Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: (27 commits)
  Blackfin: fix dma-mapping build errors
  Blackfin: hook up new perf_counter_open syscall
  Blackfin: drop BF535-specific text for exception 0x2A (unaligned instruction)
  Blackfin: fix early crash when booting on wrong cpu
  Blackfin: fix GPTMR0_CLOCKSOURCE dependency on BFIN_GPTIMERS
  Blackfin: drop unused ISP1760 port1_disable from board resources
  Blackfin: bf526-ezbrd: handle different SDRAM chips
  Blackfin: fix typo in TRAS define in mem_init.h header
  Blackfin: unify memory map headers
  Blackfin: stick the CPU name into boot image name
  Blackfin: update defconfigs
  Blackfin: decouple unrelated cache settings to get exact behavior
  Blackfin: update I-pipe patch level
  Blackfin: remove obsolete mcount support from I-pipe code
  Blackfin: allow CONFIG_TICKSOURCE_GPTMR0 with interrupt pipeline
  Blackfin: convert interrupt pipeline to irqflags
  Blackfin: allow people to select BF51x-0.1 silicon rev
  Blackfin: bf526-ezbrd: set SPI flash resources to SST device
  Blackfin: fix accidental reset in some boot modes
  Blackfin: abstract irq14 lowering in do_irq
  ...

1 files changed, 17 insertions, 43 deletions

diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c
index d279552fe9b..8eeb457ce5d 100644
--- a/arch/blackfin/kernel/traps.c
+++ b/arch/blackfin/kernel/traps.c
@@ -37,6 +37,7 @@
 #include <asm/traps.h>
 #include <asm/cacheflush.h>
 #include <asm/cplb.h>
+#include <asm/dma.h>
 #include <asm/blackfin.h>
 #include <asm/irq_handler.h>
 #include <linux/irq.h>
@@ -636,57 +637,30 @@ asmlinkage void trap_c(struct pt_regs *fp)
  */
 static bool get_instruction(unsigned short *val, unsigned short *address)
 {
-
-	unsigned long addr;
-
-	addr = (unsigned long)address;
+	unsigned long addr = (unsigned long)address;
 
 	/* Check for odd addresses */
 	if (addr & 0x1)
 		return false;
 
-	/* Check that things do not wrap around */
-	if (addr > (addr + 2))
+	/* MMR region will never have instructions */
+	if (addr >= SYSMMR_BASE)
 		return false;
 
-	/*
-	 * Since we are in exception context, we need to do a little address checking
-	 * We need to make sure we are only accessing valid memory, and
-	 * we don't read something in the async space that can hang forever
-	 */
-	if ((addr >= FIXED_CODE_START && (addr + 2) <= physical_mem_end) ||
-#if L2_LENGTH != 0
-	    (addr >= L2_START && (addr + 2) <= (L2_START + L2_LENGTH)) ||
-#endif
-	    (addr >= BOOT_ROM_START && (addr + 2) <= (BOOT_ROM_START + BOOT_ROM_LENGTH)) ||
-#if L1_DATA_A_LENGTH != 0
-	    (addr >= L1_DATA_A_START && (addr + 2) <= (L1_DATA_A_START + L1_DATA_A_LENGTH)) ||
-#endif
-#if L1_DATA_B_LENGTH != 0
-	    (addr >= L1_DATA_B_START && (addr + 2) <= (L1_DATA_B_START + L1_DATA_B_LENGTH)) ||
-#endif
-	    (addr >= L1_SCRATCH_START && (addr + 2) <= (L1_SCRATCH_START + L1_SCRATCH_LENGTH)) ||
-	    (!(bfin_read_EBIU_AMBCTL0() & B0RDYEN) &&
-	       addr >= ASYNC_BANK0_BASE && (addr + 2) <= (ASYNC_BANK0_BASE + ASYNC_BANK0_SIZE)) ||
-	    (!(bfin_read_EBIU_AMBCTL0() & B1RDYEN) &&
-	       addr >= ASYNC_BANK1_BASE && (addr + 2) <= (ASYNC_BANK1_BASE + ASYNC_BANK1_SIZE)) ||
-	    (!(bfin_read_EBIU_AMBCTL1() & B2RDYEN) &&
-	       addr >= ASYNC_BANK2_BASE && (addr + 2) <= (ASYNC_BANK2_BASE + ASYNC_BANK1_SIZE)) ||
-	    (!(bfin_read_EBIU_AMBCTL1() & B3RDYEN) &&
-	      addr >= ASYNC_BANK3_BASE && (addr + 2) <= (ASYNC_BANK3_BASE + ASYNC_BANK1_SIZE))) {
-		*val = *address;
-		return true;
+	switch (bfin_mem_access_type(addr, 2)) {
+		case BFIN_MEM_ACCESS_CORE:
+		case BFIN_MEM_ACCESS_CORE_ONLY:
+			*val = *address;
+			return true;
+		case BFIN_MEM_ACCESS_DMA:
+			dma_memcpy(val, address, 2);
+			return true;
+		case BFIN_MEM_ACCESS_ITEST:
+			isram_memcpy(val, address, 2);
+			return true;
+		default: /* invalid access */
+			return false;
 	}
-
-#if L1_CODE_LENGTH != 0
-	if (addr >= L1_CODE_START && (addr + 2) <= (L1_CODE_START + L1_CODE_LENGTH)) {
-		isram_memcpy(val, address, 2);
-		return true;
-	}
-#endif
-
-
-	return false;
 }
 
 /*