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2010-03-21mtd/maps/pismo: remove dangling pointer and a leakWolfram Sang1-1/+7
While looking for drivers which forgot to clear i2c_clientdata before freeing the data structure it points to, I found that the pismo driver even has a leak on the probe error path. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-03-18mtd: block2mtd: Use kasprintfJulia Lawall1-3/+1
kasprintf combines kmalloc and sprintf, and takes care of the size calculation itself. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression a,flag; expression list args; statement S; @@ a = - \(kmalloc\|kzalloc\)(...,flag) + kasprintf(flag,args) <... when != a if (a == NULL || ...) S ...> - sprintf(a,args); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-03-18mtd: small typo in MakefileMatteo Croce1-1/+1
Cosmetic fix: the path in the Makefile is wrong Signed-off-by: Matteo Croce <matteo@teknoraver.net> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-03-11mtd/nand/r852: Use pci_dma_mapping_error()David Woodhouse1-1/+1
... instead of comparing with DMA_ERROR_CODE, which will only work on powerpc/sparc/x86. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-03-11mtd/nand/r852: fix build for CONFIG_PCI disabledRandy Dunlap2-0/+2
r852 fails to build when CONFIG_PCI is not enabled since it uses pci_*() calls and is a PCI driver, so it should depend on PCI to prevent build errors. It should also #include <linux/pci.h>. drivers/mtd/nand/r852.c:1053: error: implicit declaration of function 'pci_prepare_to_sleep' drivers/mtd/nand/r852.c:1062: error: implicit declaration of function 'pci_back_from_sleep' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-03-09mtd: blktrans: do blk_cleanup_queue when it is really safe to do soMaxim Levitsky1-1/+1
I was calling it in del_mtd_blktrans_dev, but ->request_fn could still be running at that point, thus defer this call to blktrans_dev_release Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-03-09mtd: Make SM_FTL depend on MTD_NANDDavid Woodhouse1-5/+5
Randy Dunlap observed a build problem with the following config: CONFIG_SM_FTL=y CONFIG_SM_FTL_MUSEUM=y CONFIG_MTD_NAND=m The ECC calculation routines are then built as a module, but referenced by the sm_ftl code in the kernel, resulting in a build failure. The simple fix is to make CONFIG_SM_FTL depend on MTD_NAND unconditionally -- it's pointless without hardware support anyway. Fix some typos which Randy pointed out, too. Reported-By: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-03-09mtd: nand: r852: declare inline functions staticStephen Rothwell1-3/+3
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-03-09mtd: nand: r852: fix name space clashStephen Rothwell1-4/+5
and include delay.h for msleep(). Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-03-09mtd/nand/r852: fix build for CONFIG_PM=nRandy Dunlap1-0/+5
Fix r852 build for the case of CONFIG_PM=n. drivers/mtd/nand/r852.c:1039: error: implicit declaration of function 'pci_prepare_to_sleep' drivers/mtd/nand/r852.c:1048: error: implicit declaration of function 'pci_back_from_sleep' This patch leaves r852_pm_ops untouched. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-03-09mtd: r852: Few fixes for problems that occur when card is rapidly ↵Maxim Levitsky1-4/+17
inserted/removed. First don't enable card detection logic to early. Second be very careful with DMA engine, to be sure it doesn't write to kernel memory driver doesn't own. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-27mtd: r852 fix pci IDMaxim Levitsky1-1/+1
The PCI_DEVICE_ID_RICOH_R5C852 was missed in the edited commit, and on second thought I just open code it. This fixes compile error. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: Few follow up cleanups for Smartmedia/xD supportMaxim Levitsky4-12/+18
* Test results of few functions that were declared with __must_check * Fix bogus gcc warning about uinitialized variable 'ret' * Remove unused variable from mtdblock_remove_dev * Don't use deprecated DMA_32BIT_MASK Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: nand: Add driver for Ricoh xD/SmartMedia readerMaxim Levitsky4-0/+1292
This adds a driver for Ricoh R5C852 xD card reader. This reader is a part of larger mulifunction chip and found at least in R5C832 Driver is complete, but bewere of the fact that some (probably only type M) xD cards are 'fake' which means that they have an on board CPU and expose emulated nand command set These cards don't even store the oob area on the flash, but generate it on the fly from something else. Thus they demand to have proper values written in the oob area, and therefore only useful with SmartMedia FTL. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: Add new SmartMedia/xD FTLMaxim Levitsky4-0/+1400
This implements new readwrite SmartMedia/xd FTL. mtd driver must have support proper ECC and badblock verification based on oob parts for 512 bytes nand. Also mtd driver must define read_oob and write_oob, which are used to read and write both data and oob together. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26Merge branch 'master' of ↵David Woodhouse1232-20321/+71594
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 The SmartMedia FTL code depends on new kfifo bits from 2.6.33
2010-02-26mtd: nand: Add SmartMedia device table to sm_common moduleDavid Woodhouse2-7/+38
(and remove the CONFIG_MTD_NAND_SMARTMEDIA option which isn't going to be used now that we're doing it this way) Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: Workaround wrong write protect status on some xD cardsMaxim Levitsky1-1/+7
Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: nand: Allow caller to pass alternative ID table to nand_scan_ident()David Woodhouse12-25/+27
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: common module for smartmedia/xD supportMaxim Levitsky4-0/+178
This small module implements few helpers that are usefull for nand drivers for SmartMedia/xD card readers. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: nand: add ->badblockbits for minimum number of set bits in bad block byteMaxim Levitsky1-4/+9
This can be used to protect against bitflips in that field, but now mostly for smartmedia. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: nand: make reads using MTD_OOB_RAW affect only ECC validationMaxim Levitsky2-16/+29
This changes the behavier of MTD_OOB_RAW. It used to read both OOB and data to the data buffer, however you would still need to specify the dummy oob buffer. This is only used in one place, but makes it hard to read data+oob without ECC test, thus I removed that behavier, and fixed the user. Now MTD_OOB_RAW behaves just like MTD_OOB_PLACE, but doesn't do ECC validation Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: nand: cleanup the nand_do_write_opsMaxim Levitsky1-7/+17
nand_do_write_ops was broken in regard to writing several pages, each with its own oob. Although nand_do_write_ops intends to allow such mode, it fails do do so Probably this was never tested. Also add missing checks for attempts to write at illegal offsets. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: nand: make MTD_OOB_PLACE work correctly.Maxim Levitsky1-1/+5
MTD_OOB_PLACE is supposed to read/write the raw oob data similiar to the MTD_OOB_RAW however due to a bug, currently it is not possible to read more data that is specified by the oob 'free' regions. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: nand: make suspend work if device is accessed by kernel threads.Maxim Levitsky1-3/+0
Since all userspace threads are frozen at the time the nand_suspend is called, they aren't inside any nand function. We don't call try_to_freeze in nand ether. Thus the only user that can be inside the nand functions is an non freezeable kernel thread. Thus we can safely wait for it to finish. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: blktrans: allow FTL drivers to export sysfs attributesMaxim Levitsky1-0/+8
This patch adds an ability to export sysfs attributes below the block disk device. This can be used to pass the udev an information about the FTL and could include the vendor, serial, version, etc... Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: call the remove notifiers before assuming it is in useMaxim Levitsky1-8/+11
Now that mtd block common layer is prepared for proper hotplug support, enable it here Now all users of the mtd device have a chance to put the mtd device when they are notified to do so, and they have to do so to make hotplug work. [dwmw2: There's more work to be done to fix hotplug in the general case, but this is a reasonable start] Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: mtdblock: test return value of add_mtd_blktrans_dev, because if can failMaxim Levitsky2-2/+4
This prevents a memory leak Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: blktrans: Hotplug fixesMaxim Levitsky8-62/+148
* Add locking where it was missing. * Don't do a get_mtd_device in blktrans_open because it would lead to a deadlock; instead do that in add_mtd_blktrans_dev. * Only free the mtd_blktrans_dev structure when the last user exits. * Flush request queue on device removal. * Track users, and call tr->release in del_mtd_blktrans_dev Due to that ->open and release aren't called more that once. Now it is safe to call del_mtd_blktrans_dev while the device is still in use. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: blktrans: remove mtd_blkcore_priv, switch to per device queue and threadMaxim Levitsky1-66/+58
This is the biggest change. To make hotplug possible, and this layer clean, the mtd_blktrans_dev now contains everything for a single mtd block translation device. Also removed some very old leftovers. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: create unlocked versions of {get,put}_mtd_deviceMaxim Levitsky1-21/+39
Use these only if you know that you already hold mtd_table_mutex Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: nand: Add MPC5121 NAND Flash Controller driverAnatolij Gustschin3-0/+924
Adds NAND Flash Controller driver for MPC5121 Revision 2. All device features, except hardware ECC and power management, are supported. Signed-off-by: Piotr Ziecik <kosmo@semihalf.com> Signed-off-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Anatolij Gustschin <agust@denx.de> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: nand_bcm: fix hot spin and code duplicationRoel Kluin1-46/+25
In the branch where pagesize equalled NAND_DATA_ACCESS_SIZE, NumToRead wasn't decremented in the `while (numToRead > 11)' loop. Also the first and last while loops were duplicated in both branches. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Leo Chen <leochen@broadcom.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: omap2 fix prefetch mode read issueVimal Singh1-4/+7
There is a bug in nand prefetch read routine, which comes into effect only if nand device is a 16-bit device (as we have in zoom boards). This bug is effective only with below combination of conditions: 1. nand deivce, in use, is a 16 bit device 2. nand driver supports 'subpage' read 3. SW ECC is in use This was not seen old kernel (ex: .23), because when, in early days, we tested this (nand prefetch read in LDP boards) there was no 'subpage read' support. Later when we had subpage read in (.27) kernel, we had hw ecc enabled always in our internal tree. So, we missed this bug. This patch fixes the issue. Signed-off-by: Vimal Singh <vimalsingh@ti.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: omap2: correct 'info' pointer in 'omap_nand_remove'Vimal Singh1-1/+2
Removing OMAP NAND driver, when loaded as a module, gives error and does not get success. This fixes this and makes driver loadable and removable run time. Signed-off-by: Vimal Singh <vimalsingh@ti.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: omap2: fixing compilation warningVimal Singh1-1/+1
Fixing below warning in compilation: drivers/mtd/nand/omap2.c: In function 'omap_write_buf_dma_pref': drivers/mtd/nand/omap2.c:508: warning: passing argument 2 of 'omap_nand_dma_transfer' discards qualifiers from pointer target type Signed-off-by: Vimal Singh <vimalsingh@ti.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: move more manufacturers to the common cfi.h header fileGuillaume LECERF1-9/+5
Move MANUFACTURER_MACRONIX and MANUFACTURER_SST definitions to the include/linux/mtd/cfi.h header file and rename them to CFI_MFR_MACRONIX and CFI_MFR_SST. All references in drivers/mtd/chips/cfi_cmdset_0002.c are updated to reflect this. Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: mxc_nand: add RESET command supportEric Benard1-0/+1
mxc_nand driver must support the RESET Command in order to support Micron NAND which need a reset before any other command. Signed-off-by: Eric Benard <eric@eukrea.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: inftl: misplaced parenthesis in find_boot_recordRoel Kluin1-3/+4
The parenthesis was misplaced, upon error a one was shown. [dwmw2: Fix the code not to do the assignment within the if() statement] Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: OneNAND: do not use DMA if oops in progressAaro Koskinen1-2/+2
Otherwise we may hang if we are called from panic() through mtdoops. Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: nand: add lock/unlock routinesVimal Singh1-0/+164
Add nand lock / unlock routines. At least 'micron' parts support this. Signed-off-by: Vimal Singh <vimalsingh@ti.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-26mtd: nand: create a helper verification functionVimal Singh1-18/+30
... verification for 'nand_erase_nand' These checks are expected to be used by 'nand_lock' and 'nand_unlock' routines too. As all these three are block aligned operations. So, creating a helper function for this makes sense. Signed-off-by: Vimal Singh <vimalsingh@ti.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: maps: ceiva: do not return random numbersArtem Bityutskiy1-1/+1
When machine_is_ceiva() returns zero, 'clps_setup_flash()' returns a value of an unitialized variable. Fix this. Spotted by David Binderman. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtdchar: Register the full range of minor numbersBen Hutchings1-2/+3
register_chrdev() registers minor numbers up to 255, but we can now potentially have much larger numbers. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: Raise limit on block device minor numbersBen Hutchings1-2/+5
add_mtd_blktrans_dev() imposes a maximum of 257 devices per block translator. This was presumably meant to prevent overflow back in the days of 8-bit minor numbers. Instead, check against MINORMASK and the limits of the partition naming scheme. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: Replace static array of devices with an idr structureBen Hutchings2-82/+81
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: mtdblock: Dynamically allocate cache info structuresBen Hutchings1-43/+31
Since we allocate struct mtd_blktrans_dev for each block device, we can add our own structure members to the end. Therefore embed struct mtd_blktrans_dev in struct mtdblk_dev and remove the static array of struct mtdblk_dev. Also remove the redundant pointer to struct mtd_info. This is preparation for removing the static limit on the number of MTD devices. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: Remove unnecessary comparisons with MAX_MTD_DEVICESBen Hutchings3-10/+2
MAX_MTD_DEVICES is about to be removed. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: nandsim: Define CONFIG_NANDSIM_MAX_PARTS and use it instead of ↵Ben Hutchings1-2/+5
MAX_MTD_DEVICES MAX_MTD_DEVICES is about to be removed. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-02-25mtd: Use get_mtd_device_nm() to find named device in get_sb_mtd()Ben Hutchings1-12/+6
This removes the need to know the number of MTD devices. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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