linux-kernel - [PATCH v9 0/9] arm: Fix DEBUG_LL for multi-platform kernels (without PL01X)

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Message-Id: <1408461407-10429-1-git-send-email-daniel.thompson@linaro.org>
Date:	Tue, 19 Aug 2014 16:16:38 +0100
From:	Daniel Thompson <daniel.thompson@...aro.org>
To:	Russell King <linux@....linux.org.uk>
Cc:	Daniel Thompson <daniel.thompson@...aro.org>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	spear-devel@...t.st.com, Arnd Bergmann <arnd@...db.de>,
	Paul Bolle <pebolle@...cali.nl>, patches@...aro.org,
	linaro-kernel@...ts.linaro.org
Subject: [PATCH v9 0/9] arm: Fix DEBUG_LL for multi-platform kernels (without PL01X)

This patchset removes some single-platform compatibility tricks related
to DEBUG_LL and, as a result, allows multi_v7_defconfig derived builds
to enable DEBUG_LL. Currently the user selected kbuild setting is
ignored and the PL01X's DEBUG_LL stub is silently selected instead. This
is a pain if your hardware doesn't have this cell, not least because it
takes a little time to figure out that kbuild built the wrong code.

Warning:

    silentoldconfig on PL011 single platforms will result in DEBUG_LL
    being directed at ICEDCC rather than PL011. This should only
    affect silentoldconfig since oldconfig prompts and the defconfigs have
    been updated to avoid this problem.

Changes since v8:
- Regenerated patch series with --find-renames to properly track code
  movement.

Changes since v7:
- Killed DEBUG_LL_UART_NONE completely and migrated over the four remaining
  platforms that relied on this (Arnd Bergmann, Russell King). This
  fixes some problems with oldconfig builds.
- Rebased on latest mainline (v3.17rc1).

Changes since v6:
- Removed a patch to limit DEBUG_LL_UART_NONE to platforms that support
  it because it almost time to drop DEBUG_LL_UART_NONE anyway (only
  four platforms still use it).
- Rebased on latest mainline (v3.16rc3).

Changes since v5:

- Shortened the list of platforms that can select DEBUG_LL_UART_NONE
  (changes Arnd Bergmann)
- Rebased on latest mainline (v3.15rc7).

Changes since v4:

- Rebased to latest mainline (and tested again). No functional changes.

Changes since v3:

- Converted from a single patch to a series.
- Tested defconfig builds of all impacted platforms.

Changes since v2:

- Switch from def_bool to bool (thanks Russell King)

Changes since v1:

- Remove pointless single platform support (thanks Arnd Bergmann)

Daniel Thompson (9):
  arm: versatile: Enable DEBUG_LL_UART_PL01X
  arm: ep93xx: Enable DEBUG_LL_UART_PL01X
  arm: Remove DEBUG_LL_UART_NONE
  arm: ks8695: Migrate debug_ll macros to shared directory
  arm: omap1: Migrate debug_ll macros to use 8250.S
  arm: netx: Migrate DEBUG_LL macros to shared directory
  arm: sa1100: Migrate DEBUG_LL macros to shared directory
  arm: Seperate DEBUG_UART_PHYS from DEBUG_LL on EP93XX
  arm: Fix DEBUG_LL for multi-platform kernels (without PL01X)

 arch/arm/Kconfig.debug                             | 138 ++++++++++++++++++---
 arch/arm/configs/ep93xx_defconfig                  |   1 +
 arch/arm/configs/versatile_defconfig               |   1 +
 .../mach/debug-macro.S => include/debug/ks8695.S}  |  10 +-
 .../mach/debug-macro.S => include/debug/netx.S}    |  22 ++--
 arch/arm/include/debug/sa1100.S                    |  37 ++++++
 arch/arm/mach-omap1/include/mach/debug-macro.S     | 101 ---------------
 arch/arm/mach-sa1100/include/mach/debug-macro.S    |  62 ---------
 8 files changed, 175 insertions(+), 197 deletions(-)
 rename arch/arm/{mach-ks8695/include/mach/debug-macro.S => include/debug/ks8695.S} (80%)
 rename arch/arm/{mach-netx/include/mach/debug-macro.S => include/debug/netx.S} (62%)
 create mode 100644 arch/arm/include/debug/sa1100.S
 delete mode 100644 arch/arm/mach-omap1/include/mach/debug-macro.S
 delete mode 100644 arch/arm/mach-sa1100/include/mach/debug-macro.S

--
1.9.3

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