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* Merge tag 'for-linus-20150516' of git://git.infradead.org/linux-mtdLinus Torvalds2015-05-182-5/+7
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MTD fixes from Brian Norris: "Two MTD fixes for 4.1: - readtest: the signal-handling code was clobbering the error codes we should be handling/reporting in this test, rendering it useless. Noticed by Coverity. - the common SPI NOR flash DT binding (merged for 4.1-rc1) is being revised, so let's change that before 4.1 is minted" * tag 'for-linus-20150516' of git://git.infradead.org/linux-mtd: Documentation: dt: mtd: replace "nor-jedec" binding with "jedec, spi-nor" mtd: readtest: don't clobber error reports
| * Documentation: dt: mtd: replace "nor-jedec" binding with "jedec, spi-nor"Brian Norris2015-05-151-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In commit 8ff16cf77ce3 ("Documentation: devicetree: m25p80: add "nor-jedec" binding"), we added a generic "nor-jedec" binding to catch all mostly-compatible SPI NOR flash which can be detected via the READ ID opcode (0x9F). This was discussed and reviewed at the time, however objections have come up since then as part of this discussion: http://lkml.kernel.org/g/20150511224646.GJ32500@ld-irv-0074 It seems the parties involved agree that "jedec,spi-nor" does a better job of capturing the fact that this is SPI-specific, not just any NOR flash. This binding was only merged for v4.1-rc1, so it's still OK to change the naming. At the same time, let's move the documentation to a better name. Next up: stop referring to code (drivers/mtd/devices/m25p80.c) from the documentation. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Cc: Marek Vasut <marex@denx.de> Cc: Rafał Miłecki <zajec5@gmail.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Cc: devicetree@vger.kernel.org Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Mark Rutland <mark.rutland@arm.com>
| * mtd: readtest: don't clobber error reportsBrian Norris2015-05-141-2/+4
| | | | | | | | | | | | | | | | | | Commit 2a6a28e7922c ("mtd: Make MTD tests cancelable") accidentally clobbered any read failure reports. Coverity CID #1296020 Signed-off-by: Brian Norris <computersforpeace@gmail.com>
* | UBI: block: Add missing cache flushesKevin Cernekee2015-05-061-0/+2
|/ | | | | | | | | | | | | | | | | Block drivers are responsible for calling flush_dcache_page() on each BIO request. This operation keeps the I$ coherent with the D$ on architectures that don't have hardware coherency support. Without this flush, random crashes are seen when executing user programs from an ext4 filesystem backed by a ubiblock device. This patch is based on the change implemented in commit 2d4dc890b5c8 ("block: add helpers to run flush_dcache_page() against a bio and a request's pages"). Fixes: 9d54c8a33eec ("UBI: R/O block driver on top of UBI volumes") Signed-off-by: Kevin Cernekee <cernekee@chromium.org> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com> Signed-off-by: Richard Weinberger <richard@nod.at>
* Merge branch 'for-linus' of ↵Linus Torvalds2015-04-262-4/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull fourth vfs update from Al Viro: "d_inode() annotations from David Howells (sat in for-next since before the beginning of merge window) + four assorted fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: RCU pathwalk breakage when running into a symlink overmounting something fix I_DIO_WAKEUP definition direct-io: only inc/dec inode->i_dio_count for file systems fs/9p: fix readdir() VFS: assorted d_backing_inode() annotations VFS: fs/inode.c helpers: d_inode() annotations VFS: fs/cachefiles: d_backing_inode() annotations VFS: fs library helpers: d_inode() annotations VFS: assorted weird filesystems: d_inode() annotations VFS: normal filesystems (and lustre): d_inode() annotations VFS: security/: d_inode() annotations VFS: security/: d_backing_inode() annotations VFS: net/: d_inode() annotations VFS: net/unix: d_backing_inode() annotations VFS: kernel/: d_inode() annotations VFS: audit: d_backing_inode() annotations VFS: Fix up some ->d_inode accesses in the chelsio driver VFS: Cachefiles should perform fs modifications on the top layer only VFS: AF_UNIX sockets should call mknod on the top layer only
| * VFS: assorted d_backing_inode() annotationsDavid Howells2015-04-152-4/+4
| | | | | | | | | | Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds2015-04-241-2/+0
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull slave-dmaengine updates from Vinod Koul: - new drivers for: - Ingenic JZ4780 controller - APM X-Gene controller - Freescale RaidEngine device - Renesas USB Controller - remove device_alloc_chan_resources dummy handlers - sh driver cleanups for peri peri and related emmc and asoc patches as well - fixes and enhancements spread over the drivers * 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (59 commits) dmaengine: dw: don't prompt for DW_DMAC_CORE dmaengine: shdmac: avoid unused variable warnings dmaengine: fix platform_no_drv_owner.cocci warnings dmaengine: pch_dma: fix memory leak on failure path in pch_dma_probe() dmaengine: at_xdmac: unlock spin lock before return dmaengine: xgene: devm_ioremap() returns NULL on error dmaengine: xgene: buffer overflow in xgene_dma_init_channels() dmaengine: usb-dmac: Fix dereferencing freed memory 'desc' dmaengine: sa11x0: report slave capabilities to upper layers dmaengine: vdma: Fix compilation warnings dmaengine: fsl_raid: statify fsl_re_chan_probe dmaengine: Driver support for FSL RaidEngine device. dmaengine: xgene_dma_init_ring_mngr() can be static Documentation: dma: Add documentation for the APM X-Gene SoC DMA device DTS binding arm64: dts: Add APM X-Gene SoC DMA device and DMA clock DTS nodes dmaengine: Add support for APM X-Gene SoC DMA engine driver dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver dmaengine: renesas,usb-dmac: Add device tree bindings documentation dmaengine: edma: fixed wrongly initialized data parameter to the edma callback dmaengine: ste_dma40: fix implicit conversion ...
| * | mtd: sh_flctl: remove slave_id settings for DMAEngineArnd Bergmann2015-02-231-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | Current sh_flctl sets dma_slave_config :: slave_id field for DMAEngine, but it is no longer needed. Let's remove it. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* | | Merge tag 'for-linus-20150422' of git://git.infradead.org/linux-mtdLinus Torvalds2015-04-2235-293/+582
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MTD updates from Brian Norris: "Common MTD: - Add Kconfig option for keeping both the 'master' and 'partition' MTDs registered as devices. This would really make a better default if we could do it over, as it allows a lot more flexibility in (1) determining the flash topology of the system from user-space and (2) adding temporary partitions at runtime (ioctl(BLKPG)). Unfortunately, this would possibly cause user-space breakage, as it will cause renumbering of the /dev/mtdX devices. We'll see if we can change this in the future, as there have already been a few people looking for this feature, and I know others have just been working around our current limitations instead of fixing them this way. - Along with the previous change, add some additional information to sysfs, so user-space can read the offset of each partition within its master device SPI NOR: - add new device tree compatible binding to represent the mostly-compatible class of SPI NOR flash which can be detected by their extended JEDEC ID bytes, cutting down the duplication of our ID tables - misc. new IDs Various other miscellaneous fixes and changes" * tag 'for-linus-20150422' of git://git.infradead.org/linux-mtd: (53 commits) mtd: spi-nor: Add support for Macronix mx25u6435f serial flash mtd: spi-nor: Add support for Winbond w25q64dw serial flash mtd: spi-nor: add support for the Winbond W25X05 flash mtd: spi-nor: support en25s64 device mtd: m25p80: bind to "nor-jedec" ID, for auto-detection Documentation: devicetree: m25p80: add "nor-jedec" binding mtd: Make MTD tests cancelable mtd: mtd_oobtest: Fix bitflip_limit usage in test case 3 mtd: docg3: remove invalid __exit annotations mtd: fsl_ifc_nand: use msecs_to_jiffies for time conversion mtd: atmel_nand: don't map the ROM table if no pmecc table offset in DT mtd: atmel_nand: add a definition for the oob reserved bytes mtd: part: Remove partition overlap checks mtd: part: Add sysfs variable for offset of partition mtd: part: Create the master device node when partitioned mtd: ts5500_flash: Fix typo in MODULE_DESCRIPTION in ts5500_flash.c mtd: denali: Disable sub-page writes in Denali NAND driver mtd: pxa3xx_nand: cleanup wait_for_completion handling mtd: nand: gpmi: Check for scan_bbt() error mtd: nand: gpmi: fixup return type of wait_for_completion_timeout ...
| * \ \ Merge MTD fixes from 4.0 into -nextBrian Norris2015-04-221-0/+1
| |\ \ \
| * | | | mtd: spi-nor: Add support for Macronix mx25u6435f serial flashMika Westerberg2015-04-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add Macronix (mx25u6435f) 8MB flash to the list of supported chips. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: spi-nor: Add support for Winbond w25q64dw serial flashMika Westerberg2015-04-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add Winbond (w25q64dw) 8MB flash to the list of supported chips. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: spi-nor: add support for the Winbond W25X05 flashGabor Juhos2015-04-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Luka Perkov <luka@openwrt.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: spi-nor: support en25s64 deviceShengzhou Liu2015-04-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for EON en25s64 SPI flash. Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: m25p80: bind to "nor-jedec" ID, for auto-detectionBrian Norris2015-04-051-3/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the new 'nor-jedec' binding to provide automatic detection of flash that use the 0x9F READ ID opcode. This can help for use cases where platforms just specify compatibility with "m25p80", and then see messages like this: m25p80 spi32766.0: found s25fl256s1, expected m25p80 Instead, they can just specify the generic string and see this: m25p80 spi32766.0: s25fl256s1 (32768 Kbytes) Also, update the language about m25p_ids[] to straighten out the expectations here. We should no longer need to continuously grow the m25p_ids[] table, and in fact, we might want to start removing entries which are not used in device trees so far, so we can just default to auto-detection as much as possible in the future. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Cc: Rafał Miłecki <zajec5@gmail.com>
| * | | | mtd: Make MTD tests cancelableRichard Weinberger2015-04-0510-24/+120
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I always go nuts when I start an MTD test on a slow device and have to wait forever until it finishes. From the debug output I already know what the issue is but I have to wait or reset the board hard. Resetting is often not an option (remote access, you don't want lose the current state, etc...). The solution is easy, check for pending signals at key positions in the code. Using that one can even stop a test by pressing CTRL-C as insmod/modprobe have SIGINT pending. Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: mtd_oobtest: Fix bitflip_limit usage in test case 3Roger Quadros2015-04-051-27/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In test case 3, we set vary_offset to write at different offsets and lengths in the OOB available area. We need to do the bitflip_limit check while checking for 0xff outside the OOB offset + length area that we didn't modify during write. Signed-off-by: Roger Quadros <rogerq@ti.com> [Brian: whitespace fixup] Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: docg3: remove invalid __exit annotationsBrian Norris2015-04-051-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The .remove callback may be used when detaching a device via sysfs, so we can't expect to free up this memory. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
| * | | | mtd: fsl_ifc_nand: use msecs_to_jiffies for time conversionNicholas Mc Guire2015-04-051-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is only an API consolidation and should make things more readable it replaces var * HZ / 1000 by msecs_to_jiffies(var) which helps readability and also handles all corner-cases properly. Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: atmel_nand: don't map the ROM table if no pmecc table offset in DTWu, Josh2015-04-051-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | if atmel,pmecc-lookup-table-offset is not found in DT node, we don't need to map the ROM table as we will build a runtime gf table anyway. Reported-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Josh Wu <josh.wu@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: atmel_nand: add a definition for the oob reserved bytesJosh Wu2015-04-052-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's better to use a macro instead of just a number. Signed-off-by: Josh Wu <josh.wu@atmel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: part: Remove partition overlap checksDan Ehrenberg2015-04-051-20/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes MTD dynamic partitioning more flexible by removing overlap checks for dynamic partitions. I don't see any particular reason why overlapping dynamic partitions should be prohibited while static partitions are allowed to overlap freely. The checks previously had an off-by-one error, where 'end' should be one less than what it is currently set at, and adding partitions out of increasing order will fail. Disabling the checks resolves this issue. Signed-off-by: Dan Ehrenberg <dehrenberg@chromium.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: part: Add sysfs variable for offset of partitionDan Ehrenberg2015-04-051-0/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes a sysfs variable called 'offset' on each partition which contains the offset in bytes from the beginning of the master device that the partition starts. Signed-off-by: Dan Ehrenberg <dehrenberg@chromium.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: part: Create the master device node when partitionedDan Ehrenberg2015-04-053-21/+62
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For many use cases, it helps to have a device node for the entire MTD device as well as device nodes for the individual partitions. For example, this allows querying the entire device's properties. A common idiom is to create an additional partition which spans over the whole device. This patch makes a config option, CONFIG_MTD_PARTITIONED_MASTER, which makes the master partition present even when the device is partitioned. This isn't turned on by default since it presents a backwards-incompatible device numbering. The patch also makes the parent of a partition device be the master, if the config flag is set, now that the master is a full device. Signed-off-by: Dan Ehrenberg <dehrenberg@chromium.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: ts5500_flash: Fix typo in MODULE_DESCRIPTION in ts5500_flash.cMasanari Iida2015-03-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a spelling typo in MODULE_DESCRIPTION in ts5500_flash.c. Signed-off-by: Masanari Iida <standby24x7@gmail.com> [ Brian: fixed grammar in a spelling patch :) ] Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: denali: Disable sub-page writes in Denali NAND driverGraham Moore2015-03-301-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Denali Controller IP does not support sub-page writes. Signed-off-by: Graham Moore <grmoore@opensource.altera.com> Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: pxa3xx_nand: cleanup wait_for_completion handlingNicholas Mc Guire2015-03-301-14/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | return type of wait_for_completion_timeout is unsigned long not int, this patch uses the return value of wait_for_completion_timeout in the condition directly rather than assigning it to an incorrect type variable. The variable used for handling the return of wait_for_cmpletion_timeout was int but should be unsigned long, where it was not in use for anything else and the return value in case of completion (>0) is not used it was removed and wait_for_completion_timeout() used directly in the if condition. To make the timeout values a bit simpler to read and also handle all of the corner cases correctly the declarations are moved to msecs_to_jiffies(). The timeout declaration cleanup is just for readability Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: nand: gpmi: Check for scan_bbt() errorFabio Estevam2015-03-301-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In case of scan_bbt() failure, we should better propagate it. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Huang Shijie <shijie.huang@intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: nand: gpmi: fixup return type of wait_for_completion_timeoutNicholas Mc Guire2015-03-301-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | return type of wait_for_completion_timeout is unsigned long not int. The return variable is renamed to reflect its use and the type adjusted to unsigned long. Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org> Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Huang Shijie <shijie.huang@intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: fsl-quadspi: cleanup wait_for_completion return handlingNicholas Mc Guire2015-03-301-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | return type of wait_for_completion_timeout is unsigned long not int, this patch uses the return value of wait_for_completion_timeout in the condition directly rather than adding a additional appropriately typed variable. Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org> Acked-by: Han Xu <han.xu@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: fsl-quadspi: Print the error valueFabio Estevam2015-03-301-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When displaying dev_err() messages it is useful to print the error value. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Han Xu <han.xu@freescale.com> [Brian: fix up "can not" at the same time] Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: cfi: clean up some indentingDan Carpenter2015-03-301-15/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These lines were all indented one tab more than they should be. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: maps: sa1100-flash: remove incorrect __exit markupsDmitry Torokhov2015-03-301-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Even if bus is not hot-pluggable, the devices can be unbound from the driver via sysfs, so we should not be using __exit annotations on remove() methods. The only exception is drivers registered with platform_driver_probe() which specifically disables sysfs bind/unbind attributes. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: replace CONFIG_8xx by CONFIG_PPC_8xxChristophe Leroy2015-03-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Two config options exist to define powerpc MPC8xx: * CONFIG_PPC_8xx * CONFIG_8xx In addition, CONFIG_PPC_8xx also defines CONFIG_CPM1 as communication co-processor arch/powerpc/platforms/Kconfig.cputype has contained the following comment about CONFIG_8xx item for some years: "# this is temp to handle compat with arch=ppc" It looks like not many places still have that old CONFIG_8xx used, so it is likely to be a good time to get rid of it completely ? Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: fsmc_nand.c: Use default timings if none are provided in the dtsStefan Roese2015-03-301-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Without this patch the timings are all set to 0 if not specified in the dts. With this patch the driver falls back to use the defaults that are already present in the driver and are known to work okay for some (older) boards. Tested on a custom SPEAr600 based board. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> Cc: Viresh Kumar <viresh.linux@gmail.com> Cc: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: nand: Prevent possible kernel lockup in nand_command()Roger Quadros2015-03-301-4/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a NAND device is not really present or pin muxes are not correctly configured we can lock up the kernel waiting infinitely for NAND_STATUS to be ready. This can be easily reproduced on TI's DRA7-evm board by booting it without NAND support in u-boot and disabling NAND pin muxes in the kernel. Add timeout when waiting for NAND_CMD_RESET completion. As per ONFi v4.0 tRST can be upto 250ms for EZ-NAND and 5ms for raw NAND. Signed-off-by: Roger Quadros <rogerq@ti.com> Tested-by: Nishanth Menon <nm@ti.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: spi-nor: factor out replace-able flash_{lock,unlock}Brian Norris2015-03-271-19/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Flash lock/unlock is a flash-specific operations. Factor out a callback for it to more readily support other vendors. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Tested-by: VIET NGA DAO <vndao@altera.com>
| * | | | mtd: nand: fix spelling of REPLACEABLEBrian Norris2015-03-241-1/+1
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: nand: fully initialize mtd_oob_opsBrian Norris2015-03-111-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We're not initializing the ooblen field. Our users don't care, since they check that oobbuf == NULL first, but it's good practice to zero unused fields out. We can drop the NULL initializations since we're memset()ing the whole thing. Noticed by Coverity, CID #200821, #200822 Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: blkdevs: remove dead codeBrian Norris2015-03-111-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The only exit (break) from the preceding loop is nested within a condition which yields req == NULL. This code is dead. Coverity CID #752669 Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: nand: denali: drop dead codeBrian Norris2015-03-111-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TclsRising is always 1. Caught by Coverity. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
| * | | | mtd: nand: fixup bounds checks for nand_{lock,unlock}()Brian Norris2015-03-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Coverity noticed that these 'ret' assignments weren't being used. Let's use them. Note that nand_lock() and nand_unlock() are still not officially used by any drivers. Coverity CIDs #1227054 and #1227037 Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: tests: fix more potential integer overflowsBrian Norris2015-03-115-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Caught by Coverity (CID #200625 and others) Signed-off-by: Brian Norris <computersforpeace@gmail.com> Cc: Akinobu Mita <akinobu.mita@gmail.com>
| * | | | mtd: onenand: drop dead codeBrian Norris2015-03-111-9/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'ret' is always zero, so this is all dead code. This should quiet Coverity CID #1226739. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Cc: Kyungmin Park <kyungmin.park@samsung.com>
| * | | | mtd: docg3: drop dead codeBrian Norris2015-03-111-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If no devices were found, we would already have skipped over this code. Detected by Coverity, CID #744270 Signed-off-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
| * | | | mtd: mxc-nand: Warn on unimplemented commandsUwe Kleine-König2015-03-111-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PARAM command was long unimplemented and it probably wasn't noticed because chip probing using only the few bytes returned by the READID command are good enough in most cases to determine the chip in use. Still to notice such a shortcoming earlier in the future would be nice in case it's something more vital. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: mxc-nand: Implement support for PARAM commandUwe Kleine-König2015-03-111-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The mxc-nand driver never supported the PARAM command to read out the ONFI parameter page and so always relied on probing my manufacturer and device id (as provided by the READID command). This patch implements reading out the first parameter page copy at least which should be good enough in practise. This makes the boot log change from nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xb1 nand: Micron NAND 128MiB 1,8V 16-bit to nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xb1 nand: Micron MT29F1G16ABBDAH4 on my machine. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: mxc-nand: Allow to use column addresses different from 0Uwe Kleine-König2015-03-111-11/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The mxc-nand controller works pagewise and so usually only sends commands to the flash chip with column == 0. A request with column != 0 from the upper layer is then fulfilled by indexing appropriately into the device's RAM buffer. To be able to access the ONFI marker at offset 0x20 in reply to the READID command however it's invalid to read 32 bytes starting from column 0. So let the function used to send the address cycles send the column address actually passed instead of 0 and fix all callers to pass 0 instead appropriately. Also add some warnings in case this patch changes the drivers semantics. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: mxc-nand: Do the word to byte mangling in the read_byte callbackUwe Kleine-König2015-03-111-24/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the hardware operates in 16 bit mode it always reads 16 bits even for operations that only have the lower 8 bits defined. So the upper bits must be discarded. Do this in the read_byte callback instead of when reading the NAND id to support reading byte wise more than 5 bytes and at other occations (like reading the ONFI parameter page). Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
| * | | | mtd: mxc-nand: Only enable hardware checksumming for fully detected flashesUwe Kleine-König2015-03-111-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At least on i.MX25 (i.e. NFCv2) preset_v2 is called with mtd->writesize == 0 that is before the connect flash chip is detected. It then configures for 8 bit ECC mode which needs 26 bytes of OOB per 512 bytes main section. For flashes with a smaller OOB area issuing a read page command makes the controller stuck with this config. Note that this currently doesn't hurt because the first read page command is issued only after detection is complete and preset is called once more. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 01:07:54 +0000