Re: [PATCH v2 00/25] make *struct of_device_id.data const

2012-08-05 Thread Uwe Kleine-König
Hello,

 this is the 2nd version of this series whose goal is to make struct
 of_device_id.data const. Conceptually a driver must not modify the data
 contained there so making it const is the right thing.

I rebased my branch at:

git://git.pengutronix.de/git/ukl/linux.git ofdeviceiddata

on top of v3.6-rc1 and retested the arm and powerpc defconfigs and a
powerpc allyesconfig. The result is still the same, i.e. a new warning
in drivers/regulator/twl-regulator.c because the probe routine modifies
the of_match table.

The series was contained in next up to next-20120725 (as commit

100e8f5 (Merge branch 'ofdeviceiddata' of 
git://git.pengutronix.de/git/ukl/linux into late/warnings)

with an encoding error in the commit log btw). Don't know why it was
dropped from next. (late/warnings didn't show up in next-20120725's
arch/arm/arm-soc-for-next-contents.txt, maybe that's the reason?)

Compared to v2 of the series this drops two patches that made it in
during the v3.6 merge window.

The following changes since commit 0d7614f09c1ebdbaa1599a5aba7593f147bf96ee:

  Linux 3.6-rc1 (2012-08-02 16:38:10 -0700)

are available in the git repository at:

  git://git.pengutronix.de/git/ukl/linux.git ofdeviceiddata

for you to fetch changes up to e22bd8177efeec9463dc2fc40bd172c717d0bd07:

  can: mpc5xxx_can: make data used as *of_device_id.data const (2012-08-03 
13:58:41 +0200)


Arnd Bergmann (6):
  watchdog/mpc8xxx: add a const qualifier
  powerpc/fsl_msi: drop unneeded cast to non-const pointer
  mfd/da9052: make i2c_device_id array const
  i2c/mpc: make data used as *of_device_id.data const
  macintosh/mediabay: make data used as *of_device_id.data const
  can: mpc5xxx_can: make data used as *of_device_id.data const

Uwe Kleine-König (17):
  spi/imx: make spi_imx_data.devtype_data member point to const data
  spi/spi-omap2-mcspi: add a const qualifier
  serial/imx: make imx_port.devdata member point to const data
  serial/mpc52xx_uart: add a const qualifier
  ARM: cache-l2x0: add a const qualifier
  misc/atmel_tc: make atmel_tc.tcb_config member point to const data
  gpio/gpio-omap.c: add a const qualifier
  gpio/mpc8xxx: add a const qualifier
  i2c/i2c-omap: add a const qualifier
  i2c/mpc: add a const qualifier
  mmc/omap_hsmmc: add a const qualifier
  macintosh/mediabay: add a const qualifier
  powerpc/83xx: add a const qualifier
  powerpc/fsl_msi: add a const qualifier
  powerpc/celleb_pci: add a const qualifier
  of: add const to struct *of_device_id.data
  gpio/gpio-omap: make platformdata used as *of_device_id.data const

 arch/arm/mm/cache-l2x0.c |2 +-
 arch/powerpc/platforms/83xx/suspend.c|2 +-
 arch/powerpc/platforms/cell/celleb_pci.c |2 +-
 arch/powerpc/sysdev/fsl_msi.c|8 
 drivers/gpio/gpio-mpc8xxx.c  |2 +-
 drivers/gpio/gpio-omap.c |8 
 drivers/i2c/busses/i2c-mpc.c |   12 ++--
 drivers/i2c/busses/i2c-omap.c|3 ++-
 drivers/macintosh/mediabay.c |8 
 drivers/mfd/da9052-i2c.c |4 ++--
 drivers/mmc/host/omap_hsmmc.c|2 +-
 drivers/net/can/mscan/mpc5xxx_can.c  |4 ++--
 drivers/spi/spi-imx.c|2 +-
 drivers/spi/spi-omap2-mcspi.c|2 +-
 drivers/tty/serial/imx.c |2 +-
 drivers/tty/serial/mpc52xx_uart.c|2 +-
 drivers/watchdog/mpc8xxx_wdt.c   |2 +-
 include/linux/atmel_tc.h |2 +-
 include/linux/mod_devicetable.h  |2 +-
 19 files changed, 36 insertions(+), 35 deletions(-)


-- 
Pengutronix e.K.   | Uwe Kleine-König|
Industrial Linux Solutions | http://www.pengutronix.de/  |

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Re: [PATCH v2 00/25] make *struct of_device_id.data const

2012-07-24 Thread Arnd Bergmann
On Monday 23 July 2012, Uwe Kleine-König wrote:
 this is the 2nd version of this series whose goal is to make struct
 of_device_id.data const. Conceptually a driver must not modify the data
 contained there so making it const is the right thing.
 
 v1 of this series was sent with Message-id:
 1342182734-321-1-git-send-email-y. Changes since then are:
  - powerpc fixes
  - several new consts that were found by Arnd that are possible after
patch 19.

 Arnd suggested to take this series via arm-soc late for 3.6 in one go
 because patch 19 depends on the former patches but is a precondition to
 the latter and it fixes a few warnings. So getting it in via the
 respective maintainer trees would need a much bigger coordination
 effort. That means I prefer getting Acks over you taking the patch.
 
 Vinod Koul already took
 dmaengine: at_hdmac: add a few const qualifiers
 that is in next-20120723 as 7fd63ccdad72 now. Vinod, I don't follow your
 pull requests, but assuming you didn't let it already pull for 3.6 I
 suggest you drop it from your queue and I just take your Ack.
 
 This series was build tested for arm (all defconfigs) and powerpc (all
 defconfigs and an allyesconfig) and grep didn't find more issues. As
 before it introduces a warning in drivers/regulator/twl-regulator.c.
 This driver does modify its .of_match_table when a device is bound which
 doesn't fits the concept of independant devices. Arnd noticed another
 new warning in drivers/scsi/qlogicpti.c that isn't that easy to resolve,
 because the pointer to (now) const data is passed as first argument to
 scsi_host_alloc. To fix that properly struct Scsi_Host.hostt needs to
 get a const, too. Alternatively I could introduce a cast removing the
 const, but I don't like that.
 
 This series is also available at:
 
 git://git.pengutronix.de/git/ukl/linux.git ofdeviceiddata
 
 and I will modify it there for the Acks I'm getting.

Pulled the entire series into arm-soc/late/warnings. Thanks everyone
who provided Acks. I'll wait for a few more days to let this sit
in linux-next and if nobody complains, Olof or I will forward it
to Linus.

Arnd

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