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2015-09-09Merge tag 'for-linus-20150909' of git://git.infradead.org/linux-mtdLinus Torvalds2-5/+8
Pull more MTD updates from Brian Norris: "There was one significant bug in my first pull request, fixed here. I also threw in a few trivial ID additions and a small module rename. Details: - SPI NOR: bug fix for a "end of table" check that resulted in a NULL dereference in some cases - SPI NOR: a few new IDs / feature flags - OMAP2 NAND: rename module so it doesn't conflict with onenand omap2.ko" * tag 'for-linus-20150909' of git://git.infradead.org/linux-mtd: mtd: spi-nor: fix NULL dereference when no match found in spi_nor_ids[] mtd: spi-nor: s25sl064p supports both dual and quad I/O mtd: spi-nor: allow dual/quad reads on S25FL129P mtd: nand: omap2: Rename shippable module to omap2_nand mtd: spi-nor: Add support for sst25wf020a mtd: spi-nor: Add support for Micron n25q064a serial flash
2015-09-09Merge tag 'libnvdimm-for-4.3' of ↵Linus Torvalds3-3/+3
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm updates from Dan Williams: "This update has successfully completed a 0day-kbuild run and has appeared in a linux-next release. The changes outside of the typical drivers/nvdimm/ and drivers/acpi/nfit.[ch] paths are related to the removal of IORESOURCE_CACHEABLE, the introduction of memremap(), and the introduction of ZONE_DEVICE + devm_memremap_pages(). Summary: - Introduce ZONE_DEVICE and devm_memremap_pages() as a generic mechanism for adding device-driver-discovered memory regions to the kernel's direct map. This facility is used by the pmem driver to enable pfn_to_page() operations on the page frames returned by DAX ('direct_access' in 'struct block_device_operations'). For now, the 'memmap' allocation for these "device" pages comes from "System RAM". Support for allocating the memmap from device memory will arrive in a later kernel. - Introduce memremap() to replace usages of ioremap_cache() and ioremap_wt(). memremap() drops the __iomem annotation for these mappings to memory that do not have i/o side effects. The replacement of ioremap_cache() with memremap() is limited to the pmem driver to ease merging the api change in v4.3. Completion of the conversion is targeted for v4.4. - Similar to the usage of memcpy_to_pmem() + wmb_pmem() in the pmem driver, update the VFS DAX implementation and PMEM api to provide persistence guarantees for kernel operations on a DAX mapping. - Convert the ACPI NFIT 'BLK' driver to map the block apertures as cacheable to improve performance. - Miscellaneous updates and fixes to libnvdimm including support for issuing "address range scrub" commands, clarifying the optimal 'sector size' of pmem devices, a clarification of the usage of the ACPI '_STA' (status) property for DIMM devices, and other minor fixes" * tag 'libnvdimm-for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (34 commits) libnvdimm, pmem: direct map legacy pmem by default libnvdimm, pmem: 'struct page' for pmem libnvdimm, pfn: 'struct page' provider infrastructure x86, pmem: clarify that ARCH_HAS_PMEM_API implies PMEM mapped WB add devm_memremap_pages mm: ZONE_DEVICE for "device memory" mm: move __phys_to_pfn and __pfn_to_phys to asm/generic/memory_model.h dax: drop size parameter to ->direct_access() nd_blk: change aperture mapping from WC to WB nvdimm: change to use generic kvfree() pmem, dax: have direct_access use __pmem annotation dax: update I/O path to do proper PMEM flushing pmem: add copy_from_iter_pmem() and clear_pmem() pmem, x86: clean up conditional pmem includes pmem: remove layer when calling arch_has_wmb_pmem() pmem, x86: move x86 PMEM API to new pmem.h header libnvdimm, e820: make CONFIG_X86_PMEM_LEGACY a tristate option pmem: switch to devm_ allocations devres: add devm_memremap libnvdimm, btt: write and validate parent_uuid ...
2015-09-04Merge tag 'powerpc-4.3-1' of ↵Linus Torvalds1-128/+130
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - support "hybrid" iommu/direct DMA ops for coherent_mask < dma_mask from Benjamin Herrenschmidt - EEH fixes for SRIOV from Gavin - introduce rtas_get_sensor_fast() for IRQ handlers from Thomas Huth - use hardware RNG for arch_get_random_seed_* not arch_get_random_* from Paul Mackerras - seccomp filter support from Michael Ellerman - opal_cec_reboot2() handling for HMIs & machine checks from Mahesh Salgaonkar - add powerpc timebase as a trace clock source from Naveen N. Rao - misc cleanups in the xmon, signal & SLB code from Anshuman Khandual - add an inline function to update POWER8 HID0 from Gautham R. Shenoy - fix pte_pagesize_index() crash on 4K w/64K hash from Michael Ellerman - drop support for 64K local store on 4K kernels from Michael Ellerman - move dma_get_required_mask() from pnv_phb to pci_controller_ops from Andrew Donnellan - initialize distance lookup table from drconf path from Nikunj A Dadhania - enable RTC class support from Vaibhav Jain - disable automatically blocked PCI config from Gavin Shan - add LEDs driver for PowerNV platform from Vasant Hegde - fix endianness issues in the HVSI driver from Laurent Dufour - kexec endian fixes from Samuel Mendoza-Jonas - fix corrupted pdn list from Gavin Shan - fix fenced PHB caused by eeh_slot_error_detail() from Gavin Shan - Freescale updates from Scott: Highlights include 32-bit memcpy/memset optimizations, checksum optimizations, 85xx config fragments and updates, device tree updates, e6500 fixes for non-SMP, and misc cleanup and minor fixes. - a ton of cxl updates & fixes: - add explicit precision specifiers from Rasmus Villemoes - use more common format specifier from Rasmus Villemoes - destroy cxl_adapter_idr on module_exit from Johannes Thumshirn - destroy afu->contexts_idr on release of an afu from Johannes Thumshirn - compile with -Werror from Daniel Axtens - EEH support from Daniel Axtens - plug irq_bitmap getting leaked in cxl_context from Vaibhav Jain - add alternate MMIO error handling from Ian Munsie - allow release of contexts which have been OPENED but not STARTED from Andrew Donnellan - remove use of macro DEFINE_PCI_DEVICE_TABLE from Vaishali Thakkar - release irqs if memory allocation fails from Vaibhav Jain - remove racy attempt to force EEH invocation in reset from Daniel Axtens - fix + cleanup error paths in cxl_dev_context_init from Ian Munsie - fix force unmapping mmaps of contexts allocated through the kernel api from Ian Munsie - set up and enable PSL Timebase from Philippe Bergheaud * tag 'powerpc-4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (140 commits) cxl: Set up and enable PSL Timebase cxl: Fix force unmapping mmaps of contexts allocated through the kernel api cxl: Fix + cleanup error paths in cxl_dev_context_init powerpc/eeh: Fix fenced PHB caused by eeh_slot_error_detail() powerpc/pseries: Cleanup on pci_dn_reconfig_notifier() powerpc/pseries: Fix corrupted pdn list powerpc/powernv: Enable LEDS support powerpc/iommu: Set default DMA offset in dma_dev_setup cxl: Remove racy attempt to force EEH invocation in reset cxl: Release irqs if memory allocation fails cxl: Remove use of macro DEFINE_PCI_DEVICE_TABLE powerpc/powernv: Fix mis-merge of OPAL support for LEDS driver powerpc/powernv: Reset HILE before kexec_sequence() powerpc/kexec: Reset secondary cpu endianness before kexec powerpc/hvsi: Fix endianness issues in the HVSI driver leds/powernv: Add driver for PowerNV platform powerpc/powernv: Create LED platform device powerpc/powernv: Add OPAL interfaces for accessing and modifying system LED states powerpc/powernv: Fix the log message when disabling VF cxl: Allow release of contexts which have been OPENED but not STARTED ...
2015-09-03mtd: spi-nor: fix NULL dereference when no match found in spi_nor_ids[]Brian Norris1-1/+1
Commit 06bb6f5a69df ("mtd: spi-nor: stop (ab)using struct spi_device_id") converted an array into a pointer, which means that we should be checking if the pointer goes anywhere, not whether the C string is empty. To do the latter means we dereference a NULL pointer when we reach the terminating entry, for which 'name' is now NULL instead of an array { 0, 0, ... }. Sample crash: [ 1.101371] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 1.109457] pgd = c0004000 [ 1.112157] [00000000] *pgd=00000000 [ 1.115736] Internal error: Oops: 5 [#1] SMP ARM [ 1.120345] Modules linked in: [ 1.123405] CPU: 3 PID: 1 Comm: swapper/0 Not tainted 4.2.0-next-20150902+ #61 [ 1.130611] Hardware name: Rockchip (Device Tree) [ 1.135306] task: ee0b8d40 ti: ee0ba000 task.ti: ee0ba000 [ 1.140697] PC is at spi_nor_scan+0x90/0x8c4 [ 1.144958] LR is at spi_nor_scan+0xa4/0x8c4 ... [ 1.504112] [<c03cc2e0>] (spi_nor_scan) from [<c03cb188>] (m25p_probe+0xc8/0x11c) [ 1.511583] [<c03cb188>] (m25p_probe) from [<c03cd9d8>] (spi_drv_probe+0x60/0x7c) [ 1.519055] [<c03cd9d8>] (spi_drv_probe) from [<c037faa0>] (driver_probe_device+0x1a0/0x444) [ 1.527478] [<c037faa0>] (driver_probe_device) from [<c037fec8>] (__device_attach_driver+0x94/0xa0) [ 1.536507] [<c037fec8>] (__device_attach_driver) from [<c037db3c>] (bus_for_each_drv+0x94/0xa4) [ 1.545277] [<c037db3c>] (bus_for_each_drv) from [<c037f7e4>] (__device_attach+0xa4/0x144) [ 1.553526] [<c037f7e4>] (__device_attach) from [<c0380058>] (device_initial_probe+0x1c/0x20) [ 1.562035] [<c0380058>] (device_initial_probe) from [<c037ec88>] (bus_probe_device+0x38/0x94) [ 1.570631] [<c037ec88>] (bus_probe_device) from [<c037ccf4>] (device_add+0x430/0x558) [ 1.578534] [<c037ccf4>] (device_add) from [<c03d0240>] (spi_add_device+0xe4/0x174) [ 1.586178] [<c03d0240>] (spi_add_device) from [<c03d0a24>] (spi_register_master+0x698/0x7d4) [ 1.594688] [<c03d0a24>] (spi_register_master) from [<c03d0ba0>] (devm_spi_register_master+0x40/0x7c) [ 1.603892] [<c03d0ba0>] (devm_spi_register_master) from [<c03d2fb4>] (rockchip_spi_probe+0x360/0x3f4) [ 1.613182] [<c03d2fb4>] (rockchip_spi_probe) from [<c0381e34>] (platform_drv_probe+0x58/0xa8) [ 1.621779] [<c0381e34>] (platform_drv_probe) from [<c037faa0>] (driver_probe_device+0x1a0/0x444) [ 1.630635] [<c037faa0>] (driver_probe_device) from [<c037fdc4>] (__driver_attach+0x80/0xa4) [ 1.639058] [<c037fdc4>] (__driver_attach) from [<c037e850>] (bus_for_each_dev+0x98/0xac) [ 1.647221] [<c037e850>] (bus_for_each_dev) from [<c037f448>] (driver_attach+0x28/0x30) [ 1.655210] [<c037f448>] (driver_attach) from [<c037ef74>] (bus_add_driver+0x128/0x250) [ 1.663200] [<c037ef74>] (bus_add_driver) from [<c0380c40>] (driver_register+0xac/0xf0) [ 1.671191] [<c0380c40>] (driver_register) from [<c0381d50>] (__platform_driver_register+0x58/0x6c) [ 1.680221] [<c0381d50>] (__platform_driver_register) from [<c0a467c8>] (rockchip_spi_driver_init+0x18/0x20) [ 1.690033] [<c0a467c8>] (rockchip_spi_driver_init) from [<c00098a4>] (do_one_initcall+0x124/0x1dc) [ 1.699063] [<c00098a4>] (do_one_initcall) from [<c0a19f84>] (kernel_init_freeable+0x218/0x2ec) [ 1.707748] [<c0a19f84>] (kernel_init_freeable) from [<c0719ed8>] (kernel_init+0x1c/0xf4) [ 1.715912] [<c0719ed8>] (kernel_init) from [<c000fe50>] (ret_from_fork+0x14/0x24) [ 1.723460] Code: e3510000 159f67c0 0a00000c e5961000 (e5d13000) [ 1.729564] ---[ end trace 95baa6b3b861ce25 ]--- Fixes: 06bb6f5a69df ("mtd: spi-nor: stop (ab)using struct spi_device_id") Signed-off-by: Brian Norris <computersforpeace@gmail.com> Cc: Rafał Miłecki <zajec5@gmail.com>
2015-09-03mtd: spi-nor: s25sl064p supports both dual and quad I/OJoachim Eastwood1-1/+1
This chip can be found on Hitex LPC4350 Evaluation Board. Signed-off-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-09-03mtd: spi-nor: allow dual/quad reads on S25FL129PJonas Gorski1-2/+2
According to the datasheet[1], both S25FL129P0 (256kB sectors) and S25FL129P1 (64kB sectors) support dual read, quad read, dual i/o read and quad i/o read. I have verified dual read to be working for S25FL129P1 on a dual capable spi controller. Quad as well as S25FL129P0 is untested, lacking hardware to verify. [1] http://www.spansion.com/Support/Datasheets/S25FL129P_00.pdf Signed-off-by: Jonas Gorski <jogo@openwrt.org> Reviewed-by: Marek Vasut <marex@denx.de> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-09-03mtd: nand: omap2: Rename shippable module to omap2_nandRoger Quadros1-1/+2
As both omap2 onenand and omap2 nand driver modules are named the same i.e. "omap2.ko", only one of them gets shipped during MODPOST if both are configured as loadable modules. To avoid this ambiguity let's ship the omap2 nand driver as "omap2_nand.ko" Reported by Pierre Neyron via github https://github.com/beagleboard/linux/issues/40 Cc: Robert Nelson <robertcnelson@gmail.com> Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-09-02mtd: spi-nor: Add support for sst25wf020aAlexis Ballier1-0/+1
It is a 256KiB flash with 4 KiB erase sectors and 64KiB overlay blocks. This is the one available on Hardkernel's Odroid U3 shield. Signed-off-by: Alexis Ballier <aballier@gentoo.org> [Brian: seems like this does NOT require the usual SST_WRITE hacks] Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-09-02mtd: spi-nor: Add support for Micron n25q064a serial flashMika Westerberg1-0/+1
Add Micron (n25q064a) 8MB flash to the list of supported chips. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Jagan Teki <jteki@openedev.com> [Brian: fixup context] Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-09-02Merge branch 'for-4.3/core' of git://git.kernel.dk/linux-blockLinus Torvalds1-1/+1
Pull core block updates from Jens Axboe: "This first core part of the block IO changes contains: - Cleanup of the bio IO error signaling from Christoph. We used to rely on the uptodate bit and passing around of an error, now we store the error in the bio itself. - Improvement of the above from myself, by shrinking the bio size down again to fit in two cachelines on x86-64. - Revert of the max_hw_sectors cap removal from a revision again, from Jeff Moyer. This caused performance regressions in various tests. Reinstate the limit, bump it to a more reasonable size instead. - Make /sys/block/<dev>/queue/discard_max_bytes writeable, by me. Most devices have huge trim limits, which can cause nasty latencies when deleting files. Enable the admin to configure the size down. We will look into having a more sane default instead of UINT_MAX sectors. - Improvement of the SGP gaps logic from Keith Busch. - Enable the block core to handle arbitrarily sized bios, which enables a nice simplification of bio_add_page() (which is an IO hot path). From Kent. - Improvements to the partition io stats accounting, making it faster. From Ming Lei. - Also from Ming Lei, a basic fixup for overflow of the sysfs pending file in blk-mq, as well as a fix for a blk-mq timeout race condition. - Ming Lin has been carrying Kents above mentioned patches forward for a while, and testing them. Ming also did a few fixes around that. - Sasha Levin found and fixed a use-after-free problem introduced by the bio->bi_error changes from Christoph. - Small blk cgroup cleanup from Viresh Kumar" * 'for-4.3/core' of git://git.kernel.dk/linux-block: (26 commits) blk: Fix bio_io_vec index when checking bvec gaps block: Replace SG_GAPS with new queue limits mask block: bump BLK_DEF_MAX_SECTORS to 2560 Revert "block: remove artifical max_hw_sectors cap" blk-mq: fix race between timeout and freeing request blk-mq: fix buffer overflow when reading sysfs file of 'pending' Documentation: update notes in biovecs about arbitrarily sized bios block: remove bio_get_nr_vecs() fs: use helper bio_add_page() instead of open coding on bi_io_vec block: kill merge_bvec_fn() completely md/raid5: get rid of bio_fits_rdev() md/raid5: split bio for chunk_aligned_read block: remove split code in blkdev_issue_{discard,write_same} btrfs: remove bio splitting and merge_bvec_fn() calls bcache: remove driver private bio splitting code block: simplify bio_add_page() block: make generic_make_request handle arbitrarily sized bios blk-cgroup: Drop unlikely before IS_ERR(_OR_NULL) block: don't access bio->bi_error after bio_put() block: shrink struct bio down to 2 cache lines again ...
2015-08-28mtd: mtd_oobtest: Fix the address offset with vary_offset caseRoger Quadros1-6/+12
When vary_offset is set (e.g. test case 3), the offset is not always zero so memcmpshow() will show the wrong offset in the print message. To fix this we introduce a new function memcmpshowoffset() which takes offset as a parameter and displays the right offset and use it in the case where offset is non zero. The old memcmpshow() functionality is preserved by converting it into a macro with offset preset to 0. Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-25mtd: blkdevs: fix switch-bool compilation warningTomer Barletz1-6/+2
With gcc 5.1 I get: warning: switch condition has boolean value [-Wswitch-bool] Signed-off-by: Tomer Barletz <barletz@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-25mtd: spi-nor: stop (ab)using struct spi_device_idRafał Miłecki1-35/+27
Using struct spi_device_id for storing list of flash devices comes from early SPI NOR framework days. Thanks to the commit 70f3ce0510af ("mtd: spi-nor: make spi_nor_scan() take a chip type name, not spi_device_id") we can stop using spi_device_id and just switch to our own struct. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-25mtd: nand: add Toshiba TC58NVG0S3E to nand_ids tableOleksij Rempel1-0/+4
Add the full description of the Toshiba TC58NVG0S3E NAND chip in the nand_ids table so that we can later use the NAND ECC info and ONFI timing mode in controller drivers. Tested with asm9260_nand driver. [Brian: driver still under review] Signed-off-by: Oleksij Rempel <linux@rempel-privat.de> Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-22mtd: dataflash: Export OF module alias informationJavier Martinez Canillas1-0/+1
The SPI core currently reports the MODALIAS uevent as "spi:<modalias>" even for SPI devices that were registered by OF. That means the OF module alias exported by MODULE_OF_TABLE(of,...) is currently not used and user-space has no way to autoload this module. But it is still a good practice to add the OF module alias information into the kernel module even when it currently is unused so once the SPI core is changed to report a correct OF modalias uevent, module autoloading will be working for this driver. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-20nand: pxa3xx: Increase READ_ID buffer and make the size staticEzequiel García1-21/+10
The read ID count should be made as large as the maximum READ_ID size, so there's no need to have dynamic size. This commit sets the hardware maximum read ID count, which should be more than enough on all cases. Also, we get rid of the read_id_bytes, and use a macro instead. Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-20mtd: nand: pxa3xx-nand: fix random command timeoutsRobert Jarzmik1-3/+7
When 2 commands are submitted in a row, and the second is very quick, the completion of the second command might never come. This happens especially if the second command is quick, such as a status read after an erase. The issue is that in the interrupt handler, the status bits are cleared after the new command is issued. There is a small temporal window where this happens : - the previous command has set the command done bit - the ready for a command bit is set - the handler submits the next command - just then, the command completes, and the command done bit is still set - the handler clears the "previous" command done bit - the handler exits In this flow, the "command done" of the next command will never trigger a new interrupt to finish the status command, as it was cleared for both commands. Fix this by clearing the status bit before submitting a new command. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Tested-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-20mtd: nand: pxa3xx_nand: fix early spurious interruptRobert Jarzmik1-1/+1
When the nand is first probe, and upon the first command start, the status bits should be cleared before the interrupts are unmasked. The bug is tricky : if the bootloader left a status bit set, the unmasking of interrupts does trigger the interrupt handler before the first command is issued, blocking the good behavior of the nand. The same would happen if in pxa3xx_nand code flow a status bit is left, and then a command is started. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Tested-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-19mtd: pxa3xx_nand: add a default chunk sizeAntoine Ténart1-0/+3
When keeping the configuration set by the bootloader (by using the marvell,nand-keep-config property), the pxa3xx_nand_detect_config() function is called and set the chunk size to 512 as a default value if NDCR_PAGE_SZ is not set. In the other case, when not keeping the bootloader configuration, no chunk size is set. Fix this by adding a default chunk size of 512. Fixes: 70ed85232a93 ("mtd: nand: pxa3xx: Introduce multiple page I/O support") Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com> Acked-by: Robert Jarzmik <robert.jarzmik@free> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-19mtd: omap_elm: Fix module aliasAxel Lin1-1/+1
Remove extra space after the "platform:" prefix and make the alias matches driver name. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-19mtd: physmap_of: fix null pointer deference when kzalloc returns nullColin Ian King1-0/+6
static analysis by smatch caught the following error: drivers/mtd/maps/physmap_of.c:135 of_get_probes() error: potential null dereference 'res'. (kzalloc returns null) Check for failed kzalloc and return -ENOMEM in of_flash_probe if this occurs. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-19mtd: nettel: do not ignore mtd_device_register() failure in nettel_init()Alexey Khoroshilov1-3/+10
If mtd_device_register() fails in nettel_init(), iomap left mapped. The patch adds failure handling for mtd_device_register(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-19mtd: denali_pci: switch to dev_err()Andy Shevchenko1-4/+4
It is better to have device name prefixed the actual error message. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-19mtd: denali_pci: refactor driver using devres APIAndy Shevchenko1-17/+6
In recent kernels we have a lot of helper functions, including devres API, to make life of device driver developer easy. Convert the driver using devm_kzalloc() and pcim_enable_device(). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-19mtd: denali_pci: use module_pci_driver() macroAndy Shevchenko1-11/+1
Let's use module_pci_driver() macro to reduce code base of the driver. There is no functional change. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-19mtd: denali: hide core part from user in KconfigAndy Shevchenko1-8/+5
There is no need to user to see the core part of the driver. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-14mtd: spi-nor: add Spansion S25FL204K supportAntony Pavlov1-0/+1
Spansion S25FL204K is a 4-Mbit 3.0V Serial Flash Memory with Uniform 4 kB Sectors. Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Acked-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-14mtd: spi-nor: Improve Kconfig help text for SPI_FSL_QUADSPIFabio Estevam1-1/+2
The current "We only connect the NOR to this controller now." text is not very clear, so explain it better by saying that generic SPI is not supported by SPI_FSL_QUADSPI and only SPI NOR is. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-14mtd: spi-nor: add driver for NXP SPI Flash Interface (SPIFI)Joachim Eastwood3-0/+494
Add SPI-NOR driver for the SPI Flash Interface (SPIFI) controller that is found on newer NXP MCU devices. The controller supports serial SPI Flash devices with 1-, 2- and 4-bit width in either SPI mode 0 or 3. The controller can operate in either command or memory mode. In memory mode the Flash is exposed as normal memory and can be directly accessed by the CPU. Signed-off-by: Joachim Eastwood <manabian@gmail.com> Reviewed-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-14nand: pxa3xx: Increase initial buffer sizeEzequiel Garcia1-6/+9
The initial buffer is used for the initial commands used to detect a flash device (STATUS, READID and PARAM). ONFI param page is 256 bytes, and there are three redundant copies to be read. JEDEC param page is 512 bytes, and there are also three redundant copies to be read. Hence this buffer should be at least 512 x 3. This commits rounds the buffer size to 2048. Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-11arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> insteadDan Williams3-3/+3
Preparation for uniform definition of ioremap, ioremap_wc, ioremap_wt, and ioremap_cache, tree-wide. Acked-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2015-08-08fsl_ifc: Change IO accessor based on endiannessJaiprakash Singh1-128/+130
IFC IO accressor are set at run time based on IFC IP registers endianness.IFC node in DTS file contains information about endianness. Signed-off-by: Jaiprakash Singh <b44839@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com> Acked-by: Brian Norris <computersforpeace@gmail.com>
2015-08-08mtd: brcmnand: Fix misuse of IS_ENABLEDAxel Lin1-2/+2
While IS_ENABLED() is perfectly fine for CONFIG_* symbols, it is not for other symbols such as __BIG_ENDIAN that is provided directly by the compiler. Switch to use CONFIG_CPU_BIG_ENDIAN instead of __BIG_ENDIAN. Fixes: 27c5b17cd1b1 ("mtd: nand: add NAND driver "library" for Broadcom STB NAND controller") Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-06mtd: spi-nor: fsl-quadspi: fix unsupported cmd when run flash_eraseFrank Li1-8/+4
Erase function will use cmd 0x20 (SPINOR_OP_BE_4K) if kenrel enable option CONFIG_MTD_SPI_NOR_USE_4K_SECTORS. This command is not in fsl-quadspi driver LUT. So driver continue report fsl-quadspi 21e0000.qspi: Unsupported cmd 0x20. This patch fix this issue. Signed-off-by: Frank Li <Frank.Li@freescale.com> Acked-by: Han Xu <Han.xu@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-06mtd: spi-nor: fsl-quadspi: reset the module in the probeFrank Li1-0/+8
The uboot may run the QuadSpi controler with command: #sf probe So we should reset the module in the probe. This patch also clear the pending interrupts which arised by the uboot code. Signed-off-by: Huang Shijie <shijie8@gmail.com> Signed-off-by: Frank Li <Frank.Li@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-06mtd: spi-nor: fsl-quadspi: workaround qspi can't wakeup from wait modeFrank Li1-5/+21
QSPI1 cannot wake up CCM from WAIT mode on SX ARD board, add pmqos to let PM NOT enter WAIT mode when accessing QSPI1, refer to TKT245618. Signed-off-by: Frank Li <Frank.Li@freescale.com> Signed-off-by: Han Xu <Han.xu@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-06mtd: spi-nor: fsl-quadspi: i.MX6SX: fixed the random QSPI access failed issueAllen Xu1-25/+56
We found there is a low probability(5%) QSPI access timeout issue, usually it happened on kernel boot stage, the first time kernel tried to access QSPI chip. The READ_ID command was sent but not executed, consequently the probe function failed. The root cause is that the divider is not glitchless in i.MX6SX chip. If qspi clock enabled then change clock frequency by call clk_set_rate, there will be glitch at low possiblity rate and pass to qspi controller. The controler will be hang by this glitch. Based on the new clock flag(CLK_SET_RATE_GATE) and new framework, we need to change the approach of seting clock rate. 1. Disable clock. 2. call clk_set_rate. 3. Enable clock again. Signed-off-by: Han Xu <han.xu@freescale.com> Signed-off-by: Frank Li <Frank.Li@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-06mtd: spi-nor: fsl-quadspi: add i.mx6ul supportFrank Li1-0/+11
Add i.mx6ul chip support Signed-off-by: Frank Li <Frank.Li@freescale.com> Acked-by: Han xu <han.xu@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-06mtd: spi-nor: fsl-quadspi: add imx7d supportFrank Li1-0/+26
Support i.mx7d. quadspi in i.mx7d increase rxfifo. require fill at least 16byte to trigger data transfer. Signed-off-by: Frank Li <Frank.Li@freescale.com> Signed-off-by: Han Xu <han.xu@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-06mtd: spi-nor: fsl-quadspi: use quirk to distinguish different qspi versionHan Xu1-8/+16
add several quirk to distinguish different version of qspi module. Signed-off-by: Han Xu <han.xu@freescale.com> Signed-off-by: Frank Li <Frank.Li@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-08-06mtd: spi-nor: fsl-quadspi: dynamically map memory space for AHB readHan Xu1-7/+48
QSPI may failed to map enough memory (256MB) for AHB read in previous implementation, especially in 3G/1G memory layout kernel. Dynamically map memory to avoid such issue. This implementation generally map QUADSPI_MAX_IOMAP (default 4MB) memory for AHB read, it should be enough for common scenarios, and the side effect (0.6% performance drop) is minor. Previous implementation root@imx6qdlsolo:~# dd if=/dev/mtd0 of=/dev/null bs=1K count=32K 32768+0 records in 32768+0 records out 33554432 bytes (34 MB) copied, 2.16006 s, 15.5 MB/s root@imx6qdlsolo:~# dd if=/dev/mtd0 of=/dev/null bs=32M count=1 1+0 records in 1+0 records out 33554432 bytes (34 MB) copied, 1.43149 s, 23.4 MB/s After applied the patch root@imx6qdlsolo:~# dd if=/dev/mtd0 of=/dev/null bs=1K count=32K 32768+0 records in 32768+0 records out 33554432 bytes (34 MB) copied, 2.1743 s, 15.4 MB/s root@imx6qdlsolo:~# dd if=/dev/mtd0 of=/dev/null bs=32M count=1 1+0 records in 1+0 records out 33554432 bytes (34 MB) copied, 1.43158 s, 23.4 MB/s Signed-off-by: Han Xu <han.xu@freescale.com> Signed-off-by: Frank Li <Frank.Li@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-07-21mtd: m25p80: allow arbitrary OF matching for "jedec,spi-nor"Brian Norris2-11/+15
When we added the "jedec,spi-nor" compatible string for use in this driver, we added it as a modalias option. The modalias can be derived in different ways for platform devices vs. device tree (of_*) matching. But for device tree matching (the primary target of this identifier string), the modalias is determined from the first entry in the 'compatible' property. IOW, the following properties would bind to this driver: // Option (a), modalias = "spi-nor" compatible = "jedec,spi-nor"; // Option (b), modalias = "spi-nor" compatible = "idontknowwhatimdoing,spi-nor"; But the following would not: // Option (c), modalias = "shinynewdevice" compatible = "myvendor,shinynewdevice", "jedec,spi-nor"; So, we'd like to match (a) and (c) (even when we don't have an explicit entry for "shinynewdevice"), and we'd rather not allow (b). To do this, we (1) always (for devices without specific platform data) pass the modalias to the spi-nor library; (2) rework the spi-nor library to not reject "bad" names, and instead just fall back to autodetection; and (3) add the .of_match_table to properly catch all "jedec,spi-nor". This allows (a) and (c) without warnings, and rejects (b). Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-07-20mtd: nand: sunxi: Set serial access mode correctlyRoy Spliet1-5/+12
Replaces the hard coded "always use EDO" policy with that prescribed by the ONFI 3.1 specification that EDO mode should always be used if tRC is below 30ns. Signed-off-by: Roy Spliet <r.spliet@ultimaker.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-07-20mtd: nand: sunxi: Replace failsafe timing cfg with calculated valueRoy Spliet1-5/+68
The TIMING_CFG register was previously statically set to a magic value (extracted from Allwinner's BSP) when initializing the NAND controller. Now that we have more details about the TIMING_CFG register layout (extracted from the A83 user manual) we can dynamically calculate the appropriate value for each NAND chip and set it when selecting the chip. Signed-off-by: Roy Spliet <r.spliet@ultimaker.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-07-20mtd: spi-nor: set SECT_4K for n25q064 SPI flashAlexey Firago1-1/+1
Micron n25q064 flash supports 4 KiB erase sectors. Signed-off-by: Alexey Firago <alexey_firago@mentor.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-07-20mtd: fsl-quadspi: Actually clear TX FIFO upon writeAlexander Stein1-1/+1
QUADSPI_MCR_CLR_TXF_MASK is the correct mask for clearing the TX FIFO. Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-07-20mtd: r852: make ecc_reg 32-bit in r852_ecc_correctNicolas Iooss1-1/+1
r852_ecc_correct() reads a 32-bit register into a 16-bit variable, ecc_reg, but this variable is later used as if it was larger. This is reported by clang when building the kernel with many warnings: drivers/mtd/nand/r852.c:512:11: error: shift count >= width of type [-Werror,-Wshift-count-overflow] ecc_reg >>= 16; ^ ~~ Fix this by making ecc_reg 32-bit, like the return type of r852_read_reg_dword(). Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-07-20nand: davinci: add support for 4K page size nand devicesSandeep Paulraj1-11/+31
It is needed for k2l keystone2 EVM which uses NAND flash with 4K page size, hence add support for 4K page size nand devices. [Brian: similar work submitted by Murali Karicheri <m-karicheri2@ti.com> and Hao Zhang <hzhang@ti.com>] Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-07-17block: have drivers use blk_queue_max_discard_sectors()Jens Axboe1-1/+1
Some drivers use it now, others just set the limits field manually. But in preparation for splitting this into a hard and soft limit, ensure that they all call the proper function for setting the hw limit for discards. Reviewed-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2015-07-07mtd: nandsim: fix double freeshengyong1-18/+7
Do not call free_device() in init_nandsim, the caller - ns_init_module - will take care of that if something goes wrong. Signed-off-by: Sheng Yong <shengyong1@huawei.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
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