Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upst…

…ream-linus

Pull MIPS fixes from Ralf Baechle:
 "Another round of MIPS fixes for 4.2.

  Things are looking quite decent at this stage but the recent work on
  the FPU support took its toll:

   - fix an incorrect overly restrictive ifdef

   - select O32 64-bit FP support for O32 binary compatibility

   - remove workarounds for Sibyte SB1250 Pass1 parts.  There are rare
     fixing the workarounds is not worth the effort.

   - patch up an outdated and now incorrect comment"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: fpu.h: Allow 64-bit FPU on a 64-bit MIPS R6 CPU
  MIPS: SB1: Remove support for Pass 1 parts.
  MIPS: Require O32 FP64 support for MIPS64 with O32 compat
  MIPS: asm-offset.c: Patch up various comments refering to the old filename.

arch/mips/Kconfig

@@ -1427,6 +1427,7 @@ config CPU_MIPS64_R6
 	select CPU_SUPPORTS_HIGHMEM
 	select CPU_SUPPORTS_MSA
 	select GENERIC_CSUM
+	select MIPS_O32_FP64_SUPPORT if MIPS32_O32
 	help
 	  Choose this option to build a kernel for release 6 or later of the
 	  MIPS64 architecture.  New MIPS processors, starting with the Warrior
@@ -2262,11 +2263,6 @@ config MIPS_CM
 config MIPS_CPC
 	bool
 
-config SB1_PASS_1_WORKAROUNDS
-	bool
-	depends on CPU_SB1_PASS_1
-	default y
-
 config SB1_PASS_2_WORKAROUNDS
 	bool
 	depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)

arch/mips/Makefile

@@ -181,13 +181,6 @@ cflags-$(CONFIG_CPU_R4000_WORKAROUNDS)	+= $(call cc-option,-mfix-r4000,)
 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS)	+= $(call cc-option,-mfix-r4400,)
 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS)	+= $(call cc-option,-mno-daddi,)
 
-ifdef CONFIG_CPU_SB1
-ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
-KBUILD_AFLAGS_MODULE += -msb1-pass1-workarounds
-KBUILD_CFLAGS_MODULE += -msb1-pass1-workarounds
-endif
-endif
-
 # For smartmips configurations, there are hundreds of warnings due to ISA overrides
 # in assembly and header files. smartmips is only supported for MIPS32r1 onwards
 # and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or

arch/mips/include/asm/fpu.h

@@ -74,7 +74,7 @@ static inline int __enable_fpu(enum fpu_mode mode)
 		goto fr_common;
 
 	case FPU_64BIT:
-#if !(defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS32_R6) \
+#if !(defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR6) \
       || defined(CONFIG_64BIT))
 		/* we only have a 32-bit FPU */
 		return SIGFPE;

arch/mips/include/asm/mach-sibyte/war.h

@@ -13,8 +13,7 @@
 #define R4600_V2_HIT_CACHEOP_WAR	0
 #define R5432_CP0_INTERRUPT_WAR		0
 
-#if defined(CONFIG_SB1_PASS_1_WORKAROUNDS) || \
-    defined(CONFIG_SB1_PASS_2_WORKAROUNDS)
+#if defined(CONFIG_SB1_PASS_2_WORKAROUNDS)
 
 #ifndef __ASSEMBLY__
 extern int sb1250_m3_workaround_needed(void);

arch/mips/include/uapi/asm/sigcontext.h

@@ -16,7 +16,7 @@
 
 /*
  * Keep this struct definition in sync with the sigcontext fragment
- * in arch/mips/tools/offset.c
+ * in arch/mips/kernel/asm-offsets.c
  */
 struct sigcontext {
 	unsigned int		sc_regmask;	/* Unused */
@@ -46,7 +46,7 @@ struct sigcontext {
 #include <linux/posix_types.h>
 /*
  * Keep this struct definition in sync with the sigcontext fragment
- * in arch/mips/tools/offset.c
+ * in arch/mips/kernel/asm-offsets.c
  *
  * Warning: this structure illdefined with sc_badvaddr being just an unsigned
  * int so it was changed to unsigned long in 2.6.0-test1.  This may break

arch/mips/kernel/asm-offsets.c

@@ -1,5 +1,5 @@
 /*
- * offset.c: Calculate pt_regs and task_struct offsets.
+ * asm-offsets.c: Calculate pt_regs and task_struct offsets.
  *
  * Copyright (C) 1996 David S. Miller
  * Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003 Ralf Baechle

arch/mips/sibyte/Kconfig

@@ -81,11 +81,6 @@ choice
 	prompt "SiByte SOC Stepping"
 	depends on SIBYTE_SB1xxx_SOC
 
-config CPU_SB1_PASS_1
-	bool "1250 Pass1"
-	depends on SIBYTE_SB1250
-	select CPU_HAS_PREFETCH
-
 config CPU_SB1_PASS_2_1250
 	bool "1250 An"
 	depends on SIBYTE_SB1250

arch/mips/sibyte/common/bus_watcher.c

@@ -81,10 +81,7 @@ void check_bus_watcher(void)
 {
 	u32 status, l2_err, memio_err;
 
-#ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
-	/* Destructive read, clears register and interrupt */
-	status = csr_in32(IOADDR(A_SCD_BUS_ERR_STATUS));
-#elif defined(CONFIG_SIBYTE_BCM112X) || defined(CONFIG_SIBYTE_SB1250)
+#if defined(CONFIG_SIBYTE_BCM112X) || defined(CONFIG_SIBYTE_SB1250)
 	/* Use non-destructive register */
 	status = csr_in32(IOADDR(A_SCD_BUS_ERR_STATUS_DEBUG));
 #elif defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)

arch/mips/sibyte/sb1250/setup.c

@@ -202,12 +202,10 @@ void __init sb1250_setup(void)
 
 	switch (war_pass) {
 	case K_SYS_REVISION_BCM1250_PASS1:
-#ifndef CONFIG_SB1_PASS_1_WORKAROUNDS
 		printk("@@@@ This is a BCM1250 A0-A2 (Pass 1) board, "
 			    "and the kernel doesn't have the proper "
 			    "workarounds compiled in. @@@@\n");
 		bad_config = 1;
-#endif
 		break;
 	case K_SYS_REVISION_BCM1250_PASS2:
 		/* Pass 2 - easiest as default for now - so many numbers */

drivers/net/ethernet/broadcom/sb1250-mac.c

@@ -1508,16 +1508,7 @@ static void sbmac_channel_start(struct sbmac_softc *s)
 	__raw_writeq(reg, port);
 	port = s->sbm_base + R_MAC_ETHERNET_ADDR;
 
-#ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
-	/*
-	 * Pass1 SOCs do not receive packets addressed to the
-	 * destination address in the R_MAC_ETHERNET_ADDR register.
-	 * Set the value to zero.
-	 */
-	__raw_writeq(0, port);
-#else
 	__raw_writeq(reg, port);
-#endif
 
 	/*
 	 * Set the receive filter for no packets, and write values