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2012-09-29mtd: tests: test for multi-bit error correctionIwo Mergler2-0/+461
This tests ECC biterror recovery on a single NAND page. Mostly intended to test ECC hardware and low-level NAND driver. There are two test modes: 0 - artificially inserting bit errors until the ECC fails This is the default method and fairly quick. It should be independent of the quality of the FLASH. 1 - re-writing the same pattern repeatedly until the ECC fails. This method relies on the physics of NAND FLASH to eventually generate '0' bits if '1' has been written sufficient times. Depending on the NAND, the first bit errors will appear after 1000 or more writes and then will usually snowball, reaching the limits of the ECC quickly. The test stops after 10000 cycles, should your FLASH be exceptionally good and not generate bit errors before that. Try a different page offset in that case. Please note that neither of these tests will significantly 'use up' any FLASH endurance. Only a maximum of two erase operations will be performed. Signed-off-by: Iwo Mergler <Iwo.Mergler@netcommwireless.com.au> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: cmdlinepart: make the partitions rule more strictShmulik Ladkani1-1/+11
Huang Shijie <shijie8@gmail.com> explains: Assume we have a 1GiB(8Gib) NAND chip, and we set the partitions in the command line like this: #gpmi-nand:100m(boot),100m(kernel),1g(rootfs) In this case, the partition truncating occurs. The current code will get the following result: ---------------------------------- root@freescale ~$ cat /proc/mtd dev: size erasesize name mtd0: 06400000 00040000 "boot" mtd1: 06400000 00040000 "kernel" ---------------------------------- It is obvious that we lost the truncated partition `rootfs` which should be 824MiB in this case. Also, forbid 0-sized partitions. Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: nand/gpio: Convert to module_platform_driver()Sachin Kamat1-14/+1
module_platform_driver simplifies the code by eliminating module_init and module_exit calls. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: mxc_nand: Adapt the clock name to the new clock frameworkFabio Estevam1-1/+1
With the new i.mx clock framework the mxc_nand clock is registered as: clk_register_clkdev(clk[nfc_gate], NULL, "mxc_nand");0") So we do not need to pass "nfc" string and can use NULL instead. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: mxc_nand: Convert to module_platform_driver()Fabio Estevam1-15/+3
Using module_platform_driver() makes the code smaller and cleaner. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: gpmi-nand: Convert to module_platform_driver()Fabio Estevam1-22/+7
Using module_platform_driver() makes the code smaller and cleaner. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Reviewed-by: Marek Vasut <marex@denx.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: gpmi-nand: Improve logging styleFabio Estevam1-3/+6
Improve logging style by prefixing the pr_ messages with "gpmi_nand". Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: m25p80: Disable 4KiB erase for s25sl032p, s25sl064pMarek Vasut1-2/+2
Quoting from the datasheet for S25FL064P, rev. 05, Nov 18 2011, § 9.17: "A 64 kB[sic] sector erase (D8h) command issued on 4 kB or 8 kB erase sectors will erase all sectors in the specified 64 kB region. However, please note that a 4 kB sector erase (20h) or 8 kB sector erase (40h) command will not work on a 64 kB sector." Referring further to Table 8.1 and Table 8.2, it is clearly seen that most of the sectors are 64KiB; therefore disable this 4KiB erase support since it's valid only on first/last sectors. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: basic (read only) driver for BCMA serial flashRafał Miłecki3-0/+114
This registers MTD driver for serial flash platform device. Right now it supports reading only, writing still has to be implemented. Artem: minor amendments. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: mtd_nandecctest: ensure alignment requirement for bitopsAkinobu Mita1-14/+29
Currently the data blocks which is used to test single bit error correction is allocated statically and injecting single bit error is implemented by using __change_bit() which must operate on the memory aligned to the size of an "unsigned long". But there is no such guarantee for statically allocated array. This fix the issue by allocating the data block dynamically by kmalloc(). It also allocate the ecc code dynamically instead of allocating statically on stack. The reason to allocate the ecc code dynamically is that later change will add tests which inject bit errors into the ecc code by bitops. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: mtd_nandecctest: improve message outputAkinobu Mita1-19/+29
This includes the message related changes: - Use pr_* instead of printk - Print hexdump of ECC code if test fails - Change log level for hexdump of data from KERN_DEBUG to KERN_INFO - Factor out the hexdump code into a separate function Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: mtd_nandecctest: make module_init() return appropriate errnoAkinobu Mita1-1/+1
Return -EINVAL instead of -1 (-EPERM) when test fails. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: mtd_nandecctest: remove unnecessary includeAkinobu Mita1-1/+0
Including linux/jiffies.h was required for calling srandom32(jiffies) that has already been removed. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: autcpu12-nvram: drop frees of devm_ alloc'd dataJulia Lawall1-14/+4
devm free functions should not have to be explicitly used. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: cmdlinepart: minor cleanupsArtem Bityutskiy1-78/+59
Clean-up the driver a bit to make it easier to read and amend the coding style. Mostly these are changes like: if (a) { } => if (a) { } Some extra blank lines were added. Indentation was changed to use tabs instead of spaces. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: cmdlinepart: revise error handlingArtem Bityutskiy1-16/+18
This patch revises and fixes error handling in the command line mtd partitions parser. Namely: 1. we ignored return code of 'mtdpart_setup_real()'. 2. instead of returning 0 for failure and 1 for success, teach 'mtdpart_setup_real()' to return real error codes. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: bcm47part driver for BCM47XX chipsetsRafał Miłecki3-0/+210
This driver provides parser detecting partitions on BCM47XX flash memories. It has many differences in comparison to BCM63XX, like: 1) Different CFE with no more trivial MAGICs 2) More partitions types (board_data, ML, POT) 3) Supporting more than 1 flash on a device which resulted in decision of writing new parser. It uses generic mtd interface and was successfully tested with Netgear WNDR4500 router which has 2 flash memories: serial one and NAND one. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: cmdlinepart: remove unneeded initializationArtem Bityutskiy1-1/+1
We do not have to initialize variables for .bss to 0 in Linux. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: omap2: fix module loadingAndreas Bießmann1-0/+1
Unloading the omap2 nand driver missed to release the memory region which will result in not being able to request it again if one want to load the driver later on. This patch fixes following error when loading omap2 module after unloading: ---8<--- ~ $ rmmod omap2 ~ $ modprobe omap2 [ 37.420928] omap2-nand: probe of omap2-nand.0 failed with error -16 ~ $ --->8--- This error was introduced in 67ce04bf2746f8a1f8c2a104b313d20c63f68378 which was the first commit of this driver. Signed-off-by: Andreas Bießmann <andreas@biessmann.de> Cc: stable@vger.kernel.org Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: omap2: fix omap_nand_remove segfaultAndreas Bießmann1-1/+1
Do not kfree() the mtd_info; it is handled in the mtd subsystem and already freed by nand_release(). Instead kfree() the struct omap_nand_info allocated in omap_nand_probe which was not freed before. This patch fixes following error when unloading the omap2 module: ---8<--- ~ $ rmmod omap2 ------------[ cut here ]------------ kernel BUG at mm/slab.c:3126! Internal error: Oops - BUG: 0 [#1] PREEMPT ARM Modules linked in: omap2(-) CPU: 0 Not tainted (3.6.0-rc3-00230-g155e36d-dirty #3) PC is at cache_free_debugcheck+0x2d4/0x36c LR is at kfree+0xc8/0x2ac pc : [<c01125a0>] lr : [<c0112efc>] psr: 200d0193 sp : c521fe08 ip : c0e8ef90 fp : c521fe5c r10: bf0001fc r9 : c521e000 r8 : c0d99c8c r7 : c661ebc0 r6 : c065d5a4 r5 : c65c4060 r4 : c78005c0 r3 : 00000000 r2 : 00001000 r1 : c65c4000 r0 : 00000001 Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user Control: 10c5387d Table: 86694019 DAC: 00000015 Process rmmod (pid: 549, stack limit = 0xc521e2f0) Stack: (0xc521fe08 to 0xc5220000) fe00: c008a874 c00bf44c c515c6d0 200d0193 c65c4860 c515c240 fe20: c521fe3c c521fe30 c008a9c0 c008a854 c521fe5c c65c4860 c78005c0 bf0001fc fe40: c780ff40 a00d0113 c521e000 00000000 c521fe84 c521fe60 c0112efc c01122d8 fe60: c65c4860 c0673778 c06737ac 00000000 00070013 00000000 c521fe9c c521fe88 fe80: bf0001fc c0112e40 c0673778 bf001ca8 c521feac c521fea0 c02ca11c bf0001ac fea0: c521fec4 c521feb0 c02c82c4 c02ca100 c0673778 bf001ca8 c521fee4 c521fec8 fec0: c02c8dd8 c02c8250 00000000 bf001ca8 bf001ca8 c0804ee0 c521ff04 c521fee8 fee0: c02c804c c02c8d20 bf001924 00000000 bf001ca8 c521e000 c521ff1c c521ff08 ff00: c02c950c c02c7fbc bf001d48 00000000 c521ff2c c521ff20 c02ca3a4 c02c94b8 ff20: c521ff3c c521ff30 bf001938 c02ca394 c521ffa4 c521ff40 c009beb4 bf001930 ff40: c521ff6c 70616d6f b6fe0032 c0014f84 70616d6f b6fe0032 00000081 60070010 ff60: c521ff84 c521ff70 c008e1f4 c00bf328 0001a004 70616d6f c521ff94 0021ff88 ff80: c008e368 0001a004 70616d6f b6fe0032 00000081 c0015028 00000000 c521ffa8 ffa0: c0014dc0 c009bcd0 0001a004 70616d6f bec2ab38 00000880 bec2ab38 00000880 ffc0: 0001a004 70616d6f b6fe0032 00000081 00000319 00000000 b6fe1000 00000000 ffe0: bec2ab30 bec2ab20 00019f00 b6f539c0 60070010 bec2ab38 aaaaaaaa aaaaaaaa Backtrace: [<c01122cc>] (cache_free_debugcheck+0x0/0x36c) from [<c0112efc>] (kfree+0xc8/0x2ac) [<c0112e34>] (kfree+0x0/0x2ac) from [<bf0001fc>] (omap_nand_remove+0x5c/0x64 [omap2]) [<bf0001a0>] (omap_nand_remove+0x0/0x64 [omap2]) from [<c02ca11c>] (platform_drv_remove+0x28/0x2c) r5:bf001ca8 r4:c0673778 [<c02ca0f4>] (platform_drv_remove+0x0/0x2c) from [<c02c82c4>] (__device_release_driver+0x80/0xdc) [<c02c8244>] (__device_release_driver+0x0/0xdc) from [<c02c8dd8>] (driver_detach+0xc4/0xc8) r5:bf001ca8 r4:c0673778 [<c02c8d14>] (driver_detach+0x0/0xc8) from [<c02c804c>] (bus_remove_driver+0x9c/0x104) r6:c0804ee0 r5:bf001ca8 r4:bf001ca8 r3:00000000 [<c02c7fb0>] (bus_remove_driver+0x0/0x104) from [<c02c950c>] (driver_unregister+0x60/0x80) r6:c521e000 r5:bf001ca8 r4:00000000 r3:bf001924 [<c02c94ac>] (driver_unregister+0x0/0x80) from [<c02ca3a4>] (platform_driver_unregister+0x1c/0x20) r5:00000000 r4:bf001d48 [<c02ca388>] (platform_driver_unregister+0x0/0x20) from [<bf001938>] (omap_nand_driver_exit+0x14/0x1c [omap2]) [<bf001924>] (omap_nand_driver_exit+0x0/0x1c [omap2]) from [<c009beb4>] (sys_delete_module+0x1f0/0x2ec) [<c009bcc4>] (sys_delete_module+0x0/0x2ec) from [<c0014dc0>] (ret_fast_syscall+0x0/0x48) r8:c0015028 r7:00000081 r6:b6fe0032 r5:70616d6f r4:0001a004 Code: e1a00005 eb0d9172 e7f001f2 e7f001f2 (e7f001f2) ---[ end trace 6a30b24d8c0cc2ee ]--- Segmentation fault --->8--- This error was introduced in 67ce04bf2746f8a1f8c2a104b313d20c63f68378 which was the first commit of this driver. Signed-off-by: Andreas Bießmann <andreas@biessmann.de> Cc: stable@vger.kernel.org Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: cfi_cmdset_0001: Fix problem with unlocking timeoutStefan Roese1-3/+11
Unlocking may take up to 1.4 seconds on some Intel flashes. So lets use a max. of 1.5 seconds (1500ms) as timeout. See "Clear Block Lock-Bits Time" on page 40 in "3 Volt Intel StrataFlash Memory" 28F128J3,28F640J3,28F320J3 manual from February 2003 This patch also fixes some other problems with this timeout: - Don't use HZ in timeout "calculation"! While testing we noticed that an unlocking timeout occured with HZ=1000 and didn't occur with HZ=300. This was because the timeout parameter was calculated differently depending on the HZ value. Now a fixed value of 1500ms is used. - The last parameter of WAIT_TIMEOUT (defined to inval_cache_and_wait_for_operation) has to be passed in micro-seconds. So multiply the ms value with 1000 and not 100 to calculate this value. - Use variable name "mdelay" instead of misleading "udelay". Signed-off-by: Stefan Roese <sr@denx.de> Tested-by: Stephan Gatzka <stephan@gatzka.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: nand: Added a device flag for subpage read supportJeff Westfahl1-2/+7
Added a NAND device flag for subpage read support. Previously this was hard coded based on large page and soft ECC. Updated base NAND driver to use the new subpage read flag if the NAND is large page and soft ECC. Signed-off-by: Jeff Westfahl <jeff.westfahl@ni.com> Reviewed-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: orion_nand: remove <mach/hardware.h> includeThomas Petazzoni1-1/+0
Commit abcda1dc ('arm: plat-orion: introduce PLAT_ORION_LEGACY hidden config option') currently pending in linux-next will make the ARCH_MVEBU platform select PLAT_ORION, which means that now all Orion drivers can be enabled on ARCH_MVEBU. This works fine for most drivers, except for orion_nand, because it includes <mach/hardware.h>, but mach-mvebu does not have a mach/hardware.h header (it is considered as a deprecated practice). It turns out that the <mach/hardware.h> include in orion_nand is not necessary: the driver builds perfectly fine without it, so we simply get rid of it. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Tested-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: mtd_nandecctest: make module_init() return an error code if test failsAkinobu Mita1-3/+6
Return an error code if test fails in order to detect a test case failure by invoking tests repeatedly like this: while sudo modprobe mtd_nandecctest; do sudo modprobe -r mtd_nandecctest done Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: mtd_nandecctest: remove unnecessary srandom32() callAkinobu Mita1-2/+0
It is unnecessary for this driver to call srandom32() in module_init. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: m25p80: add support for the EON EN25Q64 chipGabor Juhos1-0/+1
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: m25p80: add support for Micron N25Q128Jan Luebbe1-0/+1
Signed-off-by: Jan Luebbe <jlu@pengutronix.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: lpc32xx_mlc: Cleanup after DT-only conversionRoland Stigge1-28/+18
The LPC32xx's DT-only conversion of the MLC NAND driver makes NAND config via platform_data obsolete. Dropped by this patch. Further, the driver really needs CONFIG_OF, which is already reflected by the dependency on ARCH_LPC32XX which depends on CONFIG_OF. So also dropping CONFIG_OF ifdefs. There is still platform_data necessary to supply the dma_filter callback for the dma engine. This is a completely different data structure than the old platform_data for NAND config, so renaming some old "pdata" variable to "ncfg" to prevent confusion with the new platform data. Signed-off-by: Roland Stigge <stigge@antcom.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: lpc32xx_slc: Cleanup after DT-only conversionRoland Stigge1-31/+21
The LPC32xx's DT-only conversion of the SLC NAND driver makes NAND config via platform_data obsolete. Dropped by this patch. Further, the driver really needs CONFIG_OF, which is already reflected by the dependency on ARCH_LPC32XX which depends on CONFIG_OF. So also dropping CONFIG_OF ifdefs. There is still platform_data necessary to supply the dma_filter callback for the dma engine. This is a completely different data structure than the old platform_data for NAND config, so renaming some old "pdata" variable to "ncfg" to prevent confusion with the new platform data. Signed-off-by: Roland Stigge <stigge@antcom.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: allow MTD_NAND_GPMI_NAND to be built as moduleFabio Estevam1-1/+1
Allow MTD_NAND_GPMI_NAND to be built as module. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: nand: nand_bbt: export nand_update_bbtFabio Estevam1-1/+2
When building MTD_NAND_GPMI_NAND as module, the following error shows up: ERROR: "nand_update_bbt" [drivers/mtd/nand/gpmi-nand/gpmi_nand.ko] undefined! Export nand_update_bbt to fix it. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: nand: rename create_bbt()'s 'len' variable to 'numpages'Shmulik Ladkani1-12/+12
Rename 'len' variable of create_bbt/scan_block_fast/scan_block_full to 'numpages', since it really means number of pages to scan when searching for the BBM (and not the byte length of the scan). Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com> Reviewed-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: s3c2410: Fix compiler warningsSachin Kamat1-0/+2
Fixes the following warnings: ‘s3c2410_nand_correct_data’ defined but not used [-Wunused-function] ‘s3c2410_nand_enable_hwecc’ defined but not used [-Wunused-function] ‘s3c2412_nand_enable_hwecc’ defined but not used [-Wunused-function] ‘s3c2440_nand_enable_hwecc’ defined but not used [-Wunused-function] ‘s3c2410_nand_calculate_ecc’ defined but not used [-Wunused-function] ‘s3c2412_nand_calculate_ecc’ defined but not used [-Wunused-function] ‘s3c2440_nand_calculate_ecc’ defined but not used [-Wunused-function] The above functions are called only when CONFIG_MTD_NAND_S3C2410_HWECC is defined. Thus making them conditional. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: s3c2410: Use devm_* functionsSachin Kamat1-37/+10
devm_* functions are device managed functions and make cleanup code simpler and smaller. devm_kzalloc, devm_clk_get and devm_request_and_ioremap functions are used. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: maps: rbtx4939-flash: delete unneeded testJulia Lawall1-2/+0
Err has only been initialized to 0 at this, so it is not possible that this test can be true. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: mtdpart: break it as soon as we parse out the partitionsHuang Shijie1-1/+4
We may cause a memory leak when the @types has more then one parser. Take the `default_mtd_part_types` for example. The default_mtd_part_types has two parsers now: `cmdlinepart` and `ofpart`. Assume the following case: The kernel command line sets the partitions like: #gpmi-nand:20m(boot),20m(kernel),1g(rootfs),-(user) But the devicetree file(such as arch/arm/boot/dts/imx28-evk.dts) also sets the same partitions as the kernel command line does. In the current code, the partitions parsed out by the `ofpart` will overwrite the @pparts which has already set by the `cmdlinepart` parser, and the the partitions parsed out by the `cmdlinepart` is missed. A memory leak occurs. So we should break the code as soon as we parse out the partitions, In actually, this patch makes a priority order between the parsers. If one parser has already parsed out the partitions successfully, it's no need to use another parser anymore. Signed-off-by: Huang Shijie <shijie8@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: physmap_of: Add "no-unaligned-direct-access" DT propertyStefan Roese1-0/+14
On some platforms (e.g. MPC5200) a direct 1:1 mapping may cause problems with JFFS2 usage, as the local bus (LPB) doesn't support unaligned accesses as implemented in the JFFS2 code via memcpy(). By defining "no-unaligned-direct-access", the flash will not be exposed directly to the MTD users (e.g. JFFS2) any more. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: spear_smi: use devm_ functions consistentlyJulia Lawall1-65/+18
Use devm_kzalloc for all calls to kzalloc and not just the first. Use devm functions for other allocations as well. Move the call to platform_get_resource(pdev, IORESOURCE_MEM, 0) closer to where its result is passed to devm_request_and_ioremap to make the lack of need for a NULL test more evident. The semantic match that finds the inconsistency is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ @@ *devm_kzalloc(...) ... *kzalloc(...) // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: lantiq: Add NAND support on Lantiq XWAY SoC.John Crispin3-0/+210
The driver uses plat_nand. As the platform_device is loaded from DT, we need to lookup the node and attach our xway specific "struct platform_nand_data" to it. Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: check for valid pdata inside plat_nandJohn Crispin1-0/+5
If plat_nand loads and the platform_data is not properly set it will segfault. Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: kill MTD_NAND_VERIFY_WRITEHuang Shijie25-547/+0
Just as Artem suggested: "Both UBI and JFFS2 are able to read verify what they wrote already. There are also MTD tests which do this verification. So I think there is no reason to keep this in the NAND layer, let alone wasting RAM in the driver to support this feature. Besides, it does not work for sub-pages and many drivers have it broken. It hurts more than it provides benefits." So kill MTD_NAND_VERIFY_WRITE entirely. Signed-off-by: Huang Shijie <shijie8@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: m25p80: add support for Micron N25Q256AVivien Didelot1-0/+3
The manufacturer datasheet can be found on the Micron website, under the name n25q_256mb_3v_65nm.pdf: http://www.micron.com/search?source=ps&q=n25q_256mb_3v_65nm Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: maps: pci: remove dead codeWolfram Sang1-23/+0
Removes disabled printk (which should be dev_dbg these days) as well as #if 0 blocks (which are trivial to reimplement if ever needed) to meet basic CodingStyle guidelines. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: use %*ph[CN] to dump small buffersAndy Shevchenko4-41/+14
There is new format specified that helps to dump small buffers. It makes the code simpler and nicer. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Jiandong Zheng <jdzheng@broadcom.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: gpmi: fix the compiler warningsHuang Shijie3-16/+12
Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: nand: davinci: add OF support for davinci nand controllerHeiko Schocher1-1/+71
add OF support for the davinci nand controller. Signed-off-by: Heiko Schocher <hs@denx.de> Acked-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: allow uclinux map driver to be used on any ColdFire CPU platformGreg Ungerer1-1/+1
The uclinux.c map driver has traditionally been used only on non-MMU based systems. But there is no fundamental reason it can't be used on systems running with virtual memory. Some ColdFire CPU based systems now have full paged MMU hardware and can use the uclinux.c mapping driver, so making the uclinux.c driver configuration depend on !CONFIG_MMU doesn't make sense now. Allow the CONFIG_MTD_UCLINUX option to be enabled if CONFIG_COLDFIRE is enabled. (I have chosen not to just more generally allow uclinux.c for any MMU type to keep this option hidden for most systems that are not interested in setting it). Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: fix wrong usage of ioremap_nocache() in uclinux.c map driverGreg Ungerer1-6/+9
The uclinux.c mapping driver uses ioremap_nocache() to map its physical mapping address to a system virtual address. Problem is that the region it is mapping is not device memory. It is ordinary system RAM. On most non-MMU systems this doesn't matter, and the mapping is always a 1:1 translation of the address. On paged memory systems on some architectures the page table mappings are not compatible between normal RAM and device memory. If we want to use the uclinux.c mapping driver on real MMU enabled systems we should be using the kernel virtual address that the mapping is at. For architectures that support the traditional initrd they use phys_to_virt or __va to convert the physical start initrd address to a kernel usable virtual address. The uclinux filesystem mapping is even more restrictive than the typical initrd, it always follows the kernels own bss section (so always in directly mapped memory). Therefore we can use the usual phys_to_virt to translate the physical start address to a virtual address. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: s3c2410: Fix line over 80 characters warningSachin Kamat1-10/+20
Fixes the following checkpatch warnings: WARNING: line over 80 characters Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-09-29mtd: s3c2410: Fix checkpatch warnings and errors related to whitespacesSachin Kamat1-8/+9
Fixes checkpatch warnings and errors related to whitespaces. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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