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2011-09-11mtd: document ABIBrian Norris
We're missing a lot of important documentation in include/mtd/mtd-abi.h: * add a simple description of each ioctl (feel free to expand!) * give full explanations of recently added and modified operations * explain the usage of "RAW" that appear in different modes and types of operations * fix some comment style along the way Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-09-11mtd: add MEMWRITE ioctlBrian Norris
Implement a new ioctl for writing both page data and OOB to flash at the same time. This ioctl is intended to be a generic interface that can replace other ioctls (MEMWRITEOOB and MEMWRITEOOB64) and cover the functionality of several other old ones, e.g., MEMWRITE can: * write autoplaced OOB instead of using ECCGETLAYOUT (deprecated) and working around the reserved areas * write raw (no ECC) OOB instead of using MTDFILEMODE to set the per-file-descriptor MTD_FILE_MODE_RAW * write raw (no ECC) data instead of using MTDFILEMODE (MTD_FILE_MODE_RAW) and using standard character device "write" This ioctl is especially useful for MLC NAND, which cannot be written twice (i.e., we cannot successfully write the page data and OOB in two separate operations). Instead, MEMWRITE can write both in a single operation. Note that this ioctl is not affected by the MTD file mode (i.e., MTD_FILE_MODE_RAW vs. MTD_FILE_MODE_NORMAL), since it receives its write mode as an input parameter. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-09-11mtd: rename MTD_MODE_* to MTD_FILE_MODE_*Brian Norris
These modes hold their state only for the life of their file descriptor, and they overlap functionality with the MTD_OPS_* modes. Particularly, MTD_MODE_RAW and MTD_OPS_RAW cover the same function: to provide raw (i.e., without ECC) access to the flash. In fact, although it may not be clear, MTD_MODE_RAW implied that operations should enable the MTD_OPS_RAW mode. Thus, we should be specific on what each mode means. This is a start, where MTD_FILE_MODE_* actually represents a "file mode," not necessarily a true global MTD mode. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-09-11mtd: rename MTD_OOB_* to MTD_OPS_*Brian Norris
These modes are not necessarily for OOB only. Particularly, MTD_OOB_RAW affected operations on in-band page data as well. To clarify these options and to emphasize that their effect is applied per-operation, we change the primary prefix to MTD_OPS_. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-09-11mtd: move mtd_oob_mode_t to shared kernel/user spaceBrian Norris
We will want to use the MTD_OOB_{PLACE,AUTO,RAW} modes in user-space applications through the introduction of new ioctls, so we should make this enum a shared type. This enum is now anonymous. Artem: tweaked the patch. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-09-11mtd: support reading OOB without ECCBrian Norris
This fixes issues with `nanddump -n' and the MEMREADOOB[64] ioctls on hardware that performs error correction when reading only OOB data. A driver for such hardware needs to know when we're doing a RAW vs. a normal write, but mtd_do_read_oob does not pass such information to the lower layers (e.g., NAND). We should pass MTD_OOB_RAW or MTD_OOB_PLACE based on the MTD file mode. For now, most drivers can get away with just setting: chip->ecc.read_oob_raw = chip->ecc.read_oob This is done by default; but for systems that behave as described above, you must supply your own replacement function. This was tested with nandsim as well as on actual SLC NAND. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Cc: Jim Quinlan <jim2101024@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-09-11mtd: nand: document nand_chip.oob_poiBrian Norris
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-09-11mtd: support writing OOB without ECCBrian Norris
This fixes issues with `nandwrite -n -o' and the MEMWRITEOOB[64] ioctls on hardware that writes ECC when writing OOB. The problem arises as follows: `nandwrite -n' can write page data to flash without applying ECC, but when used with the `-o' option, ECC is applied (incorrectly), contrary to the `--noecc' option. I found that this is the case because my hardware computes and writes ECC data to flash upon either OOB write or page write. Thus, to support a proper "no ECC" write, my driver must know when we're performing a raw OOB write vs. a normal ECC OOB write. However, MTD does not pass any raw mode information to the write_oob functions. This patch addresses the problems by: 1) Passing MTD_OOB_RAW down to lower layers, instead of just defaulting to MTD_OOB_PLACE 2) Handling MTD_OOB_RAW within the NAND layer's `nand_do_write_oob' 3) Adding a new (replaceable) function pointer in struct ecc_ctrl; this function should support writing OOB without ECC data. Current hardware often can use the same OOB write function when writing either with or without ECC This was tested with nandsim as well as on actual SLC NAND. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Cc: Jim Quinlan <jim2101024@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-09-11mtd: style fixups in multi-line comment, indentationBrian Norris
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-09-11mtd: nand: fix spelling error (date => data)Brian Norris
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-09-11mtd: remove MEMSETOOBSEL macro definitionBrian Norris
MEMSETOOBSEL is completely unused and useless. Remove the definition. Note: it's probably best not to use this ioctl number in the future for MTD, since that may cause conflicts between old kernels and new user software (or new kernels and old user software). Artem: leave a comment about MEMSETOOBSEL. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-09-11mtd: remove CONFIG_MTD_DEBUGBrian Norris
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-09-11mtd: plat-nand: Fixup kerneldoc for struct platform_nand_chipTobias Klauser
The set_parts and priv members of struct platform_nand_chip where removed in commit c36a6ef3845262ade529afb9f458738b1f196f83 but the kerneldoc wasn't updated. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
2011-09-11mtd: spelling, capitalization, uniformityBrian Norris
Therefor -> Therefore [Intern], [Internal] -> [INTERN] [REPLACABLE] -> [REPLACEABLE] syndrom, syndom -> syndrome ecc -> ECC buswith -> buswidth endianess -> endianness dont -> don't occures -> occurs independend -> independent wihin -> within erease -> erase blockes -> blocks ... Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: drop mtd_device_registerDmitry Eremin-Solenikov
mtd_device_register() is a limited version of mtd_device_parse_register. Replace it with macro calling mtd_device_parse_register(). Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: remove put_partition_parser() from public headerDmitry Eremin-Solenikov
There is no need to pollute public header with a definition private to mtdpart.c. Move it from mtd/partitions.h to mtdpart.c Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: hide parse_mtd_partitionsDmitry Eremin-Solenikov
There is no need to export parse_mtd_partitions() now , as it's fully handled by registration functions. So move the definition to private header and remove respective EXPORT_SYMBOL_GPL. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: OneNAND: Detect the correct NOP when 4KiB pagesizeKyungmin Park
There are two different 4KiB pagesize chips KFM4G16Q4M series have NOP 4 with version ID 0x0131 But KFM4G16Q5M has NOP 1 with versoin ID 0x013e Note that Q5M means that it has NOP 1. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: drop of_mtd_parse_partitions()Dmitry Eremin-Solenikov
All users have been converted to call of_mtd_parse_partitions through parse_mtd_partitions() multiplexer. Drop obsolete API. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
2011-09-11mtd: prepare to convert of_mtd_parse_partitions to partition parserDmitry Eremin-Solenikov
Prepare to convert of_mtd_parse_partitions() to usual partitions parser: 1) Register ofpart parser 2) Internally don't use passed device for error printing 3) Add device_node to mtd_part_parser_data struct 4) Move of_mtd_parse_partitions from __devinit to common text section 5) add ofpart to the default list of partition parsers Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
2011-09-11mtd: abstract last MTD partition parser argumentDmitry Eremin-Solenikov
Encapsulate last MTD partition parser argument into a separate structure. Currently it holds only 'origin' field for RedBoot parser, but will be extended in future to contain at least device_node for OF devices. Amended commentary to make kerneldoc happy Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
2011-09-11mtd: add new API for handling MTD registrationDmitry Eremin-Solenikov
Lots (nearly all) mtd drivers contain nearly the similar code that calls parse_mtd_partitions, provides some platform-default values, if parsing fails, and registers mtd device. This is an aim to provide single implementation of this scenario: mtd_device_parse_register() which will handle all this parsing and defaults. Artem: amended comments Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: plat-nand: drop unused fields from platform_nand_dataDmitry Eremin-Solenikov
Drop now unused set_parts from struct platform_nand_data. Also, while we are at it, drop long unused priv field from platform_nand_data. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: add a flags for partitions which should just leave smth. after themDmitry Eremin-Solenikov
Add support for MTDPART_OFS_RETAIN: such partitions start at the current offset, take as much space as possible, but rain part->size bytes after the end of the partitions for other parts. Primarily this is intended for ts72xx arm platforms cleanup. Artem: tweaked the patch a bit Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: drop mtd_has_cmdlinepart()Dmitry Eremin-Solenikov
This function is unused now. Drop it. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: drop physmap_configureDmitry Eremin-Solenikov
physmap_configure() and physmap_set_partitions() have no users in kernel. Out of kernel users should have been converted to regular platform device long ago. Drop support for this obsolete API. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: nand: improve comment on NAND_BBT_DYNAMIC_STRUCTBrian Norris
In an attempt to improve the documentation of the BBT code, I am expanding the comments I left in commit: 58373ff0afff4cc8ac40608872995f4d87eb72ec mtd: nand: more BB Detection refactoring and dynamic scan options Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: nand: renumber the reorganized flags in nand.h / bbm.hBrian Norris
After several steps of rearrangement and consolidation, it is probably worth re-sequencing the numbers on some of our affected flags in nand.h and bbm.h. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: nand: rename CREATE_EMPTY bbt flag with proper prefixBrian Norris
According to our new prefix rules, we should rename NAND_CREATE_EMPTY_BBT with a NAND_BBT prefix, i.e., NAND_BBT_CREATE_EMPTY. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: nand: move NAND_CREATE_EMPTY_BBT flagBrian Norris
The NAND_CREATE_EMPTY_BBT flag was added by commit: 453281a973c10bce941b240d1c654d536623b16b mtd: nand: introduce NAND_CREATE_EMPTY_BBT This flag is not used within the kernel and not explained well, so I took the liberty to edit its comments. Also, this is a BBT-related flag (and closely tied with NAND_BBT_CREATE) so I'm moving it to bbm.h next to NAND_BBT_CREATE, thus requiring that we use the flag in nand_chip.bbt_options, *not* in nand_chip.options. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: nand: rename NAND_USE_FLASH_BBTBrian Norris
Recall the recently added prefix requirements: * "NAND_" for flags in nand.h, used in nand_chip.options * "NAND_BBT_" for flags in bbm.h, used in nand_chip.bbt_options or in nand_bbt_descr.options Thus, I am changing NAND_USE_FLASH_BBT to NAND_BBT_USE_FLASH. Again, this flag is found in bbm.h and so should NOT be used in the "nand_chip.options" field. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: nand: consolidate redundant flash-based BBT flagsBrian Norris
This patch works with the following three flags from two headers (nand.h and bbm.h): (1) NAND_USE_FLASH_BBT (nand.h) (2) NAND_USE_FLASH_BBT_NO_OOB (nand.h) (3) NAND_BBT_NO_OOB (bbm.h) These flags are all related and interdependent, yet they were in different headers. Flag (2) is simply the combination of (1) and (3) and can be eliminated. This patch accomplishes the following: * eliminate NAND_USE_FLASH_BBT_NO_OOB (i.e., flag (2)) * move NAND_USE_FLASH_BBT (i.e., flag (1)) to bbm.h It's important to note that because (1) and (3) are now both found in bbm.h, they should NOT be used in the "nand_chip.options" field. I removed a small section from the mtdnand DocBook because it referes to NAND_USE_FLASH_BBT in nand.h, which has been moved to bbm.h. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: nand: separate chip options / bbt_optionsBrian Norris
This patch handles the problems we've been having with using conflicting flags from nand.h and bbm.h in the same nand_chip.options field. We should try to separate these two spaces a little more clearly, and so I have added a bbt_options field to nand_chip. Important notes about nand_chip fields: * bbt_options field should contain ONLY flags from bbm.h. They should be able to pass safely to a nand_bbt_descr data structure. - BBT option flags start with the "NAND_BBT_" prefix. * options field should contian ONLY flags from nand.h. Ideally, they should not be involved in any BBT related options. - NAND chip option flags start with the "NAND_" prefix. * Every flag should have a nice comment explaining what the flag is. While this is not yet the case on all existing flags, please be sure to write one for new flags. Even better, you can help document the code better yourself! Please try to follow these conventions to make everyone's lives easier. Among the flags that are being moved to the new bbt_options field throughout various drivers, etc. are: * NAND_BBT_SCANLASTPAGE * NAND_BBT_SCAN2NDPAGE and there will be more to come. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-09-11mtd: nand: remove NAND_BBT_SCANBYTE1AND6 optionBrian Norris
This patch reverts most of: commit 58373ff0afff4cc8ac40608872995f4d87eb72ec mtd: nand: more BB Detection refactoring and dynamic scan options According to the discussion at: http://lists.infradead.org/pipermail/linux-mtd/2011-May/035696.html the NAND_BBT_SCANBYTE1AND6 flag, although technically valid, can break some existing ECC layouts that use the 6th byte in the OOB for ECC data. Furthermore, we apparently do not need to scan both bytes 1 and 6 in the OOB region of the devices under consideration; instead, we only need to scan one or the other. Thus, the NAND_BBT_SCANBYTE1AND6 flag is at best unnecessary and at worst a regression. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-08-14Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: mmc: remove unused "ddr" parameter in struct mmc_ios mmc: dw_mmc: Fix DDR mode support. mmc: core: use defined R1_STATE_PRG macro for card status mmc: sdhci: use f_max instead of host->clock for timeouts mmc: sdhci: move timeout_clk calculation farther down mmc: sdhci: check host->clock before using it as a denominator mmc: Revert "mmc: sdhci: Fix SDHCI_QUIRK_TIMEOUT_USES_SDCLK" mmc: tmio: eliminate unused variable 'mmc' warning mmc: esdhc-imx: fix card interrupt loss on freescale eSDHC mmc: sdhci-s3c: Fix build for header change mmc: dw_mmc: Fix mask in IDMAC_SET_BUFFER1_SIZE macro mmc: cb710: fix possible pci_dev leak in cb710_pci_configure() mmc: core: Detect eMMC v4.5 ext_csd entries mmc: mmc_test: avoid stalled file in debugfs mmc: sdhci-s3c: add BROKEN_ADMA_ZEROLEN_DESC quirk mmc: sdhci: pxav3: controller needs 32 bit ADMA addressing mmc: sdhci: fix retuning timer wrongly deleted in sdhci_tasklet_finish
2011-08-14Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ASoC: Fix compile warning in wm8750.c ASoC: omap: Update e-mail address of Jarkko Nikula ASoC: SAMSUNG: Add I2S0 internal dma driver ASoC: Terminate WM8750 SPI device ID table ASoC: Add missing break in WM8994 probe ALSA: snd-usb-caiaq: Correct offset fields of outbound iso_frame_desc ALSA: azt3328 - adjust error handling code to include debugging code ALSA: hda - Add CONFIG_SND_HDA_POWER_SAVE to stac_vrefout_set() ALSA: usb-audio - Add quirk for BOSS Micro BR-80 ASoC: Fix typo in wm8750 spi_ids ASoC: Fix warning in Speyside WM8962 ASoC: Fix SPI driver binding for WM8987 ASoC: Fix binding of WM8750 on Jive ASoC: WM8903: Free IRQ on device removal ASoC: Tegra: wm8903 machine driver: Allow re-insertion of module ASoC: Tegra: tegra_pcm_deallocate_dma_buffer: Don't OOPS
2011-08-13mmc: remove unused "ddr" parameter in struct mmc_iosJaehoon Chung
"mmc: dw_mmc: Fix DDR mode support" removed the last user. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
2011-08-13Merge branch 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds
* 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6: dt: add empty of_get_property for non-dt
2011-08-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits) e1000e: increase driver version number e1000e: alternate MAC address update e1000e: do not disable receiver on 82574/82583 e1000e: alternate MAC address does not work on device id 0x1060 PCnet: Fix section mismatch bnx2x: disable dcb on 578xx since not supported yet bnx2x: properly clean indirect addresses bnx2x: prevent race between undi_unload and load flows bnx2x: fix select_queue when FCoE is disabled bnx2x: init FCOE FP only once ipv4: some rt_iif -> rt_route_iif conversions net/bridge/netfilter/ebtables.c: use available error handling code net/netlabel/netlabel_kapi.c: add missing cleanup code net/irda: sh_sir: tidyup compile warning net/irda: sh_sir: add missing header net/irda: sh_irda: add missing header slcan: ldisc generated skbs are received in softirq context scm: Capture the full credentials of the scm sender tcp: initialize variable ecn_ok in syncookies path drivers/net/wireless/wl1251: add missing kfree ...
2011-08-12ASoC: omap: Update e-mail address of Jarkko NikulaJarkko Nikula
My gmail account got disabled and I'm not going to reopen it. Signed-off-by: Jarkko Nikula <jarkko.nikula@bitmer.com> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-08-11move RLIMIT_NPROC check from set_user() to do_execve_common()Vasiliy Kulikov
The patch http://lkml.org/lkml/2003/7/13/226 introduced an RLIMIT_NPROC check in set_user() to check for NPROC exceeding via setuid() and similar functions. Before the check there was a possibility to greatly exceed the allowed number of processes by an unprivileged user if the program relied on rlimit only. But the check created new security threat: many poorly written programs simply don't check setuid() return code and believe it cannot fail if executed with root privileges. So, the check is removed in this patch because of too often privilege escalations related to buggy programs. The NPROC can still be enforced in the common code flow of daemons spawning user processes. Most of daemons do fork()+setuid()+execve(). The check introduced in execve() (1) enforces the same limit as in setuid() and (2) doesn't create similar security issues. Neil Brown suggested to track what specific process has exceeded the limit by setting PF_NPROC_EXCEEDED process flag. With the change only this process would fail on execve(), and other processes' execve() behaviour is not changed. Solar Designer suggested to re-check whether NPROC limit is still exceeded at the moment of execve(). If the process was sleeping for days between set*uid() and execve(), and the NPROC counter step down under the limit, the defered execve() failure because NPROC limit was exceeded days ago would be unexpected. If the limit is not exceeded anymore, we clear the flag on successful calls to execve() and fork(). The flag is also cleared on successful calls to set_user() as the limit was exceeded for the previous user, not the current one. Similar check was introduced in -ow patches (without the process flag). v3 - clear PF_NPROC_EXCEEDED on successful calls to set_user(). Reviewed-by: James Morris <jmorris@namei.org> Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Acked-by: NeilBrown <neilb@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-09dt: add empty of_get_property for non-dtStephen Warren
The patch adds empty function of_get_property for non-dt build, so that drivers migrating to dt can save some '#ifdef CONFIG_OF'. This also fixes the current Tegra compile problem in linux-next. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-08-09Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: sound: pss - don't use the deprecated function check_region ALSA: timer - Add NULL-check for invalid slave timer ALSA: timer - Fix Oops at closing slave timer ASoC: Acknowledge WM8996 interrupts before acting on them ASoC: Rename WM8915 to WM8996 ALSA: Fix dependency of CONFIG_SND_TEA575X ALSA: asihpi - use kzalloc() ALSA: snd-usb-caiaq: Fix keymap for RigKontrol3 ALSA: snd-usb: Fix uninitialized variable usage ALSA: hda - Fix a complile warning in patch_via.c ALSA: hdspm - Fix uninitialized compile warnings ALSA: usb-audio - add quirk for Keith McMillen StringPort ALSA: snd-usb: operate on given mixer interface only ALSA: snd-usb: avoid dividing by zero on invalid input ALSA: snd-usb: Accept UAC2 FORMAT_TYPE descriptors with bLength > 6 sound: oss/pas2: Remove CLOCK_TICK_RATE dependency from PAS16 driver ALSA: hda - Use auto-parser for ASUS UX50, Eee PC P901, S101 and P1005 ALSA: hda - Fix digital-mic mono recording on ASUS Eee PC ASoC: sgtl5000: fix cache handling ASoC: Disable wm_hubs periodic DC servo update
2011-08-08mm: Fix fixup_user_fault() for MMU=nPeter Zijlstra
In commit 2efaca927f5c ("mm/futex: fix futex writes on archs with SW tracking of dirty & young") we forgot about MMU=n. This patch fixes that. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: David Howells <dhowells@redhat.com> Link: http://lkml.kernel.org/r/1311761831.24752.413.camel@twins Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-08cred: use 'const' in get_current_{user,groups}Linus Torvalds
Avoid annoying warnings from these functions ("discards qualifiers") because they assign 'current_cred()' to a non-const pointer. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-08CRED: Restore const to current_cred()David Howells
Commit 3295514841c2 ("fix rcu annotations noise in cred.h") accidentally dropped the const of current->cred inside current_cred() by the insertion of a cast to deal with an RCU annotation loss warning from sparce. Use an appropriate RCU wrapper instead so as not to lose the const. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-08-08ipv4: route non-local sources for raw socketJulian Anastasov
The raw sockets can provide source address for routing but their privileges are not considered. We can provide non-local source address, make sure the FLOWI_FLAG_ANYSRC flag is set if socket has privileges for this, i.e. based on hdrincl (IP_HDRINCL) and transparent flags. Signed-off-by: Julian Anastasov <ja@ssi.bg> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-08net: Make userland include of netlink.h more sane.David S. Miller
Currently userland will barf when including linux/netlink.h unless it precisely includes sys/socket.h first. The issue is where the definition of "sa_family_t" comes from. We've been back and forth on how to fix this issue in the past, see: http://thread.gmane.org/gmane.linux.debian.devel.bugs.general/622621 http://thread.gmane.org/gmane.linux.network/143380 Ben Hutchings suggested we take a hint from how we handle the sockaddr_storage type. First we define a "__kernel_sa_family_t" to linux/socket.h that is always defined. Then if __KERNEL__ is defined, we also define "sa_family_t" as equal to "__kernel_sa_family_t". Then in places like linux/netlink.h we use __kernel_sa_family_t in user visible datastructures. Reported-by: Michel Machado <michel@digirati.com.br> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-08ASoC: Rename WM8915 to WM8996Mark Brown
For marketing reasons the part will be called WM8996. In order to avoid user confusion rename the driver to reflect this. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Acked-by: Liam Girdwood <lrg@ti.com>
2011-08-07fix rcu annotations noise in cred.hAl Viro
task->cred is declared as __rcu, and access to other tasks' ->cred is, indeed, protected. Access to current->cred does not need rcu_dereference() at all, since only the task itself can change its ->cred. sparse, of course, has no way of knowing that... Add force-cast in current_cred(), make current_fsuid() et.al. use it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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