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| * mtd: bcm_umi_nand: convert to mtd_device_register()Jamie Iles2011-05-251-3/+1Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: atmel_nand: convert to mtd_device_register()Jamie Iles2011-05-251-11/+1Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: uclinux: convert to mtd_device_register()Jamie Iles2011-05-252-11/+3Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: tqm8xll: convert to mtd_device_register()Jamie Iles2011-05-251-15/+5Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: scx200_docflash: convert to mtd_device_register()Jamie Iles2011-05-252-14/+4Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: sa1100-flash: convert to mtd_device_register()Jamie Iles2011-05-252-16/+7Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: rbtx4939-flash: convert to mtd_device_register()Jamie Iles2011-05-251-19/+5Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: plat-ram: convert to mtd_device_register()Jamie Iles2011-05-251-15/+9Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: latch-addr-flash: convert to mtd_device_register()Jamie Iles2011-05-251-28/+17Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: intel_vr_nor: convert to mtd_device_register()Jamie Iles2011-05-251-17/+2Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: impa7: convert to mtd_device_register()Jamie Iles2011-05-251-19/+3Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: h720x-flash: convert to mtd_device_register()Jamie Iles2011-05-251-4/+2Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: gpio-addr-flash: convert to mtd_device_register()Jamie Iles2011-05-252-18/+10Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: edb7312: convert to mtd_device_register()Jamie Iles2011-05-251-18/+8Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: dc21285: convert to mtd_device_register()Jamie Iles2011-05-251-17/+3Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: sst25l: convert to mtd_device_register()Jamie Iles2011-05-251-36/+26Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the check for mtd_has_partitions() as we always have partitioning enabled now. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: dataflash: convert to mtd_device_register()Jamie Iles2011-05-251-27/+18Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: m25p80: convert to mtd_device_register()Jamie Iles2011-05-251-38/+30Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: onenand: convert to mtd_device_register()Jamie Iles2011-05-253-18/+5Star
| | | | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Cc: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: bfin: convert to mtd_device_register()Jamie Iles2011-05-252-17/+5Star
| | | | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Cc: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: pxa: convert to mtd_device_register()Jamie Iles2011-05-253-25/+7Star
| | | | | | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Cc: Cc: David Woodhouse <dwmw2@infradead.org> Cc: Artem Bityutskiy <dedekind1@gmail.com> Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: ixp: convert to mtd_device_register()Jamie Iles2011-05-252-12/+8Star
| | | | | | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Cc: Imre Kaloz <kaloz@openwrt.org> Cc: Krzysztof Halasa <khc@pm.waw.pl> Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: plat_nand: convert to mtd_device_register()Jamie Iles2011-05-251-9/+3Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: nand: convert to mtd_device_register()Jamie Iles2011-05-251-9/+1Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: physmap: convert to mtd_device_register()Jamie Iles2011-05-252-51/+13Star
| | | | | | | | | | | | | | | | | | Convert to mtd_device_register() and remove the CONFIG_MTD_PARTITIONS preprocessor conditionals as partitioning is always available. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: introduce mtd_device_(un)register()Jamie Iles2011-05-251-0/+45
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To prepare for the removal of add_mtd_device and add_mtd_partitions(), introduce mtd_device_register(). This will create partitions if they are supplied or register the whole device if there are no partitions. Once all drivers are converted to use mtd_device_register(), add_mtd_device() and add_mtd_partitions() will be made internal only. v2: move kerneldoc to implementation file and fixup some kerneldoc warnings. Artem: tweak comments: remove junk tabs, use dots consistently. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: always build partitioning supportJamie Iles2011-05-251-10/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | There are very few situations where MTD partitioning is not required, and the benefit in code size reduction by making this configurable does not warrant the level of ifdeffery needed. Artem: this patch is not final - we just make sure that mtd partitions are always compiled in, and at the end of the series we'll kill MTD_PARTITIONS altogether. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd:fix the bad format in the mtdcore.cWanlong Gao2011-05-251-4/+4
| | | | | | | | | | | | | | | | Remove the spare spaces in the head of the lines. Signed-off-by: Wanlong Gao <wanlong.gao@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: mtdswap: fix possible null dereferenceMaxin B. John2011-05-251-1/+7
| | | | | | | | | | | | | | | | | | This patch fixes the possible null dereference of the variable "oinfo" Thanks to Coverity for spotting this. Signed-off-by: Maxin B. John <john.maxin@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: remove duplicate assignment of chip->stateTadashi Abe2011-05-253-3/+0Star
| | | | | | | | | | | | | | | | | | This is a trivial patch which removes unnecessary assignment of chip->state in put_chip(). It's duplicated. Signed-off-by: Tadashi Abe <tabe@mvista.com> Acked-by: Joakim Tjernlund <joakim.tjernlund@transmode.se> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: fix hang-up in cfi erase and read contentionTadashi Abe2011-05-254-15/+6Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | cfi erase command hangs up when erase and read contention occurs. If read runs at the same address as erase operation, read issues Erase-Suspend via get_chip() and the erase goes into sleep in wait queue. But in this case, read operation exits by time-out without waking it up. I think the other variants (0001, 0020 and lpddr) have the same problem too. Tested and verified the patch only on CFI-0002 flash, though. Signed-off-by: Tadashi Abe <tabe@mvista.com> Acked-by: Joakim Tjernlund <joakim.tjernlund@transmode.se> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: simplify get_mtd_device_nm functionWanlong Gao2011-05-251-11/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | 'get_mtd_device_nm()' has a piece of code which equivalent to what '__get_mtd_device()' does - remove this duplicated code and use ''__get_mtd_device()' instead. Artem: changed commit message. Artem: while on it, remove an unnecessary extra empty line Signed-off-by: Wanlong Gao <wanlong.gao@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: be silent when mtd partition parser cannot be foundArtem Bityutskiy2011-05-251-4/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently when we register partitions in 'parse_mtd_partitions()' we accept the list of parsers we should try. And if one of the parsers was not found we print a message. Well, first of all this whole idea is bad - look at how many 'part_probes' and 'part_probe_types' variables we have - nearly every driver defines one. Instead, we should just go through all registered parsers all the time. But this needs to be worked on separately. This patch makes life of MTD partitions' users a bit simpler and allows them to safely request parsers which have not been registered - 'parse_mtd_partitions()' will not print a "not available" message in this case. The point is that drivers do not have to do things like this any longer: static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", "afs", NULL }; but can simply do like this: static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", "afs", NULL }; Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: convert to seq_file interfaceAlexey Dobriyan2011-05-251-31/+19Star
| | | | | | | | | | | | | | | | | | ->read_proc interface is going away, switch to seq_file. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: omap: fix subpage ecc issue with prefetchKishore Kadiyala2011-05-251-7/+5Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When reading/writing a subpage (When HW ECC is not available/enabled) for number of bytes not aligned to 4, the mis-aligned bytes are handled first (by cpu copy method) before enabling the Prefetch engine to/from 'p'(start of buffer 'buf'). Then it reads/writes rest of the bytes with the help of Prefetch engine, if available, or again using cpu copy method. Currently, reading/writing of rest of bytes, is not done correctly since its trying to read/write again to/from begining of buffer 'buf', overwriting the mis-aligned bytes. Read & write using prefetch engine got broken in commit '2c01946c'. We never hit a scenario of not getting 'gpmc_prefetch_enable' call success. So, problem did not get caught up. Signed-off-by: Kishore Kadiyala <kishore.kadiyala@ti.com> Signed-off-by: Vimal Singh <vimal.newwork@gmail.com> Reported-by: Bryan DE FARIA <bdefaria@adeneo-embedded.com> Cc: stable@kernel.org [2.6.35+] Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: sst25l: fix section markingsMike Frysinger2011-05-251-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The previous section mismatch fix for this driver wasn't entirely correct. The sst25l_flash_info array is now used in the devinit probe func, but is marked as initdata, so building results in the warning: WARNING: drivers/mtd/devices/sst25l.o(.devinit.text): Section mismatch in reference from the function sst25l_probe() to the variable .init.data:sst25l_flash_info Further, the remove func should be devexit rather than exit to match the probe func. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: m25p80: Add Spansion S25FL512S, S70FL01GSKevin Cernekee2011-05-251-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | S25FL512S = 64MiB single die, same family as S25FL256S S70FL01GS = 2x S25FL512S dies in one package (separate chip selects) These devices are not sampling yet, but they are expected to be very similar to S25FL256S, which has been tested. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: m25p80: Add Spansion S25FL256SKevin Cernekee2011-05-251-5/+17
| | | | | | | | | | | | | | | | | | | | | | These are 32MiB parts which use a slightly different 4-byte enable sequence from Macronix. Default to the Spansion 4-byte scheme in set_4byte(), as it is more likely to be copied by other vendors. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: m25p80: Clean up JEDEC manufacturer checksKevin Cernekee2011-05-251-4/+7
| | | | | | | | | | | | | | | | | | Use the manufacturer ID names from cfi.h instead of hard-coding hex constants. Introduce a JEDEC_MFR macro for clarity. Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: m25p80: Add Numonyx m25px32 familyKevin Cernekee2011-05-251-1/+4
| | | | | | | | | | | | Signed-off-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: denali: detect the number of banksJamie Iles2011-05-252-9/+21
| | | | | | | | | | | | | | | | | | | | Not all configurations of the Denali controller support 4 banks. The controller can support between 1 and 16 banks. Detect this from the design features register. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: denali: remove nearly-duplicated register definitionsJamie Iles2011-05-252-395/+110Star
| | | | | | | | | | | | | | | | | | | | | | The controller has interrupt enable/status register pairs for each bank (along with ECC and status registers) that differ only in address offset. Rather than providing definitions for each register, make the address a macro so that it scales for devices with different numbers of banks. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: denali: convert to generic DMA APIJamie Iles2011-05-252-44/+40Star
| | | | | | | | | | | | | | | | | | | | Rather than using the PCI specific DMA API, convert to the generic DMA API so that we can use the Denali NAND controller on other bus types. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: onenand: add missing checkjohn.maxin@nokia.com2011-05-251-1/+1
| | | | | | | | | | | | | | | | | | | | Coverity has reported that inside the function "onenand_block_by_block_erase()" in onenand_base.c, we should add a check to prevent the incrementing of possible NULL value for "region" Signed-off-by: Maxin B. John <john.maxin@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: return badblockbits backArtem Bityutskiy2011-05-251-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In commit c7b28e25cb9beb943aead770ff14551b55fa8c79 the initialization of the backblockbits was accidentally removed. This patch returns it back, because otherwise some NAND drivers are broken. This problem was reported by "Saxena, Parth <parth.saxena@ti.com>" here: http://lists.infradead.org/pipermail/linux-mtd/2011-April/035221.html Reported-by: Saxena, Parth <parth.saxena@ti.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Tested-by: Saxena, Parth <parth.saxena@ti.com> Acked-by: Saxena, Parth <parth.saxena@ti.com> Acked-by: Brian Norris <computersforpeace@gmail.com> Cc: stable@kernel.org [2.6.36+] Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: nand: ndfc: add multiple chip select supportFelix Radensky2011-05-251-17/+35
| | | | | | | | | | | | | | | | | | | | | | | | This patch extends NDFC driver to support all 4 chip selects available in NDFC NAND controller. Tested on custom 460EX board with 2 chip select NAND device. Artem: white-space cleanups Signed-off-by: Felix Radensky <felix@embedded-sol.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: mtdchar: retry large buffer allocationsGrant Erickson2011-05-251-27/+23Star
| | | | | | | | | | | | | | | | | | | | | | | | | | Replace direct call to kmalloc for a potentially large, contiguous buffer allocation with one to mtd_kmalloc_up_to which helps ensure the operation can succeed under low-memory, highly- fragmented situations albeit somewhat more slowly. Signed-off-by: Grant Erickson <marathon96@gmail.com> Tested-by: Ben Gardiner <bengardiner@nanometrics.ca> Tested-by: Stefano Babic <sbabic@denx.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: create function to perform large allocationsGrant Erickson2011-05-251-0/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce a common function to handle large, contiguous kmalloc buffer allocations by exponentially backing off on the size of the requested kernel transfer buffer until it succeeds or until the requested transfer buffer size falls below the page size. This helps ensure the operation can succeed under low-memory, highly- fragmented situations albeit somewhat more slowly. Artem: so this patch solves the problem that the kernel tries to kmalloc too large buffers, which (a) may fail and does fail - people complain about this, and (b) slows down the system in case of high memory fragmentation, because the kernel starts dropping caches, writing back, swapping, etc. But we do not really have to allocate a lot of memory to do the I/O, we may do this even with as little as one min. I/O unit (NAND page) of RAM. So the idea of this patch is that if the user asks to read or write a lot, we try to kmalloc a lot, with GFP flags which make the kernel _not_ drop caches, etc. If we can allocate it - good, if not - we try to allocate twice as less, and so on, until we reach the min. I/O unit size, which is our last resort allocation and use the normal GFP_KERNEL flag. Artem: re-write the allocation function so that it makes sure the allocated buffer is aligned to the min. I/O size of the flash. Signed-off-by: Grant Erickson <marathon96@gmail.com> Tested-by: Ben Gardiner <bengardiner@nanometrics.ca> Tested-by: Stefano Babic <sbabic@denx.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: mtdconcat: fix NAND OOB writeFelix Radensky2011-05-251-2/+2
| | | | | | | | | | | | | | | | | | | | | | Currently mtdconcat is broken for NAND. An attemtpt to create JFFS2 filesystem on concatenation of several NAND devices fails with OOB write errors. This patch fixes that problem. Signed-off-by: Felix Radensky <felix@embedded-sol.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Cc: stable@kernel.org Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: omap2: mtd split nand_scan in ident and tailJan Weitzel2011-05-251-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | nand_scan calls nand_scan_tail and here we got a ecc.layout and calculate oobavail for this layout. After calling nand_scan, we change the layout pointer if OMAP_ECC_HAMMING_CODE_HW_ROMCODE is set. This results in not calcluated oobavail. Mountig as jffs2 is not possible. To fix that nand_scan has to split up in nand_scan_ident and nand_scan_tail setting ecc.layout between these calls. So nand_scan_tail calculates oobvail for the used layout. This is also done in serveral other platforms. Signed-off-by: Jan Weitzel <j.weitzel@phytec.de> Reviewed-by: Vimal Singh <vimal.newwork@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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