Merge tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pul removal of obsolete architecture ports from Arnd Bergmann:
 "This removes the entire architecture code for blackfin, cris, frv,
  m32r, metag, mn10300, score, and tile, including the associated device
  drivers.

  I have been working with the (former) maintainers for each one to
  ensure that my interpretation was right and the code is definitely
  unused in mainline kernels. Many had fond memories of working on the
  respective ports to start with and getting them included in upstream,
  but also saw no point in keeping the port alive without any users.

  In the end, it seems that while the eight architectures are extremely
  different, they all suffered the same fate: There was one company in
  charge of an SoC line, a CPU microarchitecture and a software
  ecosystem, which was more costly than licensing newer off-the-shelf
  CPU cores from a third party (typically ARM, MIPS, or RISC-V). It
  seems that all the SoC product lines are still around, but have not
  used the custom CPU architectures for several years at this point. In
  contrast, CPU instruction sets that remain popular and have actively
  maintained kernel ports tend to all be used across multiple licensees.

  [ See the new nds32 port merged in the previous commit for the next
    generation of "one company in charge of an SoC line, a CPU
    microarchitecture and a software ecosystem"   - Linus ]

  The removal came out of a discussion that is now documented at
  https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
  marking any ports as deprecated but remove them all at once after I
  made sure that they are all unused. Some architectures (notably tile,
  mn10300, and blackfin) are still being shipped in products with old
  kernels, but those products will never be updated to newer kernel
  releases.

  After this series, we still have a few architectures without mainline
  gcc support:

   - unicore32 and hexagon both have very outdated gcc releases, but the
     maintainers promised to work on providing something newer. At least
     in case of hexagon, this will only be llvm, not gcc.

   - openrisc, risc-v and nds32 are still in the process of finishing
     their support or getting it added to mainline gcc in the first
     place. They all have patched gcc-7.3 ports that work to some
     degree, but complete upstream support won't happen before gcc-8.1.
     Csky posted their first kernel patch set last week, their situation
     will be similar

  [ Palmer Dabbelt points out that RISC-V support is in mainline gcc
    since gcc-7, although gcc-7.3.0 is the recommended minimum  - Linus ]"

This really says it all:

 2498 files changed, 95 insertions(+), 467668 deletions(-)

* tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits)
  MAINTAINERS: UNICORE32: Change email account
  staging: iio: remove iio-trig-bfin-timer driver
  tty: hvc: remove tile driver
  tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers
  serial: remove tile uart driver
  serial: remove m32r_sio driver
  serial: remove blackfin drivers
  serial: remove cris/etrax uart drivers
  usb: Remove Blackfin references in USB support
  usb: isp1362: remove blackfin arch glue
  usb: musb: remove blackfin port
  usb: host: remove tilegx platform glue
  pwm: remove pwm-bfin driver
  i2c: remove bfin-twi driver
  spi: remove blackfin related host drivers
  watchdog: remove bfin_wdt driver
  can: remove bfin_can driver
  mmc: remove bfin_sdh driver
  input: misc: remove blackfin rotary driver
  input: keyboard: remove bf54x driver
  ...

1 files changed, 0 insertions, 131 deletions

diff --git a/arch/blackfin/include/asm/traps.h b/arch/blackfin/include/asm/traps.h
deleted file mode 100644
index cec771b8100c..000000000000
--- a/arch/blackfin/include/asm/traps.h
+++ /dev/null
@@ -1,131 +0,0 @@
-/*
- *  Copyright 2004-2009 Analog Devices Inc.
- *                 2001 Lineo, Inc
- *                        Tony Kou
- *                 1993 Hamish Macdonald
- *
- * Licensed under the GPL-2
- */
-
-#ifndef _BFIN_TRAPS_H
-#define _BFIN_TRAPS_H
-
-#define VEC_SYS		(0)
-#define VEC_EXCPT01	(1)
-#define VEC_EXCPT02	(2)
-#define VEC_EXCPT03	(3)
-#define VEC_EXCPT04	(4)
-#define VEC_EXCPT05	(5)
-#define VEC_EXCPT06	(6)
-#define VEC_EXCPT07	(7)
-#define VEC_EXCPT08	(8)
-#define VEC_EXCPT09	(9)
-#define VEC_EXCPT10	(10)
-#define VEC_EXCPT11	(11)
-#define VEC_EXCPT12	(12)
-#define VEC_EXCPT13	(13)
-#define VEC_EXCPT14	(14)
-#define VEC_EXCPT15	(15)
-#define VEC_STEP	(16)
-#define VEC_OVFLOW	(17)
-#define VEC_UNDEF_I	(33)
-#define VEC_ILGAL_I	(34)
-#define VEC_CPLB_VL	(35)
-#define VEC_MISALI_D	(36)
-#define VEC_UNCOV	(37)
-#define VEC_CPLB_M	(38)
-#define VEC_CPLB_MHIT	(39)
-#define VEC_WATCH	(40)
-#define VEC_ISTRU_VL	(41)	/*ADSP-BF535 only (MH) */
-#define VEC_MISALI_I	(42)
-#define VEC_CPLB_I_VL	(43)
-#define VEC_CPLB_I_M	(44)
-#define VEC_CPLB_I_MHIT	(45)
-#define VEC_ILL_RES	(46)	/* including unvalid supervisor mode insn */
-/* The hardware reserves (63) for future use - we use it to tell our
- * normal exception handling code we have a hardware error
- */
-#define VEC_HWERR	(63)
-
-#ifndef __ASSEMBLY__
-
-#define HWC_x2(level) \
-	"System MMR Error\n" \
-	level " - An error occurred due to an invalid access to an System MMR location\n" \
-	level "   Possible reason: a 32-bit register is accessed with a 16-bit instruction\n" \
-	level "   or a 16-bit register is accessed with a 32-bit instruction.\n"
-#define HWC_x3(level) \
-	"External Memory Addressing Error\n"
-#define EXC_0x04(level) \
-	"Unimplmented exception occurred\n" \
-	level " - Maybe you forgot to install a custom exception handler?\n"
-#define HWC_x12(level) \
-	"Performance Monitor Overflow\n"
-#define HWC_x18(level) \
-	"RAISE 5 instruction\n" \
-	level "    Software issued a RAISE 5 instruction to invoke the Hardware\n"
-#define HWC_default(level) \
-	 "Reserved\n"
-#define EXC_0x03(level) \
-	"Application stack overflow\n" \
-	level " - Please increase the stack size of the application using elf2flt -s option,\n" \
-	level "   and/or reduce the stack use of the application.\n"
-#define EXC_0x10(level) \
-	"Single step\n" \
-	level " - When the processor is in single step mode, every instruction\n" \
-	level "   generates an exception. Primarily used for debugging.\n"
-#define EXC_0x11(level) \
-	"Exception caused by a trace buffer full condition\n" \
-	level " - The processor takes this exception when the trace\n" \
-	level "   buffer overflows (only when enabled by the Trace Unit Control register).\n"
-#define EXC_0x21(level) \
-	"Undefined instruction\n" \
-	level " - May be used to emulate instructions that are not defined for\n" \
-	level "   a particular processor implementation.\n"
-#define EXC_0x22(level) \
-	"Illegal instruction combination\n" \
-	level " - See section for multi-issue rules in the Blackfin\n" \
-	level "   Processor Instruction Set Reference.\n"
-#define EXC_0x23(level) \
-	"Data access CPLB protection violation\n" \
-	level " - Attempted read or write to Supervisor resource,\n" \
-	level "   or illegal data memory access. \n"
-#define EXC_0x24(level) \
-	"Data access misaligned address violation\n" \
-	level " - Attempted misaligned data memory or data cache access.\n"
-#define EXC_0x25(level) \
-	"Unrecoverable event\n" \
-	level " - For example, an exception generated while processing a previous exception.\n"
-#define EXC_0x26(level) \
-	"Data access CPLB miss\n" \
-	level " - Used by the MMU to signal a CPLB miss on a data access.\n"
-#define EXC_0x27(level) \
-	"Data access multiple CPLB hits\n" \
-	level " - More than one CPLB entry matches data fetch address.\n"
-#define EXC_0x28(level) \
-	"Program Sequencer Exception caused by an emulation watchpoint match\n" \
-	level " - There is a watchpoint match, and one of the EMUSW\n" \
-	level "   bits in the Watchpoint Instruction Address Control register (WPIACTL) is set.\n"
-#define EXC_0x2A(level) \
-	"Instruction fetch misaligned address violation\n" \
-	level " - Attempted misaligned instruction cache fetch.\n"
-#define EXC_0x2B(level) \
-	"CPLB protection violation\n" \
-	level " - Illegal instruction fetch access (memory protection violation).\n"
-#define EXC_0x2C(level) \
-	"Instruction fetch CPLB miss\n" \
-	level " - CPLB miss on an instruction fetch.\n"
-#define EXC_0x2D(level) \
-	"Instruction fetch multiple CPLB hits\n" \
-	level " - More than one CPLB entry matches instruction fetch address.\n"
-#define EXC_0x2E(level) \
-	"Illegal use of supervisor resource\n" \
-	level " - Attempted to use a Supervisor register or instruction from User mode.\n" \
-	level "   Supervisor resources are registers and instructions that are reserved\n" \
-	level "   for Supervisor use: Supervisor only registers, all MMRs, and Supervisor\n" \
-	level "   only instructions.\n"
-
-extern void double_fault_c(struct pt_regs *fp);
-
-#endif				/* __ASSEMBLY__ */
-#endif				/* _BFIN_TRAPS_H */