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* serial: fix wakup races in the mrst_max3110 driverArjan van de Ven2010-08-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | The mrst_max3110 driver had a set of unsafe wakeup sequences along the following line: if (!atomic_read(&foo)) { atomic_set(&foo, 1); wake_up(worker_thread); } and the worker thread would do if (atomic_read(&foo)) { do_work(); atomic_set(&foo, 0); } which can result in various missed wakups due to test-then-set races, as well as due to clear-after-work instead of clear-before-work. This patch fixes these races by using the proper bit test-and-set operations, and by doing clear-before-work. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* serial: replace open coded mutex with a real mutex in mrst_max3110.cArjan van de Ven2010-08-10
| | | | | | | | | | | | | | | | | | The mrst_max3110.c driver uses an open coded, non atomic variable to create exclusion between two of its worker threads. More than that, while the main thread does a proper set-work-clear sequence, the other thread only does a test, with the result that no actual exclusion is happening. this patch replaces this open coded variable with a proper mutex in addition, the 'lock' spinlock is removed from the per adapter structure, the lock was only ever initialized but never used Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* max3110 sanity check a registerjianwei.yang2010-08-10
| | | | | | | | | | | | | | MAX3111 is the SPI/UART IC installed on the MRST SPI Port Card as a serial debug goal, and the SPI Port Card will be frequently mounted and unmounted from the main board by developers depending whether debug serial is required or not. As the MAX3111 has no subvendor or product id registers available, the patch will try to access one register to decide if this IC is present or not. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* mrst_max3110: add UART driver for Max3110 on MoorestownFeng Tang2010-08-10
| | | | | | | | | | | | | This driver enable the max3110 device, it can be used as a system console. the IRQ needs be enabled if user want a better performance. MRST max3110 works in 3.684MHz clock, which supports 230400 as its maximum rate. Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* serial: add UART_CAP_EFR and UART_CAP_SLEEP flags to 16C950 UARTs definitionYegor Yefremov2010-08-10
| | | | | | | | | | | | Adding UART_CAP_EFR and UART_CAP_SLEEP flags will enable sleep mode and automatic CTS flow control for 16C950 UARTs. It will also avoid capabilities detection warning like this: "ttyS0: detected caps 00000700 should be 00000100" Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* vt: clean up the code - use kernel libraryAndy Shevchenko2010-08-10
| | | | | | | | Signed-off-by: Andy Shevchenko <ext-andriy.shevchenko@nokia.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* serial: There's no config CONSOLEChristoph Egger2010-08-10
| | | | | | | | | | | as there's no config CONSOLE (never has been as far as I can tell) and noone has ever missed that piece of code, it should be safe to remove it making the kernel a tiny bit less complex. Signed-off-by: Christoph Egger <siccegge@cs.fau.de> Acked-by: Greg Ungerer <gerg@snapgear.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* n_gsm.c: removed duplicated #includesAndrea Gelmini2010-08-10
| | | | | | | | drivers/char/n_gsm.c: linux/timer.h is included more than once. Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Merge git://git.infradead.org/mtd-2.6Linus Torvalds2010-08-10
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/mtd-2.6: (79 commits) mtd: Remove obsolete <mtd/compatmac.h> include mtd: Update copyright notices jffs2: Update copyright notices mtd-physmap: add support users can assign the probe type in board files mtd: remove redwood map driver mxc_nand: Add v3 (i.MX51) Support mxc_nand: support 8bit ecc mxc_nand: fix correct_data function mxc_nand: add V1_V2 namespace to registers mxc_nand: factor out a check_int function mxc_nand: make some internally used functions overwriteable mxc_nand: rework get_dev_status mxc_nand: remove 0xe00 offset from registers mtd: denali: Add multi connected NAND support mtd: denali: Remove set_ecc_config function mtd: denali: Remove unuseful code in get_xx_nand_para functions mtd: denali: Remove device_info_tag structure mtd: m25p80: add support for the Winbond W25Q32 SPI flash chip mtd: m25p80: add support for the Intel/Numonyx {16,32,64}0S33B SPI flash chips mtd: m25p80: add support for the EON EN25P{32, 64} SPI flash chips ... Fix up trivial conflicts in drivers/mtd/maps/{Kconfig,redwood.c} due to redwood driver removal.
| * mtd: Remove obsolete <mtd/compatmac.h> includeDavid Woodhouse2010-08-08
| | | | | | | | Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: Update copyright noticesDavid Woodhouse2010-08-08
| | | | | | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * mtd-physmap: add support users can assign the probe type in board filesBarry Song2010-08-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are three reasons to add this support: 1. users probably know the interface type of their flashs, then probe can be faster if they give the right type in platform data since wrong types will not be detected. 2. sometimes, detecting can cause destory to system. For example, for kernel XIP, detecting can cause NOR enter a mode instructions can not be fetched right, which will make kernel crash. 3. For a new probe which is not listed in the rom_probe_types, if users assign it in board files, physmap can still probe it. Signed-off-by: Barry Song <21cnbao@gmail.com> Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: remove redwood map driverChristian Dietrich2010-08-06
| | | | | | | | | | | | | | | | | | Removing the redwood mtd mapping driver, because all REDWOOD_[456] configuration options were removed from the kernel, because they weren't referenced anywhere. Signed-off-by: Christian Dietrich <qy03fugy@stud.informatik.uni-erlangen.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mxc_nand: Add v3 (i.MX51) SupportSascha Hauer2010-08-06
| | | | | | | | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mxc_nand: support 8bit eccSascha Hauer2010-08-06
| | | | | | | | | | | | | | | | | | Nand devices with at least 26 bytes of oob data per 512 byte block can have 8bit ecc on v2 type controllers. This is currently not tested, but at least this patch puts the ECC_MODE bit into a well defined state. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mxc_nand: fix correct_data functionSascha Hauer2010-08-06
| | | | | | | | | | | | | | | | | | | | The v2 controller has a totally different mechanism to check whether the data we read had ecc errors or not. Implement this. The mechanism in the v2 controller happens to be identical to the v3 controller. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mxc_nand: add V1_V2 namespace to registersSascha Hauer2010-08-06
| | | | | | | | | | | | | | | | | | | | This prepares the driver for v3 support. The v3 controller has a completely different register layout, so add a V1_V2_ namespace to the register defines to avoid confusion with the v3 regs. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mxc_nand: factor out a check_int functionSascha Hauer2010-08-06
| | | | | | | | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mxc_nand: make some internally used functions overwriteableSascha Hauer2010-08-06
| | | | | | | | | | | | | | | | | | This patch prepares the driver to add v3 controller support later. The v3 controller is basically the same controller as v1 and v2, but with a completely different register layout. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mxc_nand: rework get_dev_statusSascha Hauer2010-08-06
| | | | | | | | | | | | | | | | | | | | | | We save/restore the value in the buffer anyway, so it makes no difference whether we use main_area0 or main_area1. So, we can use main_area0 and remove main_area1 from the driver which is otherwise unused. Also, clean up the comments in get_dev_status. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mxc_nand: remove 0xe00 offset from registersSascha Hauer2010-08-06
| | | | | | | | | | | | | | | | Add the offset to the register base instead. This is done in preparation for v3 controller support. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: denali: Add multi connected NAND supportChuanxiao Dong2010-08-06
| | | | | | | | | | Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: denali: Remove set_ecc_config functionChuanxiao Dong2010-08-06
| | | | | | | | | | | | | | | | | | | | set_ecc_config function only set ECC_CORRECTION register, so move register setting to probe function. Since controller only support 15bit and 8bit ecc correction, updated nand ecc layout information. Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: denali: Remove unuseful code in get_xx_nand_para functionsChuanxiao Dong2010-08-06
| | | | | | | | | | Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: denali: Remove device_info_tag structureChuanxiao.Dong2010-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hi David, I sent 4 patches using my intel email account. If there is any problem about the format of these patches, I will resend them after I arrived at home by using my gmail account, and I will keep on using gmail account to send patches. Thanks. >From 242e3bf5e17f54b1df8cf285154a7c7a61ff62e9 Mon Sep 17 00:00:00 2001 From: Chuanxiao Dong <chuanxiao.dong@intel.com> Date: Fri, 6 Aug 2010 15:29:41 +0800 Subject: [PATCH 1/4] mtd: denali: Remove device_info_tag structure. Most of the variables in this structure are useless, so just remove this structure and relevant codes. Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: m25p80: add support for the Winbond W25Q32 SPI flash chipGabor Juhos2010-08-06
| | | | | | | | | | Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
| * mtd: m25p80: add support for the Intel/Numonyx {16,32,64}0S33B SPI flash chipsGabor Juhos2010-08-06
| | | | | | | | | | | | Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: m25p80: add support for the EON EN25P{32, 64} SPI flash chipsGabor Juhos2010-08-06
| | | | | | | | | | | | Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: cfi_cmdset_0002: consider version 1.4 as a valid primary extension versionGuillaume LECERF2010-08-06
| | | | | | | | | | | | | | | | | | | | The Spansion S29WS-P device family uses CFI version 1.4 [1]. Consider it as a valid version. [1] http://www.spansion.com/Support/Datasheets/s29ws-p_00_a12_e.pdf Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: atmel_nand: fix warning: 'part_probes' defined but not usedAndreas Bießmann2010-08-06
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes drivers/mtd/nand/atmel_nand.c:372: warning: 'part_probes' defined but not used which is issued when CONFIG_MTD_PARTITIONS is defined but CONFIG_MTD_CMDLINE_PARTS not. Signed-off-by: Andreas Bießmann <biessmann@corscience.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: change struct flchip_shared spinlock locking into mutexStefani Seibold2010-08-06
| | | | | | | | | | | | | | | | | | | | | | | | This patch prevent to schedule while atomic by changing the flchip_shared spinlock into a mutex. This should be save since no atomic path will use this lock. It was suggested by Arnd Bergmann and Vasiliy Kulikov. Signed-off-by: Stefani Seibold <stefani@seibold.net> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: Missing slab.h includeDavid Miller2010-08-06
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: gen_nand: fix support for multiple chipsMarek Vasut2010-08-06
| | | | | | | | | | | | | | | | | | This patch corrects a problem where gen_nand driver assumed there can be only one chip and ignored the pdata->chip.nr_chips value. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: update description on sm_ftlMaxim Levitsky2010-08-06
| | | | | | | | | | | | | | | | I think that scary description can go now... Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: blkdevs: fix crash related to sysfs attributes.Maxim Levitsky2010-08-06
| | | | | | | | | | | | | | | | Remove the attributes group before disk to avoid use after free Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: denali: update get nand para functionsChuanxiao Dong2010-08-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In denali driver, wTotalBlocks variable is useless, so just remove them in get_toshiba_nand_para and get_hynix_nand_para first. Other wTotalBlocks in denali.c and other variables in dev_info struct are also useless, will remove them later. Also add a parameter in get_hynix_nand_para to prepare to remove dev_info struct. This parameter comes by reading NAND ID directly. Reading register will report wrong value for some NAND chips, e.g. some Micron MT29F32G08QAA chips. So update NAND_CMD_READID method as well. Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: denali: rename functions which is named by using capitalsChuanxiao Dong2010-08-05
| | | | | | | | | | | | | | | | rename these functions' name and remove additional declarations in header file Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: denali.c: fix reserved all check-patch errorsChuanxiao Dong2010-08-05
| | | | | | | | | | Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: denali.c: fix all "line over 80 characters" warningsChuanxiao Dong2010-08-05
| | | | | | | | | | Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: denali.c: add and update KERN_ facility level in printk()Chuanxiao Dong2010-08-05
| | | | | | | | | | Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: denali.c: fixed all open brace { check-patch errorsChuanxiao Dong2010-08-05
| | | | | | | | | | Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * nand/denali Clean up all white spaces in code indentChuanxiao2010-08-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hi, I have changed the outlook mail cliet to be linux mutt client and use my personal gmail to submit patches. Here are 5 new patches to fix nand/denali check patch errors. The other 4 patches will be sent out after this mail. Thanks for your review. >From d125ad3f57bbf517131dccad6b5933edf8c2632a Mon Sep 17 00:00:00 2001 From: Chuanxiao Dong <chuanxiao.dong@intel.com> Date: Tue, 3 Aug 2010 15:54:48 +0800 Subject: [PATCH 1/5] mtd: denali.c: clean up all whitespaces in code indent Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: Blackfin NFC: fix nand busy detectionBarry Song2010-08-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The IRQSTAT register is a W1C register used by the interrupt handler and may have its BUSY bit changed. This makes it somewhat unreliable for the polling devready function. So switch it over to use the BUSY bit in the STAT register that always reflects the current state of the hardware. This fixes driver hangs seen when the NAND flash is under heavy system load (like I/O benchmarks). Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: Blackfin NFC: fix handling of page sizesBarry Song2010-08-05
| | | | | | | | | | | | | | | | | | | | | | Rather than forcing the platform resources to declare the desired page size, simply use the existing information passed down to us by the higher layers. This way we work out of the box with all flash chips that the kernel knows about. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: Blackfin NFC: wait for the ECC reset to finishBarry Song2010-08-05
| | | | | | | | | | | | | | | | | | | | | | When resetting the ECC registers/counters, the bit will automatically clear itself once the reset has actually finished. So make sure we wait for that to occur before doing anything else rather than assuming everything is peachy and proceeding with stale ECC values. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: Blackfin NFC: fix typo for read/write delay setupBarry Song2010-08-05
| | | | | | | | | | | | | | | | We used the platform rd_dly field when we meant to use the wr_dly field. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: Blackfin NFC: make sure to check NAND_ALE in cmd_ctrlBarry Song2010-08-05
| | | | | | | | | | | | | | | | | | | | | | The NAND base may send some controls which are neither CLE nor ALE, so we need to explicitly check both instead of assuming things are always one or the other. Otherwise, we sometimes send out illegal addresses to the NAND device. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: Blackfin NFC: fix raw page write/read handlingBarry Song2010-08-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Our write_buf/read_buf funcs always do ECC in HW ECC mode. That is not needed for raw funcs. In fact, write_buf/read_buf should be a pure func for data input/output while chip->ecc.hwctl controls ECC. Unfortunately, we can't separate ECC from normal data input/output in our NFC, so our DMA write_buf/read_buf entries are coupled with ECC operations closely. Thus we need to provide dedicated read_page_raw/write_page_raw funcs where we do non-DMA transactions so as to avoid automatic ECC. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: Blackfin NFC: delete useless comment about jffs2Barry Song2010-08-05
| | | | | | | | | | | | | | | | | | The low level NAND driver doesn't care about filesystems, so punt the local comment indicating otherwise. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * mtd: cfi_cmdset_0002: fix the check for valid primary extension versionsGuillaume LECERF2010-08-04
| | | | | | | | | | | | | | | | | | | | | | | | Valid primary extension versions are: 1.0, 1.1, 1.2, 1.3 [1][2]. Fix the check in cfi_cmdset_0002 accordingly. [1] http://www.amd.com/us-en/assets/content_type/DownloadableAssets/cfi_r20.pdf, page 19 [2] http://www.amd.com/us-en/assets/content_type/DownloadableAssets/cfi_100_20011201.pdf Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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