0 arch/arm/plat-mxc/include/mach/irqs.h:#define FIQ_START 0 If SPARSE_IRQ is enabled for any of these platforms, the following compile error will be seen. arch/arm/kernel/fiq.c: In function ‘enable_fiq’: arch/arm/kernel/fiq.c:127:19: error: ‘FIQ_START’ undeclared (first use in this function) arch/arm/kernel/fiq.c:127:19: note: each undeclared identifier is reported only once for each function it appears in arch/arm/kernel/fiq.c: In function ‘disable_fiq’: arch/arm/kernel/fiq.c:132:20: error: ‘FIQ_START’ undeclared (first use in this function) The patch changes fiq code to have init_FIQ take FIQ_START from platforms as a parameter and assign it to variable fiq_start which is to replace FIQ_START uses in enable_fiq/disable_fiq. Signed-off-by: Shawn Guo Cc: Kukjin Kim Cc: Sascha Hauer Cc: Rob Herring Acked-by: Russell King --- arch/arm/include/asm/mach/irq.h | 2 +- arch/arm/kernel/fiq.c | 9 ++++++--- arch/arm/mach-rpc/irq.c | 2 +- arch/arm/plat-mxc/avic.c | 2 +- arch/arm/plat-mxc/tzic.c | 2 +- arch/arm/plat-s3c24xx/irq.c | 2 +- 6 files changed, 11 insertions(+), 8 deletions(-) diff --git a/arch/arm/include/asm/mach/irq.h b/arch/arm/include/asm/mach/irq.h index febe495d0c6e..15cb035309f7 100644 --- a/arch/arm/include/asm/mach/irq.h +++ b/arch/arm/include/asm/mach/irq.h @@ -17,7 +17,7 @@ struct seq_file; /* * This is internal. Do not use it. */ -extern void init_FIQ(void); +extern void init_FIQ(int); extern int show_fiq_list(struct seq_file *, int); #ifdef CONFIG_MULTI_IRQ_HANDLER diff --git a/arch/arm/kernel/fiq.c b/arch/arm/kernel/fiq.c index c32f8456aa09..2adda11f712f 100644 --- a/arch/arm/kernel/fiq.c +++ b/arch/arm/kernel/fiq.c @@ -122,14 +122,16 @@ void release_fiq(struct fiq_handler *f) while (current_fiq->fiq_op(current_fiq->dev_id, 0)); } +static int fiq_start; + void enable_fiq(int fiq) { - enable_irq(fiq + FIQ_START); + enable_irq(fiq + fiq_start); } void disable_fiq(int fiq) { - disable_irq(fiq + FIQ_START); + disable_irq(fiq + fiq_start); } EXPORT_SYMBOL(set_fiq_handler); @@ -140,7 +142,8 @@ EXPORT_SYMBOL(release_fiq); EXPORT_SYMBOL(enable_fiq); EXPORT_SYMBOL(disable_fiq); -void __init init_FIQ(void) +void __init init_FIQ(int start) { no_fiq_insn = *(unsigned long *)0xffff001c; + fiq_start = start; } diff --git a/arch/arm/mach-rpc/irq.c b/arch/arm/mach-rpc/irq.c index cf0e669eaf1a..3e4fa849c64d 100644 --- a/arch/arm/mach-rpc/irq.c +++ b/arch/arm/mach-rpc/irq.c @@ -163,6 +163,6 @@ void __init rpc_init_irq(void) } } - init_FIQ(); + init_FIQ(FIQ_START); } diff --git a/arch/arm/plat-mxc/avic.c b/arch/arm/plat-mxc/avic.c index e612cc1edede..f3d671ff7f1b 100644 --- a/arch/arm/plat-mxc/avic.c +++ b/arch/arm/plat-mxc/avic.c @@ -217,7 +217,7 @@ void __init mxc_init_irq(void __iomem *irqbase) #ifdef CONFIG_FIQ /* Initialize FIQ */ - init_FIQ(); + init_FIQ(FIQ_START); #endif printk(KERN_INFO "MXC IRQ initialized\n"); diff --git a/arch/arm/plat-mxc/tzic.c b/arch/arm/plat-mxc/tzic.c index abc90e4116f5..c60a7e416385 100644 --- a/arch/arm/plat-mxc/tzic.c +++ b/arch/arm/plat-mxc/tzic.c @@ -192,7 +192,7 @@ void __init tzic_init_irq(void __iomem *irqbase) #ifdef CONFIG_FIQ /* Initialize FIQ */ - init_FIQ(); + init_FIQ(FIQ_START); #endif pr_info("TrustZone Interrupt Controller (TZIC) initialized\n"); diff --git a/arch/arm/plat-s3c24xx/irq.c b/arch/arm/plat-s3c24xx/irq.c index bc42c04091fd..fe57bbbf166b 100644 --- a/arch/arm/plat-s3c24xx/irq.c +++ b/arch/arm/plat-s3c24xx/irq.c @@ -533,7 +533,7 @@ void __init s3c24xx_init_irq(void) int i; #ifdef CONFIG_FIQ - init_FIQ(); + init_FIQ(FIQ_START); #endif irqdbf("s3c2410_init_irq: clearing interrupt status flags\n"); -- GitLab