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   - unicore32 and hexagon both have very outdated gcc releases, but the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, 10 insertions, 46 deletions

diff --git a/include/uapi/asm-generic/siginfo.h b/include/uapi/asm-generic/siginfo.h
index 99c902e460c2..5528cdb0b54a 100644
--- a/include/uapi/asm-generic/siginfo.h
+++ b/include/uapi/asm-generic/siginfo.h
@@ -179,33 +179,16 @@ typedef struct siginfo {
  * SIGILL si_codes
  */
 #define ILL_ILLOPC	1	/* illegal opcode */
-#ifdef __bfin__
-# define ILL_ILLPARAOP	2	/* illegal opcode combine */
-#endif
 #define ILL_ILLOPN	2	/* illegal operand */
 #define ILL_ILLADR	3	/* illegal addressing mode */
 #define ILL_ILLTRP	4	/* illegal trap */
-#ifdef __bfin__
-# define ILL_ILLEXCPT	4	/* unrecoverable exception */
-#endif
 #define ILL_PRVOPC	5	/* privileged opcode */
 #define ILL_PRVREG	6	/* privileged register */
 #define ILL_COPROC	7	/* coprocessor error */
 #define ILL_BADSTK	8	/* internal stack error */
-#ifdef __bfin__
-# define ILL_CPLB_VI	9	/* D/I CPLB protect violation */
-# define ILL_CPLB_MISS	10	/* D/I CPLB miss */
-# define ILL_CPLB_MULHIT 11	/* D/I CPLB multiple hit */
-#endif
-#ifdef __tile__
-# define ILL_DBLFLT	9	/* double fault */
-# define ILL_HARDWALL	10	/* user networks hardwall violation */
-#endif
-#ifdef __ia64__
-# define ILL_BADIADDR	9	/* unimplemented instruction address */
-# define __ILL_BREAK	10	/* illegal break */
-# define __ILL_BNDMOD	11	/* bundle-update (modification) in progress */
-#endif
+#define ILL_BADIADDR	9	/* unimplemented instruction address */
+#define __ILL_BREAK	10	/* illegal break */
+#define __ILL_BNDMOD	11	/* bundle-update (modification) in progress */
 #define NSIGILL		11
 
 /*
@@ -219,16 +202,11 @@ typedef struct siginfo {
 #define FPE_FLTRES	6	/* floating point inexact result */
 #define FPE_FLTINV	7	/* floating point invalid operation */
 #define FPE_FLTSUB	8	/* subscript out of range */
-#ifdef __frv__
-# define FPE_MDAOVF	9	/* media overflow */
-#endif
-#ifdef __ia64__
-# define __FPE_DECOVF	9	/* decimal overflow */
-# define __FPE_DECDIV	10	/* decimal division by zero */
-# define __FPE_DECERR	11	/* packed decimal error */
-# define __FPE_INVASC	12	/* invalid ASCII digit */
-# define __FPE_INVDEC	13	/* invalid decimal digit */
-#endif
+#define __FPE_DECOVF	9	/* decimal overflow */
+#define __FPE_DECDIV	10	/* decimal division by zero */
+#define __FPE_DECERR	11	/* packed decimal error */
+#define __FPE_INVASC	12	/* invalid ASCII digit */
+#define __FPE_INVDEC	13	/* invalid decimal digit */
 #define NSIGFPE		13
 
 /*
@@ -236,11 +214,7 @@ typedef struct siginfo {
  */
 #define SEGV_MAPERR	1	/* address not mapped to object */
 #define SEGV_ACCERR	2	/* invalid permissions for mapped object */
-#ifdef __bfin__
-# define SEGV_STACKFLOW	3	/* stack overflow */
-#else
-# define SEGV_BNDERR	3	/* failed address bound checks */
-#endif
+#define SEGV_BNDERR	3	/* failed address bound checks */
 #ifdef __ia64__
 # define __SEGV_PSTKOVF	4	/* paragraph stack overflow */
 #else
@@ -254,12 +228,8 @@ typedef struct siginfo {
 #define BUS_ADRALN	1	/* invalid address alignment */
 #define BUS_ADRERR	2	/* non-existent physical address */
 #define BUS_OBJERR	3	/* object specific hardware error */
-#ifdef __bfin__
-# define BUS_OPFETCH	4	/* error from instruction fetch */
-#else
 /* hardware memory error consumed on a machine check: action required */
-# define BUS_MCEERR_AR	4
-#endif
+#define BUS_MCEERR_AR	4
 /* hardware memory error detected in process but not consumed: action optional*/
 #define BUS_MCEERR_AO	5
 #define NSIGBUS		5
@@ -271,12 +241,6 @@ typedef struct siginfo {
 #define TRAP_TRACE	2	/* process trace trap */
 #define TRAP_BRANCH     3	/* process taken branch trap */
 #define TRAP_HWBKPT     4	/* hardware breakpoint/watchpoint */
-#ifdef __bfin__
-# define TRAP_STEP	1	/* single-step breakpoint */
-# define TRAP_TRACEFLOW	2	/* trace buffer overflow */
-# define TRAP_WATCHPT	3	/* watchpoint match */
-# define TRAP_ILLTRAP	4	/* illegal trap */
-#endif
 #define NSIGTRAP	4
 
 /*