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2010-10-25mtd: r852: remove useless pci powerup/down from suspend/resume routinesMaxim Levitsky2-31/+1
It turns out that pci core now handles these, so this code is redundant and can even cause bugs Signed-off-by: Maxim Levitsky <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: blktrans: fix a race vs kthread_stopMaxim Levitsky1-0/+4
There is small race window that could make kthread_stop hang forever. I found that while hacking the IR subsystem. Signed-off-by: Maxim Levitsky <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: blktrans: kill BKLMaxim Levitsky1-6/+0
It not needed, because I already added locking for all fops methods. Signed-off-by: Maxim Levitsky <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: allow to unload the mtdtrans module if its block devices aren't openMaxim Levitsky1-28/+24
Now it once again possible to remove mtdtrans module. You still need to ensure that block devices of that module aren't mounted. This is due to the fact that as long as a block device is open, it still exists, therefore if we were to allow module removal, this block device might became used again. This time in addition to code review, I also made the code pass some torture tests like module reload in a loop + read in a loop + card insert/removal all at same time. The blktrans_open/blktrans_release don't take the mtd table lock because: While device is added (that includes execution of add_mtd_blktrans_dev) the lock is already taken Now suppose the device will never be removed. In this case even if we have changes in mtd table, the entry that we need will stay exactly the same. (Note that we don't look at table at all, just following private pointer of block device). Now suppose that someone tries to remove the mtd device. This will be propagated to trans driver which _ought_ to call del_mtd_blktrans_dev which will take the per device lock, release the mtd device and set trans->mtd = NULL. >From this point on, following opens won't even be able to know anything about that mtd device (which at that point is likely not to exist) Also the same care is taken not to trip over NULL mtd pointer in blktrans_dev_release. Signed-off-by: Maxim Levitsky <[email protected]> Tested-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: maps: gpio-addr-flash: fix warnings and make more portableMike Frysinger1-3/+7
As reported on lkml, building this module for HIMEM systems spews warnings about mismatch in pointer types. Further, we need to use ioremap() in order to properly access the flash memory on most systems rather than just doing it directly. Reported-by: Alan Cox <[email protected]> Signed-off-by: Mike Frysinger <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: Blackfin NFC: fix badblock location with BootROM OOBMike Frysinger1-10/+4
The bbt structure isn't actually used, just the badblockpos. This lets the driver correctly handle badblocks with the different OOB layout with certain sized flashes. Previously, the blocks would all be reported as bad and be completely unusable. Signed-off-by: Mike Frysinger <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: cfi_cmdset_0002: code cleanupsWolfram Sang1-39/+8
- remove disabled code (hasn't been touched since the beginning of git and should be reimplemented if really needed) - convert remaining c++-comments to plain c-style Signed-off-by: Wolfram Sang <[email protected]> Acked-by: Guillaume LECERF <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: onenand: fix 4KiB page onenand chip recognitionRoman Tereshonkov1-2/+3
For 4Gib non-DDP chip it does not follow that it is always 4KiB page chip. The number of data buffers is checked and if it is equal to 1 we suppose that it is 4KiB page onenand chip. Signed-off-by: Roman Tereshonkov <[email protected]> Acked-by: Kyungmin Park <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: physmap_of: Loop through all "reg" tuples for mappingStefan Roese1-3/+5
This patch changes the loop over the "reg" tuples to not exit directly upon of_address_to_resource() failure but to continue with the next "reg" tuple instead. This failure could be due to size = 0, which might be passed via the device-tree. This is needed for boards, where a "reg" tuple might have size 0 (of_address_to_resource() returns with EINVAL when size = 0). Example: Fully equipped board: reg = <0 0x00000000 0x00400000 0 0x00400000 0x00400000>; Partially equipped board: reg = <0 0x00000000 0x00400000 0 0x00400000 0x00000000>; This could be the case on boards with runtime detection of multiple NOR flash configurations where the detected flash size is inserted into the dtb in U-Boot. Signed-off-by: Stefan Roese <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25jffs2: Reduce excessive scan of empty blocksJoakim Tjernlund1-6/+6
Scanning 1024 bytes to see if an EB is empty is a bit much. Lower it to 256 bytes and make sure the while loop is optimized. Signed-off-by: Joakim Tjernlund <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25jffs2: Fix serious write stall due to eraseJoakim Tjernlund1-3/+4
Drop the alloc_sem before erasing flash in jffs2_garbage_collect_pass(). Otherwise writes are put on hold until the erase has finised. Signed-off-by: Joakim Tjernlund <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: omap2: fix static declaration warningG, Manjunath Kondaiah1-2/+2
This patch fixes sparse warning for static declaration of variable "use_dma" drivers/mtd/nand/omap2.c:114:11: warning: symbol 'use_dma' was not declared. Should it be static? Signed-off-by: G, Manjunath Kondaiah <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25jffs2: Dynamically choose inocache hash sizeDaniel Drake5-7/+29
When JFFS2 is used for large volumes, the mount times are quite long. Increasing the hash size provides a significant speed boost on the OLPC XO-1 laptop. Add logic that dynamically selects a hash size based on the size of the medium. A 64mb medium will result in a hash size of 128, and a 512mb medium will result in a hash size of 1024. Signed-off-by: Daniel Drake <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: remove junk tabs in nand.hSebastian Andrzej Siewior1-168/+147
Remove tabs between type and name. Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: cleanup nand.hSebastian Andrzej Siewior1-56/+99
- *var instead of * var - proper multiline comment - func(args) instead of func (args) - 80 lines So from |total: 2 errors, 37 warnings, 654 lines checked we got to one warning. Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: Fix endianness issues from device treeIan Munsie5-20/+20
This patch adds the appropriate conversions to correct the endianness issues in the MTD driver whenever it accesses the device tree (which is always big endian). Signed-off-by: Ian Munsie <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: m25p80.c: Add support for S25FL032P spi-nor flash devices.David Jander1-0/+1
Signed-off-by: David Jander <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: nandsim: add module param for BBT handlingSebastian Andrzej Siewior1-2/+17
I used this to check the BBT on flash together with a hack in mtdchar in order to read bad blocks. Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: nand: introduce NAND_CREATE_EMPTY_BBTSebastian Andrzej Siewior3-2/+5
it will create an empty BBT table without considering vendor's BBT information. Vendor's information may be unavailable if the NAND controller has a different DATA & OOB layout or this information may be allready purged. Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: nand: add support for BBT without OOBSebastian Andrzej Siewior3-28/+213
The first (sixt) byte in the OOB area contains vendor's bad block information. During identification of the NAND chip this information is collected by scanning the complete chip. The option NAND_USE_FLASH_BBT is used to store this information in a sector so we don't have to scan the complete flash. Unfortunately the code stores a marker in order to recognize the BBT in the OOB area. This will fail if the OOB area is completely used for ECC. This patch introduces the option NAND_USE_FLASH_BBT_NO_OOB which has to be used with NAND_USE_FLASH_BBT. It will then store BBT on flash without touching the OOB area. The BBT format on flash remains same except the first page starts with the recognition pattern followed by the version byte. This change was tested in nandsim and it looks good so far :) Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: nand: pull in td into read_bbt()Sebastian Andrzej Siewior1-7/+9
No code change. Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: nand: use ALIGN where possibleSebastian Andrzej Siewior1-2/+1
Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: OneNAND: S5PC210 OneNAND supportKyungmin Park1-3/+4
S5PC210 has the same OneNAND controller as S5PC110 Signed-off-by: Kyungmin Park <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: OneNAND: S5PC110: Implement DMA interrupt methodKyungmin Park1-1/+84
Implement DMA interrupt method. previous time it polls the DMA status. It can reduce the CPU power but decrease the performance a little. Signed-off-by: Kyungmin Park <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: OneNAND: S5PC110: Fix wrong DMA handling when HIGHMEMKyungmin Park1-11/+18
When use HIGHMEM, dma_map_single doesn't get the proper DMA address. So use the dma_map_page in this case. Signed-off-by: Kyungmin Park <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: OneNAND: S5PC100: Only S5PC110 use the command map methodKyungmin Park1-2/+2
After S5PC110 use the generic method for OneNAND. Signed-off-by: Kyungmin Park <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: MLC device check in OneNAND driverRohit Hassan Sathyanarayan1-1/+1
The MLC NAND Flash differs from the SLC NAND flash in functioning and the cell structure. Therefore we are considering it as a different Flash type. Signed-off-by: Rohit H.S <[email protected]> Signed-off-by: Raghav Gupta <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: Define MLC Flash as a different flash typeRohit Hassan Sathyanarayan1-0/+1
MLC NAND Flash has a different cell structure and differs in functioning than the SLC NAND Flash. Hence we are considering it as a different Flash type. Signed-off-by: Rohit H.S <[email protected]> Signed-off-by: Raghav Gupta <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: OneNAND: S5PC110: Add timeout to prevent the endless loopKyungmin Park1-1/+10
There's no case timeout but add it for some H/W problem or wrong codes implementation Signed-off-by: Kyungmin Park <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: add init_size hook for NAND driverHuang Shijie2-2/+10
Not all the NAND devices have all the information in additional id bytes. So add a hook in the nand_chip{} is a good method to calculate the right value of oobsize, erasesize and so on. Without the hook,you will get the wrong value, and you have to hack in the ->scan_bbt() to change the wrong value which make the code mess. Signed-off-by: Huang Shijie <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25jffs2: drop unused model argumentMike Frysinger6-22/+15
The jffs2 compression framework provides a "model" argument when compressing and decompressing, but the caller always passes in NULL and the callees never use it. So punt this useless overhead. Signed-off-by: Mike Frysinger <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: add BLKPG API based repartition supportRoman Tereshonkov1-2/+58
Add support for mtd repartition based on the block device BLKPG interface: BLKPG_ADD_PARTITION - for partition creation; BLKPG_DEL_PARTITION - for partition delete The usage is based on BLKPG ioctl called with struct blkpg_ioctl_arg argument which includes the reference to struct blkpg_partition discribing the partition offset and length. Disadvantage: there is no implementation for mtd flags control. The flags are always borrowed from the master device. Signed-off-by: Roman Tereshonkov <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: prepare partition add and del functions for ioctl requestsRoman Tereshonkov2-18/+141
mtd_is_master, mtd_add_partition and mtd_del_partition functions are added to give the possibility of partition manipulation by ioctl request. The old partition add function is modified to fit the dynamic allocation. Signed-off-by: Roman Tereshonkov <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25ARM: platform data to use the FSMC NAND with the U300Linus Walleij3-10/+45
Just as it says, if this is merged along with the other patch, the driver supports the U300 NAND flash interface. Signed-off-by: Linus Walleij <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: generic FSMC NAND MTD driverLinus Walleij4-0/+1055
This is the same driver submitted by ST Micros SPEAr team but generalized and tested on the ST-Ericsson U300. It probably easily works on the NHK8815 too. Signed-off-by: Vipin Kumar <[email protected]> Signed-off-by: Rajeev Kumar <[email protected]> Signed-off-by: Shiraz Hashim <[email protected]> Signed-off-by: Viresh Kumar <[email protected]> Signed-off-by: Linus Walleij <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25jffs2: use cond_resched() instead of yield()Wolfram Sang1-1/+1
yield() has different semantics meanwhile and even causes RT-kernels to BUG. Replace the only appearance left in jffs2. Signed-off-by: Wolfram Sang <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: m25p80: Add support for the Winbond W25Q64Thierry Reding1-0/+1
This patch adds support for the Winbond W25Q64 serial flash. Signed-off-by: Thierry Reding <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: nand_base: do not cache pages with uncorrectable ECC errorsArtem Bityutskiy1-1/+2
Currently MTD caches the last read NAND page, even if there was an uncorrectable ECC error. This patch prevents caching in case of uncorrectable ECC errors. The reason is that we want to allow the user to re-read the NAND page several times. In case of unstable bits re-trying may help. Moreover, current behavior is wrong because the first read returns -EBADMSG (correctly) but the second read succeeds and incorrectly returns 0 (because we read from the cache). Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-25mtd: add Broadcom BCM63xx image tag partition parserFlorian Fainelli4-0/+378
This patch adds support for parsing Broadcom BCM63xx image tag format and creating MTD partitions accordingly. This driver is a platform_device which can be instantiated accordingly by bcm63xx board support code. Signed-off-by: Daniel Dickinson <[email protected]> Signed-off-by: Mike Albon <[email protected]> Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-24mtd: sanity check ioctl inputDan Carpenter1-0/+3
If "ur_idx" is wrong we could go past the end of the array. The "ur_idx" comes from root so it's not a huge deal, but adding a sanity check makes the code more robust. Signed-off-by: Dan Carpenter <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-24mtd: fix the build warning for fsl_upm.cRoy Zang1-1/+1
Fix the build warning: drivers/mtd/nand/fsl_upm.c: In function 'fun_chip_init': drivers/mtd/nand/fsl_upm.c:190: warning: format '%x' expects type 'unsigned int', but argument 3 has type 'resource_size_t' Signed-off-by: Roy Zang <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-24mtd: fix almost all checkpatch warnings in nand_base.cFlorian Fainelli1-30/+43
Only 3 warnings are left, one is off by one character, but splitting the line would reduce the readability. One is for a for loop statement, which would also not improve readability. The last one is a false positive on a test. Artem: it is much easier to verify patches against nand_base.c with checkpatch.pl when nand_base.c itself does not have so many checkpatch.pl warnings. Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-24mtd: fix all checkpatch errors in nand_base.cFlorian Fainelli1-23/+26
Artem: it is much easier to verify patches against nand_base.c with checkpatch.pl when nand_base.c itself does not have so many checkpatch.pl warnings. Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-24mtd: davinci: relax a timeout for ECC-initializationWolfram Sang1-1/+2
Sudhakar found out that 100µs are enough. Sadly, his updated patch was overlooked and an older version still using 100ms was merged. Fix this. Reference: http://patchwork.ozlabs.org/patch/59180/ Signed-off-by: Wolfram Sang <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-24mtd: m25p80: Add support for two new Spansion SPI devices (S25FL-K)Gernot Hoyler1-0/+2
This patch adds support for Spansion S25FL016K and S25FL064K SPI flash. It has been tested with physical devices. Note that both parts exhibit a Winbond manufacturer ID so they might also be added to that section. Signed-off-by: Gernot Hoyler <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-24mtd: nand: split ONFI detection logic to its own functionFlorian Fainelli1-61/+71
In order to reduce the indentation and improve the readability of nand_get_ flash_type, split the ONFI detection logic to its own function. The detection logic inside nand_flash_detect_onfi is also rewritten to allow for less indentation. Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: Artem Bityutskiy <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-24mtd: nand: add support for reading ONFI parameters from NAND deviceFlorian Fainelli2-30/+202
This patch adds support for reading NAND device ONFI parameters and use the ONFI informations to define its geometry. In case the device supports ONFI, the onfi_version field in struct nand_chip contains the version (BCD) and the onfi_params structure can be used by drivers to set up timings and such. We currently only support ONFI 1.0 parameters. Signed-off-by: Brian Norris <[email protected]> Signed-off-by: Matthieu Castet <[email protected]> Signed-off-by: Maxime Bizon <[email protected]> Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-24mtd: nand: denali should also handle NAND_CMD_PARAMFlorian Fainelli1-0/+1
Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-24mtd: nand: add NAND_CMD_PARAM (0xec) definitionFlorian Fainelli1-0/+1
This command is used to read the device ONFI parameters page. Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
2010-10-24mtd: OneNAND: Remove unused cmd_map at s5pc110Kyungmin Park1-1/+0
S5PC110 OneNAND controller use the generic functions provided from onenand_base. Signed-off-by: Kyungmin Park <[email protected]> Signed-off-by: David Woodhouse <[email protected]>
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