diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index 7b03f9241d660e0b4bdd875c42b6f908603108f7..2e5ce848513e40b0f2185c0fffda4bb4c8a3de89 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -65,11 +65,6 @@ config GENERIC_CALIBRATE_DELAY
 	bool
 	default y
 
-config IRQCHIP_DEMUX_GPIO
-	bool
-	depends on (BF52x || BF53x || BF561 || BF54x)
-	default y
-
 source "init/Kconfig"
 source "kernel/Kconfig.preempt"
 
diff --git a/arch/blackfin/mach-bf533/boards/H8606.c b/arch/blackfin/mach-bf533/boards/H8606.c
index b79669a84aca883827537b8de8db1f51a6d68369..caf0a86665e373167c61d902fdeef07b51ab6587 100644
--- a/arch/blackfin/mach-bf533/boards/H8606.c
+++ b/arch/blackfin/mach-bf533/boards/H8606.c
@@ -94,10 +94,6 @@ static struct resource smc91x_resources[] = {
 		.end = IRQ_PROG_INTB,
 		.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
 	}, {
-		/*
-		 *  denotes the flag pin and is used directly if
-		 *  CONFIG_IRQCHIP_DEMUX_GPIO is defined.
-		 */
 		.start = IRQ_PF7,
 		.end = IRQ_PF7,
 		.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
diff --git a/arch/blackfin/mach-bf533/boards/generic_board.c b/arch/blackfin/mach-bf533/boards/generic_board.c
index 310b7772c458cf512e1dfbf341d9af5fb9666b34..e359a0d6467fd846c66c68e9fce44c480b877582 100644
--- a/arch/blackfin/mach-bf533/boards/generic_board.c
+++ b/arch/blackfin/mach-bf533/boards/generic_board.c
@@ -58,10 +58,6 @@ static struct resource smc91x_resources[] = {
 		.end = IRQ_PROG_INTB,
 		.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
 	}, {
-		/*
-		 *  denotes the flag pin and is used directly if
-		 *  CONFIG_IRQCHIP_DEMUX_GPIO is defined.
-		 */
 		.start = IRQ_PF7,
 		.end = IRQ_PF7,
 		.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
diff --git a/arch/blackfin/mach-bf561/boards/generic_board.c b/arch/blackfin/mach-bf561/boards/generic_board.c
index 46816be4b2bab8dac67a052f5bd00f4cddd68b38..fc80c5d059f8b28cbd29471f37c152f7d21e9322 100644
--- a/arch/blackfin/mach-bf561/boards/generic_board.c
+++ b/arch/blackfin/mach-bf561/boards/generic_board.c
@@ -48,10 +48,6 @@ static struct resource smc91x_resources[] = {
 		.end = IRQ_PROG_INTB,
 		.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
 	}, {
-		/*
-		 *  denotes the flag pin and is used directly if
-		 *  CONFIG_IRQCHIP_DEMUX_GPIO is defined.
-		 */
 		.start = IRQ_PF9,
 		.end = IRQ_PF9,
 		.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
diff --git a/arch/blackfin/mach-bf561/boards/tepla.c b/arch/blackfin/mach-bf561/boards/tepla.c
index 4a17c6da2a594e10c1c8849a6880adf879669316..ec6a2207c202491f347cd3ab2f45721fb33ec634 100644
--- a/arch/blackfin/mach-bf561/boards/tepla.c
+++ b/arch/blackfin/mach-bf561/boards/tepla.c
@@ -31,10 +31,6 @@ static struct resource smc91x_resources[] = {
 		.end	= IRQ_PROG_INTB,
 		.flags	= IORESOURCE_IRQ|IORESOURCE_IRQ_HIGHLEVEL,
 	}, {
-		/*
-		 *  denotes the flag pin and is used directly if
-		 *  CONFIG_IRQCHIP_DEMUX_GPIO is defined.
-		 */
 		.start	= IRQ_PF7,
 		.end	= IRQ_PF7,
 		.flags	= IORESOURCE_IRQ|IORESOURCE_IRQ_HIGHLEVEL,
diff --git a/arch/blackfin/mach-common/ints-priority-dc.c b/arch/blackfin/mach-common/ints-priority-dc.c
index c2f05fabedc1c8f47e859d4821cecfe59e17c7b9..4882f0e801a9df1df9b40b36e4404775f1b5cc24 100644
--- a/arch/blackfin/mach-common/ints-priority-dc.c
+++ b/arch/blackfin/mach-common/ints-priority-dc.c
@@ -181,7 +181,6 @@ static struct irq_chip bf561_internal_irqchip = {
 	.unmask = bf561_internal_unmask_irq,
 };
 
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
 static unsigned short gpio_enabled[gpio_bank(MAX_BLACKFIN_GPIOS)];
 static unsigned short gpio_edge_triggered[gpio_bank(MAX_BLACKFIN_GPIOS)];
 
@@ -362,8 +361,6 @@ static void bf561_demux_gpio_irq(unsigned int inta_irq,
 
 }
 
-#endif				/* CONFIG_IRQCHIP_DEMUX_GPIO */
-
 void __init init_exception_vectors(void)
 {
 	SSYNC();
@@ -413,26 +410,21 @@ int __init init_arch_irq(void)
 			set_irq_chip(irq, &bf561_core_irqchip);
 		else
 			set_irq_chip(irq, &bf561_internal_irqchip);
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
+
 		if ((irq != IRQ_PROG0_INTA) &&
-		    (irq != IRQ_PROG1_INTA) && (irq != IRQ_PROG2_INTA)) {
-#endif
+		    (irq != IRQ_PROG1_INTA) &&
+		    (irq != IRQ_PROG2_INTA))
 			set_irq_handler(irq, handle_simple_irq);
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
-		} else {
+		else
 			set_irq_chained_handler(irq, bf561_demux_gpio_irq);
-		}
-#endif
-
 	}
 
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
 	for (irq = IRQ_PF0; irq <= IRQ_PF47; irq++) {
 		set_irq_chip(irq, &bf561_gpio_irqchip);
 		/* if configured as edge, then will be changed to do_edge_IRQ */
 		set_irq_handler(irq, handle_level_irq);
 	}
-#endif
+
 	bfin_write_IMASK(0);
 	CSYNC();
 	ilat = bfin_read_ILAT();
@@ -457,9 +449,8 @@ int __init init_arch_irq(void)
 }
 
 #ifdef CONFIG_DO_IRQ_L1
-void do_irq(int vec, struct pt_regs *fp)__attribute__((l1_text));
+__attribute__((l1_text))
 #endif
-
 void do_irq(int vec, struct pt_regs *fp)
 {
 	if (vec == EVT_IVTMR_P) {
diff --git a/arch/blackfin/mach-common/ints-priority-sc.c b/arch/blackfin/mach-common/ints-priority-sc.c
index 2d2b63567b301d80c7223e8025e4acab279847ca..147f0731087a031bb2514e29bdecdab7147138fe 100644
--- a/arch/blackfin/mach-common/ints-priority-sc.c
+++ b/arch/blackfin/mach-common/ints-priority-sc.c
@@ -308,7 +308,7 @@ static void bfin_demux_error_irq(unsigned int int_err_irq,
 }
 #endif				/* BF537_GENERIC_ERROR_INT_DEMUX */
 
-#if defined(CONFIG_IRQCHIP_DEMUX_GPIO) && !defined(CONFIG_BF54x)
+#if !defined(CONFIG_BF54x)
 
 static unsigned short gpio_enabled[gpio_bank(MAX_BLACKFIN_GPIOS)];
 static unsigned short gpio_edge_triggered[gpio_bank(MAX_BLACKFIN_GPIOS)];
@@ -464,7 +464,7 @@ static void bfin_demux_gpio_irq(unsigned int intb_irq,
 	}
 }
 
-#else				/* CONFIG_IRQCHIP_DEMUX_GPIO */
+#else				/* CONFIG_BF54x */
 
 #define NR_PINT_SYS_IRQS	4
 #define NR_PINT_BITS		32
@@ -726,7 +726,7 @@ static void bfin_demux_gpio_irq(unsigned int intb_irq,
 	}
 
 }
-#endif				/* CONFIG_IRQCHIP_DEMUX_GPIO */
+#endif
 
 void __init init_exception_vectors(void)
 {
@@ -766,10 +766,10 @@ int __init init_arch_irq(void)
 	bfin_write_SIC_IMASK1(SIC_UNMASK_ALL);
 	bfin_write_SIC_IWR0(IWR_ENABLE_ALL);
 	bfin_write_SIC_IWR1(IWR_ENABLE_ALL);
-#ifdef CONFIG_BF54x
+# ifdef CONFIG_BF54x
 	bfin_write_SIC_IMASK2(SIC_UNMASK_ALL);
 	bfin_write_SIC_IWR2(IWR_ENABLE_ALL);
-#endif
+# endif
 #else
 	bfin_write_SIC_IMASK(SIC_UNMASK_ALL);
 	bfin_write_SIC_IWR(IWR_ENABLE_ALL);
@@ -778,13 +778,13 @@ int __init init_arch_irq(void)
 
 	local_irq_disable();
 
-#if defined(CONFIG_IRQCHIP_DEMUX_GPIO) && defined(CONFIG_BF54x)
-#ifdef CONFIG_PINTx_REASSIGN
+#ifdef CONFIG_BF54x
+# ifdef CONFIG_PINTx_REASSIGN
 	pint[0]->assign = CONFIG_PINT0_ASSIGN;
 	pint[1]->assign = CONFIG_PINT1_ASSIGN;
 	pint[2]->assign = CONFIG_PINT2_ASSIGN;
 	pint[3]->assign = CONFIG_PINT3_ASSIGN;
-#endif
+# endif
 	/* Whenever PINTx_ASSIGN is altered init_pint_lut() must be executed! */
 	init_pint_lut();
 #endif
@@ -799,18 +799,17 @@ int __init init_arch_irq(void)
 #endif
 
 			switch (irq) {
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
 #if defined(CONFIG_BF53x)
 			case IRQ_PROG_INTA:
 				set_irq_chained_handler(irq,
 							bfin_demux_gpio_irq);
 				break;
-#if defined(BF537_FAMILY) && !(defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE))
+# if defined(BF537_FAMILY) && !(defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE))
 			case IRQ_MAC_RX:
 				set_irq_chained_handler(irq,
 							bfin_demux_gpio_irq);
 				break;
-#endif
+# endif
 #elif defined(CONFIG_BF54x)
 			case IRQ_PINT0:
 				set_irq_chained_handler(irq,
@@ -841,7 +840,6 @@ int __init init_arch_irq(void)
 				set_irq_chained_handler(irq,
 							bfin_demux_gpio_irq);
 				break;
-#endif
 #endif
 			default:
 				set_irq_handler(irq, handle_simple_irq);
@@ -861,7 +859,6 @@ int __init init_arch_irq(void)
 	}
 #endif
 
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
 #ifndef CONFIG_BF54x
 	for (irq = IRQ_PF0; irq < NR_IRQS; irq++) {
 #else
@@ -871,7 +868,7 @@ int __init init_arch_irq(void)
 		/* if configured as edge, then will be changed to do_edge_IRQ */
 		set_irq_handler(irq, handle_level_irq);
 	}
-#endif
+
 	bfin_write_IMASK(0);
 	CSYNC();
 	ilat = bfin_read_ILAT();
@@ -896,9 +893,8 @@ int __init init_arch_irq(void)
 }
 
 #ifdef CONFIG_DO_IRQ_L1
-void do_irq(int vec, struct pt_regs *fp) __attribute__((l1_text));
+__attribute__((l1_text))
 #endif
-
 void do_irq(int vec, struct pt_regs *fp)
 {
 	if (vec == EVT_IVTMR_P) {
diff --git a/include/asm-blackfin/mach-bf527/irq.h b/include/asm-blackfin/mach-bf527/irq.h
index 304f5bcfebe4c56478f3447ccc021eb4dece1f5f..4e2b3f2020e5a4bb71c073526023fc7ef2b1f3d8 100644
--- a/include/asm-blackfin/mach-bf527/irq.h
+++ b/include/asm-blackfin/mach-bf527/irq.h
@@ -176,11 +176,7 @@
 
 #define GPIO_IRQ_BASE	IRQ_PF0
 
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
 #define NR_IRQS     (IRQ_PH15+1)
-#else
-#define NR_IRQS     (SYS_IRQS+1)
-#endif
 
 #define IVG7            7
 #define IVG8            8
diff --git a/include/asm-blackfin/mach-bf533/irq.h b/include/asm-blackfin/mach-bf533/irq.h
index 452fb825d891122ce674eda8b169538dcfdc0f85..832e6f6122da332d91072457ffbadaf56b6e9eff 100644
--- a/include/asm-blackfin/mach-bf533/irq.h
+++ b/include/asm-blackfin/mach-bf533/irq.h
@@ -130,11 +130,7 @@ Core        Emulation               **
 
 #define GPIO_IRQ_BASE		IRQ_PF0
 
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
 #define	NR_IRQS		(IRQ_PF15+1)
-#else
-#define	NR_IRQS		SYS_IRQS
-#endif
 
 #define IVG7			7
 #define IVG8			8
diff --git a/include/asm-blackfin/mach-bf537/irq.h b/include/asm-blackfin/mach-bf537/irq.h
index 36c44bc1a917d8acd6a6da642f0dc033234d2e05..be6f2ff77f311a0153414c428252dadfbd65b786 100644
--- a/include/asm-blackfin/mach-bf537/irq.h
+++ b/include/asm-blackfin/mach-bf537/irq.h
@@ -162,11 +162,7 @@ Core        Emulation               **
 
 #define GPIO_IRQ_BASE	IRQ_PF0
 
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
 #define NR_IRQS     (IRQ_PH15+1)
-#else
-#define NR_IRQS     (IRQ_UART1_ERROR+1)
-#endif
 
 #define IVG7            7
 #define IVG8            8
diff --git a/include/asm-blackfin/mach-bf548/irq.h b/include/asm-blackfin/mach-bf548/irq.h
index 3b08cf9bd6f36ec4bf2068a90df9648c1f2c2248..9fb7bc5399a828f851df28a5c6a14e612d085156 100644
--- a/include/asm-blackfin/mach-bf548/irq.h
+++ b/include/asm-blackfin/mach-bf548/irq.h
@@ -338,11 +338,7 @@ Events         (highest priority)  EMU         0
 
 #define GPIO_IRQ_BASE	IRQ_PA0
 
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
 #define NR_IRQS     (IRQ_PJ15+1)
-#else
-#define NR_IRQS     (SYS_IRQS+1)
-#endif
 
 /* For compatibility reasons with existing code */
 
diff --git a/include/asm-blackfin/mach-bf561/irq.h b/include/asm-blackfin/mach-bf561/irq.h
index 12789927db3d976ec7e807a6416d23d477841244..83f0383957d25e099f36e04c139bf4197e7d705c 100644
--- a/include/asm-blackfin/mach-bf561/irq.h
+++ b/include/asm-blackfin/mach-bf561/irq.h
@@ -291,11 +291,7 @@
 
 #define GPIO_IRQ_BASE		IRQ_PF0
 
-#ifdef CONFIG_IRQCHIP_DEMUX_GPIO
 #define NR_IRQS			(IRQ_PF47 + 1)
-#else
-#define NR_IRQS			SYS_IRQS
-#endif
 
 #define IVG7			7
 #define IVG8			8