diff --git a/arch/avr32/boards/atstk1000/atstk1002.c b/arch/avr32/boards/atstk1000/atstk1002.c
index 5c5cdf3b464fb8d99394e408ed49b700babc1ec4..11e7800c16329d5ae579af52506a4e7fd6bac66d 100644
--- a/arch/avr32/boards/atstk1000/atstk1002.c
+++ b/arch/avr32/boards/atstk1000/atstk1002.c
@@ -287,23 +287,7 @@ static int __init atstk1002_init(void)
 	 * ATSTK1000 uses 32-bit SDRAM interface. Reserve the
 	 * SDRAM-specific pins so that nobody messes with them.
 	 */
-	at32_reserve_pin(GPIO_PIN_PE(0));	/* DATA[16]	*/
-	at32_reserve_pin(GPIO_PIN_PE(1));	/* DATA[17]	*/
-	at32_reserve_pin(GPIO_PIN_PE(2));	/* DATA[18]	*/
-	at32_reserve_pin(GPIO_PIN_PE(3));	/* DATA[19]	*/
-	at32_reserve_pin(GPIO_PIN_PE(4));	/* DATA[20]	*/
-	at32_reserve_pin(GPIO_PIN_PE(5));	/* DATA[21]	*/
-	at32_reserve_pin(GPIO_PIN_PE(6));	/* DATA[22]	*/
-	at32_reserve_pin(GPIO_PIN_PE(7));	/* DATA[23]	*/
-	at32_reserve_pin(GPIO_PIN_PE(8));	/* DATA[24]	*/
-	at32_reserve_pin(GPIO_PIN_PE(9));	/* DATA[25]	*/
-	at32_reserve_pin(GPIO_PIN_PE(10));	/* DATA[26]	*/
-	at32_reserve_pin(GPIO_PIN_PE(11));	/* DATA[27]	*/
-	at32_reserve_pin(GPIO_PIN_PE(12));	/* DATA[28]	*/
-	at32_reserve_pin(GPIO_PIN_PE(13));	/* DATA[29]	*/
-	at32_reserve_pin(GPIO_PIN_PE(14));	/* DATA[30]	*/
-	at32_reserve_pin(GPIO_PIN_PE(15));	/* DATA[31]	*/
-	at32_reserve_pin(GPIO_PIN_PE(26));	/* SDCS		*/
+	at32_reserve_pin(GPIO_PIOE_BASE, ATMEL_EBI_PE_DATA_ALL);
 
 #ifdef CONFIG_BOARD_ATSTK1006
 	smc_set_timing(&nand_config, &nand_timing);
diff --git a/arch/avr32/boards/atstk1000/atstk1003.c b/arch/avr32/boards/atstk1000/atstk1003.c
index 134b566630b0f62a75aad5832278c4dcf7aeac91..ac31666613a14560eef995c9152deaa4b7e40595 100644
--- a/arch/avr32/boards/atstk1000/atstk1003.c
+++ b/arch/avr32/boards/atstk1000/atstk1003.c
@@ -131,23 +131,7 @@ static int __init atstk1003_init(void)
 	 * ATSTK1000 uses 32-bit SDRAM interface. Reserve the
 	 * SDRAM-specific pins so that nobody messes with them.
 	 */
-	at32_reserve_pin(GPIO_PIN_PE(0));	/* DATA[16]	*/
-	at32_reserve_pin(GPIO_PIN_PE(1));	/* DATA[17]	*/
-	at32_reserve_pin(GPIO_PIN_PE(2));	/* DATA[18]	*/
-	at32_reserve_pin(GPIO_PIN_PE(3));	/* DATA[19]	*/
-	at32_reserve_pin(GPIO_PIN_PE(4));	/* DATA[20]	*/
-	at32_reserve_pin(GPIO_PIN_PE(5));	/* DATA[21]	*/
-	at32_reserve_pin(GPIO_PIN_PE(6));	/* DATA[22]	*/
-	at32_reserve_pin(GPIO_PIN_PE(7));	/* DATA[23]	*/
-	at32_reserve_pin(GPIO_PIN_PE(8));	/* DATA[24]	*/
-	at32_reserve_pin(GPIO_PIN_PE(9));	/* DATA[25]	*/
-	at32_reserve_pin(GPIO_PIN_PE(10));	/* DATA[26]	*/
-	at32_reserve_pin(GPIO_PIN_PE(11));	/* DATA[27]	*/
-	at32_reserve_pin(GPIO_PIN_PE(12));	/* DATA[28]	*/
-	at32_reserve_pin(GPIO_PIN_PE(13));	/* DATA[29]	*/
-	at32_reserve_pin(GPIO_PIN_PE(14));	/* DATA[30]	*/
-	at32_reserve_pin(GPIO_PIN_PE(15));	/* DATA[31]	*/
-	at32_reserve_pin(GPIO_PIN_PE(26));	/* SDCS		*/
+	at32_reserve_pin(GPIO_PIOE_BASE, ATMEL_EBI_PE_DATA_ALL);
 
 #ifdef	CONFIG_BOARD_ATSTK100X_SW2_CUSTOM
 	at32_add_device_usart(1);
diff --git a/arch/avr32/boards/favr-32/setup.c b/arch/avr32/boards/favr-32/setup.c
index 1ee4faf0742dba057a8dd6db0eb589e9758d5936..1a12930df8e7956451939e49df5efe57f0adf0d0 100644
--- a/arch/avr32/boards/favr-32/setup.c
+++ b/arch/avr32/boards/favr-32/setup.c
@@ -307,28 +307,10 @@ static int __init favr32_init(void)
 	 * Favr-32 uses 32-bit SDRAM interface. Reserve the SDRAM-specific
 	 * pins so that nobody messes with them.
 	 */
-	at32_reserve_pin(GPIO_PIN_PE(0));	/* DATA[16]	*/
-	at32_reserve_pin(GPIO_PIN_PE(1));	/* DATA[17]	*/
-	at32_reserve_pin(GPIO_PIN_PE(2));	/* DATA[18]	*/
-	at32_reserve_pin(GPIO_PIN_PE(3));	/* DATA[19]	*/
-	at32_reserve_pin(GPIO_PIN_PE(4));	/* DATA[20]	*/
-	at32_reserve_pin(GPIO_PIN_PE(5));	/* DATA[21]	*/
-	at32_reserve_pin(GPIO_PIN_PE(6));	/* DATA[22]	*/
-	at32_reserve_pin(GPIO_PIN_PE(7));	/* DATA[23]	*/
-	at32_reserve_pin(GPIO_PIN_PE(8));	/* DATA[24]	*/
-	at32_reserve_pin(GPIO_PIN_PE(9));	/* DATA[25]	*/
-	at32_reserve_pin(GPIO_PIN_PE(10));	/* DATA[26]	*/
-	at32_reserve_pin(GPIO_PIN_PE(11));	/* DATA[27]	*/
-	at32_reserve_pin(GPIO_PIN_PE(12));	/* DATA[28]	*/
-	at32_reserve_pin(GPIO_PIN_PE(13));	/* DATA[29]	*/
-	at32_reserve_pin(GPIO_PIN_PE(14));	/* DATA[30]	*/
-	at32_reserve_pin(GPIO_PIN_PE(15));	/* DATA[31]	*/
-	at32_reserve_pin(GPIO_PIN_PE(26));	/* SDCS		*/
+	at32_reserve_pin(GPIO_PIOE_BASE, ATMEL_EBI_PE_DATA_ALL);
 
 	at32_select_gpio(GPIO_PIN_PB(3), 0);	/* IRQ from ADS7843 */
 
-	at32_add_system_devices();
-
 	at32_add_device_usart(0);
 
 	set_hw_addr(at32_add_device_eth(0, &eth_data[0]));
diff --git a/arch/avr32/boards/mimc200/setup.c b/arch/avr32/boards/mimc200/setup.c
index 397cbb8f44c892071cd8470dffc3231b9a82ae48..c060d4d2839e85b775dcfb46e1f436b09ebc1e28 100644
--- a/arch/avr32/boards/mimc200/setup.c
+++ b/arch/avr32/boards/mimc200/setup.c
@@ -207,8 +207,6 @@ static int __init mimc200_init(void)
 	 * reserve any pins for it.
 	 */
 
-	at32_add_system_devices();
-
 	at32_add_device_usart(0);
 	at32_add_device_usart(1);
 	at32_add_device_usart(2);
diff --git a/arch/avr32/kernel/process.c b/arch/avr32/kernel/process.c
index 134d5302b6dd21fda7f676a9bdfa3923b19e5998..43ae555ecb33995e906d3b4f5567197893b08ce9 100644
--- a/arch/avr32/kernel/process.c
+++ b/arch/avr32/kernel/process.c
@@ -18,6 +18,7 @@
 
 #include <asm/sysreg.h>
 #include <asm/ocd.h>
+#include <asm/syscalls.h>
 
 #include <mach/pm.h>
 
diff --git a/arch/avr32/kernel/signal.c b/arch/avr32/kernel/signal.c
index c5b11f9067f104bf7dafca6e3bbb1ac89a38bc4f..803d7be0938f07fe96db54761e4a442f03689a4d 100644
--- a/arch/avr32/kernel/signal.c
+++ b/arch/avr32/kernel/signal.c
@@ -19,6 +19,7 @@
 
 #include <asm/uaccess.h>
 #include <asm/ucontext.h>
+#include <asm/syscalls.h>
 
 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
 
diff --git a/arch/avr32/kernel/sys_avr32.c b/arch/avr32/kernel/sys_avr32.c
index 8e8911e55c8f27a9a55acfa7025b1d6322aba6b1..5d2daeaf356f73331489d5e21a8be7e440cb6a45 100644
--- a/arch/avr32/kernel/sys_avr32.c
+++ b/arch/avr32/kernel/sys_avr32.c
@@ -13,6 +13,7 @@
 
 #include <asm/mman.h>
 #include <asm/uaccess.h>
+#include <asm/syscalls.h>
 
 asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
 			  unsigned long prot, unsigned long flags,
diff --git a/arch/avr32/mach-at32ap/clock.c b/arch/avr32/mach-at32ap/clock.c
index 138a00a2a2d0c5c833723a0a6610e8baf6d42a5c..442f08c5e6415f198df5c7843b69d144fa336ed6 100644
--- a/arch/avr32/mach-at32ap/clock.c
+++ b/arch/avr32/mach-at32ap/clock.c
@@ -198,7 +198,7 @@ dump_clock(struct clk *parent, struct clkinf *r)
 	unsigned	i;
 
 	/* skip clocks coupled to devices that aren't registered */
-	if (parent->dev && !parent->dev->bus_id[0] && !parent->users)
+	if (parent->dev && !dev_name(parent->dev) && !parent->users)
 		return;
 
 	/* <nest spaces> name <pad to end> */
@@ -214,7 +214,7 @@ dump_clock(struct clk *parent, struct clkinf *r)
 		parent->users ? "on" : "off",	/* NOTE: not-paranoid!! */
 		clk_get_rate(parent));
 	if (parent->dev)
-		seq_printf(r->s, ", for %s", parent->dev->bus_id);
+		seq_printf(r->s, ", for %s", dev_name(parent->dev));
 	seq_printf(r->s, "\n");
 
 	/* cost of this scan is small, but not linear... */
diff --git a/arch/avr32/mach-at32ap/include/mach/at32ap700x.h b/arch/avr32/mach-at32ap/include/mach/at32ap700x.h
index a77d372f6f3ea8660ffeec96cc31b52381a04b77..5c4c971eed8e217c23da6127dfa791de982f599e 100644
--- a/arch/avr32/mach-at32ap/include/mach/at32ap700x.h
+++ b/arch/avr32/mach-at32ap/include/mach/at32ap700x.h
@@ -211,4 +211,7 @@
 
 #define ATMEL_LCDC_ALT_15BIT	(ATMEL_LCDC_CONTROL | ATMEL_LCDC_ALT_15B_DATA)
 
+/* Bitmask for all EBI data (D16..D31) pins on port E */
+#define ATMEL_EBI_PE_DATA_ALL  (0x0000FFFF)
+
 #endif /* __ASM_ARCH_AT32AP700X_H__ */
diff --git a/arch/avr32/mach-at32ap/include/mach/portmux.h b/arch/avr32/mach-at32ap/include/mach/portmux.h
index 21c79373b53f04dae129e8a3907638f180577b7e..4873024e3b961b9277d547a6e544003757e2961f 100644
--- a/arch/avr32/mach-at32ap/include/mach/portmux.h
+++ b/arch/avr32/mach-at32ap/include/mach/portmux.h
@@ -25,6 +25,6 @@ void at32_select_periph(unsigned int port, unsigned int pin,
 			unsigned int periph, unsigned long flags);
 void at32_select_gpio(unsigned int pin, unsigned long flags);
 void at32_deselect_pin(unsigned int pin);
-void at32_reserve_pin(unsigned int pin);
+void at32_reserve_pin(unsigned int port, u32 pin_mask);
 
 #endif /* __ASM_ARCH_PORTMUX_H__ */
diff --git a/arch/avr32/mach-at32ap/pio.c b/arch/avr32/mach-at32ap/pio.c
index ed81a8bcb22d44ffa733beed2b43119caca29036..09a274c9d0b72a5b336478280d4c5d9df5ec2df5 100644
--- a/arch/avr32/mach-at32ap/pio.c
+++ b/arch/avr32/mach-at32ap/pio.c
@@ -167,22 +167,29 @@ void at32_deselect_pin(unsigned int pin)
 }
 
 /* Reserve a pin, preventing anyone else from changing its configuration. */
-void __init at32_reserve_pin(unsigned int pin)
+void __init at32_reserve_pin(unsigned int port, u32 pin_mask)
 {
 	struct pio_device *pio;
-	unsigned int pin_index = pin & 0x1f;
 
-	pio = gpio_to_pio(pin);
+	/* assign and verify pio */
+	pio = gpio_to_pio(port);
 	if (unlikely(!pio)) {
-		printk("pio: invalid pin %u\n", pin);
+		printk(KERN_WARNING "pio: invalid port %u\n", port);
 		goto fail;
 	}
 
-	if (unlikely(test_and_set_bit(pin_index, &pio->pinmux_mask))) {
-		printk("%s: pin %u is busy\n", pio->name, pin_index);
+	/* Test if any of the requested pins is already muxed */
+	spin_lock(&pio_lock);
+	if (unlikely(pio->pinmux_mask & pin_mask)) {
+		printk(KERN_WARNING "%s: pin(s) busy (req. 0x%x, busy 0x%x)\n",
+		       pio->name, pin_mask, pio->pinmux_mask & pin_mask);
+		spin_unlock(&pio_lock);
 		goto fail;
 	}
 
+	/* Reserve pins */
+	pio->pinmux_mask |= pin_mask;
+	spin_unlock(&pio_lock);
 	return;
 
 fail:
diff --git a/arch/avr32/mm/cache.c b/arch/avr32/mm/cache.c
index 15a4e5e142c161aeae51f61187f5f370c0e130e1..24a74d1ca7d9a73c77d77792402a1b12b65d7c89 100644
--- a/arch/avr32/mm/cache.c
+++ b/arch/avr32/mm/cache.c
@@ -13,6 +13,7 @@
 #include <asm/cachectl.h>
 #include <asm/processor.h>
 #include <asm/uaccess.h>
+#include <asm/syscalls.h>
 
 /*
  * If you attempt to flush anything more than this, you need superuser
diff --git a/include/asm-avr32/syscalls.h b/include/asm-avr32/syscalls.h
new file mode 100644
index 0000000000000000000000000000000000000000..483d666c27c092bd2289b970a51f2edc6396b182
--- /dev/null
+++ b/include/asm-avr32/syscalls.h
@@ -0,0 +1,39 @@
+/*
+ * syscalls.h - Linux syscall interfaces (arch-specific)
+ *
+ * Copyright (c) 2008 Jaswinder Singh
+ *
+ * This file is released under the GPLv2.
+ * See the file COPYING for more details.
+ */
+
+#ifndef _ASM_AVR32_SYSCALLS_H
+#define _ASM_AVR32_SYSCALLS_H
+
+#include <linux/compiler.h>
+#include <linux/linkage.h>
+#include <linux/types.h>
+#include <linux/signal.h>
+
+/* kernel/process.c */
+asmlinkage int sys_fork(struct pt_regs *);
+asmlinkage int sys_clone(unsigned long, unsigned long,
+			 unsigned long, unsigned long,
+			 struct pt_regs *);
+asmlinkage int sys_vfork(struct pt_regs *);
+asmlinkage int sys_execve(char __user *, char __user *__user *,
+			  char __user *__user *, struct pt_regs *);
+
+/* kernel/signal.c */
+asmlinkage int sys_sigaltstack(const stack_t __user *, stack_t __user *,
+			       struct pt_regs *);
+asmlinkage int sys_rt_sigreturn(struct pt_regs *);
+
+/* kernel/sys_avr32.c */
+asmlinkage long sys_mmap2(unsigned long, unsigned long, unsigned long,
+			  unsigned long, unsigned long, off_t);
+
+/* mm/cache.c */
+asmlinkage int sys_cacheflush(int, void __user *, size_t);
+
+#endif /* _ASM_AVR32_SYSCALLS_H */