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* mtd,ubi,ubifs: sync with linux v3.15Heiko Schocher2014-08-25-68/+341
| | | | | | | | | | | | | | snyc with linux v3.15: commit 1860e379875dfe7271c649058aeddffe5afd9d0d Author: Linus Torvalds <torvalds@linux-foundation.org> Date: Sun Jun 8 11:19:54 2014 -0700 Linux 3.15 Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Scott Wood <scottwood@freescale.com> Cc: Tom Rini <trini@ti.com>
* mtd, ubi, ubifs: update for the sync with linux v3.14Heiko Schocher2014-08-25-0/+11
| | | | | | | | | | | | | while playing with the new mtd/ubi/ubifs sync, found some small updates for it: - add del_mtd_partition() to include/linux/mtd/mtd - mtd: add a debug_printf - remove some not used functions Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Scott Wood <scottwood@freescale.com> Cc: Tom Rini <trini@ti.com>
* mtd, ubi, ubifs: resync with Linux-3.14Heiko Schocher2014-08-25-6800/+26583
| | | | | | | | | | | | | | | | | | | | resync ubi subsystem with linux: commit 455c6fdbd219161bd09b1165f11699d6d73de11c Author: Linus Torvalds <torvalds@linux-foundation.org> Date: Sun Mar 30 20:40:15 2014 -0700 Linux 3.14 A nice side effect of this, is we introduce UBI Fastmap support to U-Boot. Signed-off-by: Heiko Schocher <hs@denx.de> Signed-off-by: Tom Rini <trini@ti.com> Cc: Marek Vasut <marex@denx.de> Cc: Sergey Lapin <slapin@ossfans.org> Cc: Scott Wood <scottwood@freescale.com> Cc: Joerg Krause <jkrause@posteo.de>
* lib, linux: move linux specific defines to linux/compat.hHeiko Schocher2014-08-25-235/+385
| | | | | | | | | | | | | | | | - move linux specific defines from usb and video code into linux/compat.h - move common linux specific defines from include/ubi_uboot.h to linux/compat.h - add for new mtd/ubi/ubifs sync new needed linux specific defines to linux/compat.h Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Marek Vasut <marex@denx.de> Cc: Anatolij Gustschin <agust@denx.de> [trini: Add spin_lock_irqsave/spin_unlock_irqrestore dummies from usb/lin_gadet_compat.h] Signed-off-by: Tom Rini <trini@ti.com>
* linux include: add ERR_CASTHeiko Schocher2014-08-25-4/+13
| | | | | | add missing ERR_CAST to linux/err.h as it is needed for ubi/ubifs support Signed-off-by: Heiko Schocher <hs@denx.de>
* lib, list_sort: add list_sort from linux 3.14Heiko Schocher2014-08-25-0/+310
| | | | | | | | | | | | | | | | | | | | | | | from linux 3.14: commit 455c6fdbd219161bd09b1165f11699d6d73de11c Author: Linus Torvalds <torvalds@linux-foundation.org> Date: Sun Mar 30 20:40:15 2014 -0700 Linux 3.14 Needed for the MTD/UBI/UBIFS resync Just copied the files from Linux, and added in the c-file the "#define __UBOOT__" for adding U-Boot special code. In this case we use this just for adding including U-Boot headers. Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Marek Vasut <marex@denx.de> Cc: Sergey Lapin <slapin@ossfans.org> Cc: Scott Wood <scottwood@freescale.com> Cc: Tom Rini <trini@ti.com>
* lib, rbtree: resync with Linux-3.14Heiko Schocher2014-08-25-353/+698
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | resync with linux: commit 455c6fdbd219161bd09b1165f11699d6d73de11c Author: Linus Torvalds <torvalds@linux-foundation.org> Date: Sun Mar 30 20:40:15 2014 -0700 Linux 3.14 Needed for the MTD/UBI/UBIFS resync Just copied the files from Linux, changed the license file header, and add in the c-file: +#define __UBOOT__ #include <linux/rbtree_augmented.h> +#ifndef __UBOOT__ #include <linux/export.h> +#else +#include <ubi_uboot.h> +#endif so, it compiles for U-Boot. Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Marek Vasut <marex@denx.de> Cc: Sergey Lapin <slapin@ossfans.org> Cc: Scott Wood <scottwood@freescale.com> Cc: Tom Rini <trini@ti.com>
* Merge branch 'agust@denx.de' of git://git.denx.de/u-boot-stagingTom Rini2014-08-25-5/+21
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| * openrd: fail build if U-Boot would overlap with environment in flashSascha Silbe2014-08-14-0/+5
| | | | | | | | | | | | | | | | Set CONFIG_BOARD_SIZE_LIMIT so we'll notice at build time if U-Boot has grown so large that it would overlap with the environment area in flash, rather than bricking the device at run-time on first saveenv. Signed-off-by: Sascha Silbe <t-uboot@infra-silbe.de>
| * README: document CONFIG_BOARD_SIZE_LIMITSascha Silbe2014-08-14-0/+5
| | | | | | | | | | | | | | | | CONFIG_BOARD_SIZE_LIMIT was introduced by f3a14d37 [Makefile: allow boards to check file size limits] and is in use by several boards, but never got documented. Signed-off-by: Sascha Silbe <t-uboot@infra-silbe.de>
| * mtdparts: fix usecount bugHeiko Schocher2014-08-14-0/+1
| | | | | | | | | | | | | | | | | | add missing put_mtd_device, so mtd->usecount gets correct decremented in get_mtd_info(). Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Scott Wood <scottwood@freescale.com> Cc: Tom Rini <trini@ti.com>
| * RTC: add support for DS1339 (using DS1307 driver)Markus Niebel2014-08-14-1/+3
| | | | | | | | Signed-off-by: Markus Niebel <Markus.Niebel@tq-group.com>
| * driver/qe: update status of QE microcodevijay rai2014-08-14-1/+1
| | | | | | | | | | | | This Patch updates error print for QE which should be easily understood Signed-off-by: Vijay Rai <vijay.rai@freescale.com>
| * mkimage: fix compilation issues on OpenBSDLuka Perkov2014-08-14-0/+2
| | | | | | | | Signed-off-by: Luka Perkov <luka@openwrt.org>
| * pci: fix overflow in __pci_hose_bus_to_phys w/ large RAMStephen Warren2014-08-14-1/+1
| | | | | | | | | | | | | | | | | | | | | | If a 32-bit system has 2GB of RAM, and the base address of that RAM is 2GB, then start+size will overflow a 32-bit value (to a value of 0). To avoid such an overflow, convert __pci_hose_bus_to_phys() to calculate the offset of a bus address into a PCI region, rather than comparing a bus address against the end of a PCI region. Signed-off-by: Stephen Warren <swarren@nvidia.com>
| * tools, fit_info: increase buffer for command nameHeiko Schocher2014-08-14-2/+3
| | | | | | | | | | | | | | | | | | | | currently the buffer for command name is 50 bytes only. If using fit_info with long absolute paths, this is not enough, so raise it to 256 (as it is in fit_check_sign) Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
| * tools: fix typo in tools/image-host.cHeiko Schocher2014-08-14-1/+1
| | | | | | | | | | | | | | | | | | fix a typo in error printf. If FIT_CONFS_PATH is not found print FIT_CONFS_PATH not FIT_IMAGES_PATH. Signed-off-by: Heiko Schocher <hs@denx.de> Cc: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
* | nios2: remove EPCS driverThomas Chou2014-08-24-778/+1
| | | | | | | | | | | | | | The Altera EPCS is SPI flash. We have been using SPI flash driver to access EPCS for years. The old EPCS driver could be removed. Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
* | nios2: add generic board supportThomas Chou2014-08-24-166/+55
| | | | | | | | | | | | | | | | | | This patch implements the generic board init as described in doc/README.generic-board. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Signed-off-by: Scott McNutt <smcnutt@psyent.com> Reviewed-by: Stefan Roese <sr@denx.de>
* | nios2: remove obsolete PCI5441 and PK1C20 boardsThomas Chou2014-08-24-749/+0
| | | | | | | | Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
* | nios2: Fix printf size_t format related warnings (again...)Vasili Galka2014-08-24-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When compiling the current code on GCC 4.8.3, the following warnings appear: warning: format '%zu' expects argument of type 'size_t', but argument 2 has type 'long unsigned int' [-Wformat=] There were many mails about such warnings on different architectures. This patch limits itself to the nios2 architecture. The problem is that for the size_t (%zu, %zd, ...) arguments of printf GCC does not verify the type match to size_t type. It verifies the type match to the compiler-defined __SIZE_TYPE__ type. Thus, if size_t is defined different from __SIZE_TYPE__ - warnings inevitably appear. There is a comment by Thomas Chou to the (rejected) patch: http://patchwork.ozlabs.org/patch/272102/ which explains that the older GCC toolchains (gcc-3.4.6 and gcc-4.1.2) expect size_t to be "unsigned long" and the newer expect it to be "unsigned int". Thus, no matter how we define size_t - either way warnings appear when using some GCC version. By rejecting that patch, a choice was made to prefer older GCC versions and leave the warnings when building with the newer toolchains. Personally, I disagree with this choice... In any case, this patch proposes a way to fix the warnings for any GCC version. Just define size_t using the __SIZE_TYPE__ compiler-defined type and the type verification will pass. I tested that this fixes the warning on GCC 4.8.3. I don't have an older toolchain to test with, but __SIZE_TYPE__ was definitely defined in GCC 3.4.6, so it should work there too. Signed-off-by: Vasili Galka <vvv444@gmail.com> Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
* | buildman: refactor help messageMasahiro Yamada2014-08-22-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | "buildman [options]" is displayed by default. Append the rest of help messages to parser.usage instead of replacing it. Besides, "-b <branch>" is not mandatory since commit fea5858e. Drop it from the usage. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* | git-mailrc: add patman and buildman aliasMasahiro Yamada2014-08-22-0/+2
| | | | | | | | | | | | | | It's easier to Cc Simon on patches related to Patman or Buildman. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Simon Glass <sjg@chromium.org>
* | patman: refactor help messageMasahiro Yamada2014-08-22-1/+1
| | | | | | | | | | | | | | | | | | "patman [options]" is displayed by default. Append the rest of help messages to parser.usage instead of replacing it. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* | kconfig: convert Kconfig helper script into a shell scriptMasahiro Yamada2014-08-22-407/+262
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 51148790 added scripts/multiconfig.py written in Python 2 to adjust Kconfig for U-Boot. It has been hard for Python 3 users because Python 2 and Python 3 are not compatible with each other. We are not happy about adding a new host tool dependency (in this case, Python version dependency) for the core build process. After some discussion, we decided to use only basic tools. The script may get a bit more unreadable by shell scripting, but we believe it is worthwhile. In addition, this commit revives "<board>_config" target that is equivalent to "<board>_defconfig" for backwards compatibility. It is annoying to adjust various projects which use U-Boot. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Suggested-by: Igor Grinberg <grinberg@compulab.co.il> Tested-by: Igor Grinberg <grinberg@compulab.co.il> Acked-by: Simon Glass <sjg@chromium.org> Cc: Tom Rini <trini@ti.com> Cc: Jeroen Hofstee <jeroen@myspectrum.nl> Cc: Stephen Warren <swarren@nvidia.com>
* | Makefile: remove generated boards.cfg within make distcleanRoger Meier2014-08-22-5/+6
| | | | | | | | | | | | | | | | | | Signed-off-by: Roger Meier <roger@bufferoverflow.ch> Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Tested-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Tom Rini <trini@ti.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Simon Glass <sjg@chromium.org>
* | net: More BOOTP retry timeout improvementsThierry Reding2014-08-21-8/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's not unusual for DHCP servers to take a couple hundred milliseconds to respond to DHCP discover messages. One possible reason for the delay can be that the server checks (typically using an ARP request) that the IP it's about to hand out isn't in use yet. To make matters worse, some servers may also queue up requests and process them sequentially, which can cause excessively long delays if clients retry too fast. Commit f59be6e850b3 ("net: BOOTP retry timeout improvements") shortened the retry timeouts significantly, but the BOOTP/DHCP implementation in U-Boot doesn't handle that well because it will ignore incoming replies to earlier requests. In one particular setup this increases the time it takes to obtain a DHCP lease from 630 ms to 8313 ms. This commit attempts to fix this in two ways. First it increases the initial retry timeout from 10 ms to 250 ms to give DHCP servers some more time to respond. At the same time a cache of outstanding DHCP request IDs is kept so that the implementation will know to continue transactions even after a retransmission of the DISCOVER message. The maximum retry timeout is also increased from 1 second to 2 seconds. An ID cache of size 4 will keep DHCP requests around for 8 seconds (once the maximum retry timeout has been reached) before dropping them. This should give servers plenty of time to respond. If it ever turns out that this isn't enough, the size of the cache can easily be increased. With this commit the DHCP lease on the above-mentioned setup still takes longer (1230 ms) than originally, but that's an acceptable compromise to improve DHCP lease acquisition time for a broader range of setups. To make it easier to benchmark DHCP in the future, this commit also adds the time it took to obtain a lease to the final "DHCP client bound to address x.x.x.x" message. Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
* | bootm: make sure pass NULL when argc < 1Bryan Wu2014-08-21-2/+3
| | | | | | | | | | | | arg[0] might not be NULL even if argc < 1, so fix this as before. Signed-off-by: Bryan Wu <pengw@nvidia.com>
* | image: fix bootm failure for FIT imageBryan Wu2014-08-21-18/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | Commit b3dd64f5d537 "bootm: use genimg_get_kernel_addr()" introduced a bug for booting FIT image. It's because calling fit_parse_config() twice will give us wrong value in img_addr. Add a new function genimg_get_kernel_addr_fit() whichl will always return fit_uname_config and fit_uname_kernel for CONFIG_FIT. genimg_get_kernel_addr() will ignore those to parameters. Reported-by: York Sun <yorksun@freescale.com> Signed-off-by: Bryan Wu <pengw@nvidia.com>
* | kconfig: remove DEFCONFIG_LISTMasahiro Yamada2014-08-21-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | CONFIG_DEFCONFIG_LIST specifies the default defconfig. It is used by "make savedefconfig" when .config is missing. But that's it. I could not find other useful cases. As a side effect, CONFIG_DEFCONFIG_LIST="configs/sandbox_defconfig" is contained in .config of every target board, which some people think is odd. So, let's remove it. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Michal Simek <michal.simek@xilinx.com> Acked-by: Michal Simek <michal.simek@xilinx.com>
* | scripts/Lindent: import from Linux 3.16Masahiro Yamada2014-08-21-0/+18
| | | | | | | | Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* | Makefile: Use Kbuild style for system_map.o generation stepVasili Galka2014-08-21-3/+7
| | | | | | | | | | | | | | | | | | The command generating the "common/system_map.o" file was always shown during the build making the output messy. Now it is called using the Kbuild "cmd" macro, so that the full command is shown only when building in verbose mode. Signed-off-by: Vasili Galka <vvv444@gmail.com>
* | add header for Android sparse image formatColin Cross2014-08-21-0/+49
| | | | | | | | | | | | | | | | | | | | Add a BSD-3 relicensed version of the Android sparse format image header from: https://android.googlesource.com/platform/system/core/+/28fa5bc347390480fe190294c6c385b6a9f0d68b/libsparse/sparse_format.h Unchanged except for the license header. Cc: Tom Rini <trini@ti.com> Signed-off-by: Colin Cross <ccross@android.com>
* | api: fix build without CMD_NET supportJeroen Hofstee2014-08-21-0/+30
| | | | | | | | | | | | Provide stubs in case that no NET interface is supported. Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
* | e1000: add i210 supportMarek Vasut2014-08-21-27/+187
| | | | | | | | | | | | | | Add i210 support to the e1000 driver. Signed-off-by: Marek Vasut <marex@denx.de> Acked-by: Tim Harvey <tharvey@gateworks.com>
* | e1000: Implement dcache supportMarek Vasut2014-08-21-22/+49
| | | | | | | | | | | | | | | | Implement proper support for cache flushing and invalidation into the Intel e1000 NIC driver. Signed-off-by: Marek Vasut <marex@denx.de> Acked-by: Tim Harvey <tharvey@gateworks.com>
* | tools/genboardscfg.py: no exception if columns undetectableRoger Meier2014-08-21-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | The existing terminalsize detection raised an exception on build server. Just removes the exception. This also deactivates the progress indicator. Remove a trainling whitespace. Signed-off-by: Roger Meier <roger@bufferoverflow.ch> CC: Masahiro Yamada <yamada.m@jp.panasonic.com> CC: Tom Rini <trini@ti.com>
* | tools/genboardscfg.py: Do not output SPLCPU fieldMasahiro Yamada2014-08-21-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Prior to Kconfig, the CPU field of boards.cfg could optionally have ":SPLCPU", like "armv7:arm720t". (Actually this syntax was only used for Tegra platform.) Now it is not necessary at all because CPU is defined by CONFIG_SYS_CPU in Kconfig. For Tegra platform, the Kconfig option is described as follows: config SYS_CPU string default "arm720t" if SPL_BUILD default "armv7" if !SPL_BUILD Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* | pxe: Allow use of environment variables in append stringHans de Goede2014-08-21-16/+13
| | | | | | | | | | | | | | Use cli_simple_process_macros, so that environment variables (e.g. ${console}) can be used in append strings. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* | cli: Export cli_simple_process_macros for use outside of cli_simpleHans de Goede2014-08-21-2/+10
| | | | | | | | Signed-off-by: Hans de Goede <hdegoede@redhat.com>
* | davinci: orphan some Davinci boardsMasahiro Yamada2014-08-21-4/+4
| | | | | | | | | | | | | | | | | | | | | | Emails to Sandeep Paulraj <s-paulraj@ti.com> have been bouncing. Please assign new maintainer(s) to get these boards back to Maintained. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Tom Rini <trini@ti.com>
* | powerpc: mpc8xx: remove FLAGADM board supportMasahiro Yamada2014-08-21-1373/+1
| | | | | | | | | | | | This board has been orphaned for a while and old enough. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* | powerpc: mpc8xx: remove GEN860T, GEN806T_SC board supportMasahiro Yamada2014-08-21-2951/+1
| | | | | | | | | | | | These boards have been orphaned for a while and old enough. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* | powerpc: mpc8xx: remove SXNI855T board supportMasahiro Yamada2014-08-21-3594/+2
| | | | | | | | | | | | This board has been orphaned for a while and old enough. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* | powerpc: mpc8xx: remove svm_sc8xx boardMasahiro Yamada2014-08-21-1579/+4
| | | | | | | | | | | | This board has been orphaned for a while and old enough. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* | powerpc: mpc8xx: remove stxxtc board supportMasahiro Yamada2014-08-21-1383/+2
| | | | | | | | | | | | This board has been orphaned for a while and old enough. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* | omap: remove omap5912osk board supportMasahiro Yamada2014-08-21-3295/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Emails to the board maintainer "Rishi Bhattacharya <rishi@ti.com>" have been bouncing. Tom suggested to remove this board. Remove also omap1510_udc.c because this is the last board to enable it. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Suggested-by: Tom Rini <trini@ti.com>
* | scripts: objdiff: sync with Linux 3.16Masahiro Yamada2014-08-21-28/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Import scripts/objdiff improvements from Linux v3.16, which consists of 7 commits written by me. commit 7fa0e6db3cedc9b70d68a4170f1352e2b1aa0f90 scripts: objdiff: support directories for the augument of record command commit 8ac28bee76eec006aac5ba5c418878a607d53a9b scripts: objdiff: fix a comment commit 8b5d0f20d64f00ffd5685879f8eb3659379f5aaa scripts: objdiff: change the extension of disassembly from .o to .dis commit 18165efa8203a34d82f60a1831ea290e7304c654 scripts: objdiff: improve path flexibility for record command commit 1ecc8e489abfdaa6d8d1689f7ff62fdf1adda30c scripts: objdiff: remove unnecessary code commit 5ab370e91af70d5f1b1dbaec78798a2ff236a2d5 scripts: objdiff: direct error messages to stderr commit fd6e12423311697860f30d10398a0f9eb91977d2 scripts: objdiff: get the path to .tmp_objdiff more simply Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* | kbuild: sync mixed targets handling with Linux 3.16Masahiro Yamada2014-08-21-14/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "make %_config all" was supported for the first time in U-Boot: commit 53bca5ab kbuild: support simultaneous board configuration and "make all" Surprisingly it had not been working in Linux Kernel for a long time. So I sent back the patch to the Linux Kbuild community and it was accepted with a little code improvement, at commit 9319f453. Now, you can do "make defconfig all" or "make %_defconfig all" in Linux too. This commit updates some scripts to fill the code-diff between Linux and U-Boot. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* | kbuild: move extra gcc checks to scripts/Makefile.extrawarnMasahiro Yamada2014-08-21-65/+69
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit was imported from Linux Kernel: commit a86fe353 written by me. W=... provides extra gcc checks. Having such code in scripts/Makefile.build results in the same flags being added to KBUILD_CFLAGS multiple times becuase scripts/Makefile.build is invoked every time Kbuild descends into the subdirectories. Since the top Makefile is already too cluttered, this commit moves all of extra gcc check stuff to a new file scripts/Makefile.extrawarn, which is included from the top Makefile. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
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