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   - unicore32 and hexagon both have very outdated gcc releases, but the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, 122 deletions

diff --git a/arch/tile/include/hv/netio_errors.h b/arch/tile/include/hv/netio_errors.h
deleted file mode 100644
index e1591bff61b5..000000000000
--- a/arch/tile/include/hv/netio_errors.h
+++ /dev/null
@@ -1,122 +0,0 @@
-/*
- * Copyright 2010 Tilera Corporation. All Rights Reserved.
- *
- *   This program is free software; you can redistribute it and/or
- *   modify it under the terms of the GNU General Public License
- *   as published by the Free Software Foundation, version 2.
- *
- *   This program is distributed in the hope that it will be useful, but
- *   WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- *   NON INFRINGEMENT.  See the GNU General Public License for
- *   more details.
- */
-
-/**
- * Error codes returned from NetIO routines.
- */
-
-#ifndef __NETIO_ERRORS_H__
-#define __NETIO_ERRORS_H__
-
-/**
- * @addtogroup error
- *
- * @brief The error codes returned by NetIO functions.
- *
- * NetIO functions return 0 (defined as ::NETIO_NO_ERROR) on success, and
- * a negative value if an error occurs.
- *
- * In cases where a NetIO function failed due to a error reported by
- * system libraries, the error code will be the negation of the
- * system errno at the time of failure.  The @ref netio_strerror()
- * function will deliver error strings for both NetIO and system error
- * codes.
- *
- * @{
- */
-
-/** The set of all NetIO errors. */
-typedef enum
-{
-  /** Operation successfully completed. */
-  NETIO_NO_ERROR        = 0,
-
-  /** A packet was successfully retrieved from an input queue. */
-  NETIO_PKT             = 0,
-
-  /** Largest NetIO error number. */
-  NETIO_ERR_MAX         = -701,
-
-  /** The tile is not registered with the IPP. */
-  NETIO_NOT_REGISTERED  = -701,
-
-  /** No packet was available to retrieve from the input queue. */
-  NETIO_NOPKT           = -702,
-
-  /** The requested function is not implemented. */
-  NETIO_NOT_IMPLEMENTED = -703,
-
-  /** On a registration operation, the target queue already has the maximum
-   *  number of tiles registered for it, and no more may be added.  On a
-   *  packet send operation, the output queue is full and nothing more can
-   *  be queued until some of the queued packets are actually transmitted. */
-  NETIO_QUEUE_FULL      = -704,
-
-  /** The calling process or thread is not bound to exactly one CPU. */
-  NETIO_BAD_AFFINITY    = -705,
-
-  /** Cannot allocate memory on requested controllers. */
-  NETIO_CANNOT_HOME     = -706,
-
-  /** On a registration operation, the IPP specified is not configured
-   *  to support the options requested; for instance, the application
-   *  wants a specific type of tagged headers which the configured IPP
-   *  doesn't support.  Or, the supplied configuration information is
-   *  not self-consistent, or is out of range; for instance, specifying
-   *  both NETIO_RECV and NETIO_NO_RECV, or asking for more than
-   *  NETIO_MAX_SEND_BUFFERS to be preallocated.  On a VLAN or bucket
-   *  configure operation, the number of items, or the base item, was
-   *  out of range.
-   */
-  NETIO_BAD_CONFIG      = -707,
-
-  /** Too many tiles have registered to transmit packets. */
-  NETIO_TOOMANY_XMIT    = -708,
-
-  /** Packet transmission was attempted on a queue which was registered
-      with transmit disabled. */
-  NETIO_UNREG_XMIT      = -709,
-
-  /** This tile is already registered with the IPP. */
-  NETIO_ALREADY_REGISTERED = -710,
-
-  /** The Ethernet link is down. The application should try again later. */
-  NETIO_LINK_DOWN       = -711,
-
-  /** An invalid memory buffer has been specified.  This may be an unmapped
-   * virtual address, or one which does not meet alignment requirements.
-   * For netio_input_register(), this error may be returned when multiple
-   * processes specify different memory regions to be used for NetIO
-   * buffers.  That can happen if these processes specify explicit memory
-   * regions with the ::NETIO_FIXED_BUFFER_VA flag, or if tmc_cmem_init()
-   * has not been called by a common ancestor of the processes.
-   */
-  NETIO_FAULT           = -712,
-
-  /** Cannot combine user-managed shared memory and cache coherence. */
-  NETIO_BAD_CACHE_CONFIG = -713,
-
-  /** Smallest NetIO error number. */
-  NETIO_ERR_MIN         = -713,
-
-#ifndef __DOXYGEN__
-  /** Used internally to mean that no response is needed; never returned to
-   *  an application. */
-  NETIO_NO_RESPONSE     = 1
-#endif
-} netio_error_t;
-
-/** @} */
-
-#endif /* __NETIO_ERRORS_H__ */