aboutsummaryrefslogtreecommitdiffstats
path: root/drivers
Commit message (Collapse)AuthorAge
* tty: release BTM while sleeping in block_til_readyArnd Bergmann2010-08-10
| | | | | | | | | | | | Most tty drivers may block while opening a device. Since this possibly depends on another thread closing it first and both threads may need the BTM, we need to release it here. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tty: implement BTM as mutex instead of BKLArnd Bergmann2010-08-10
| | | | | | | | | | | | | | | | | | The tty locking now follows the rules for mutexes, so we can replace the BKL usage with a new subsystem wide mutex. Using a regular mutex here will change the behaviour when blocked on the BTM from spinning to sleeping, but that should not be visible to the user. Using the mutex also means that all the BTM is now covered by lockdep. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tty: remove tty_lock_nestedArnd Bergmann2010-08-10
| | | | | | | | | | | | This changes all remaining users of tty_lock_nested to be non-recursive, which lets us kill this function. As a consequence, we won't need to keep the lock count any more, which allows more simplifications later. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tty: untangle locking of wait_until_sentArnd Bergmann2010-08-10
| | | | | | | | | | | | | | | | | | Some wait_until_sent versions require the big tty mutex, others don't and some callers of wait_until_sent already hold it while other don't. That leads to recursive use of the BTM in these functions, which we're trying to get rid of. This turns all cleans up the locking there so that the driver's wait_until_sent function never takes the BTM itself if it is already called with that lock held. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tty: reorder ldisc lockingArnd Bergmann2010-08-10
| | | | | | | | | | | | | | | | | | | We need to release the BTM in paste_selection() when sleeping in tty_ldisc_ref_wait to avoid deadlocks with tty_ldisc_enable. In tty_set_ldisc, we now always grab the BTM before taking the ldisc_mutex in order to avoid AB-BA deadlocks between the two. tty_ldisc_halt potentially blocks on a workqueue function that takes the BTM, so we must release the BTM before calling it. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tty: introduce wait_event_interruptible_ttyArnd Bergmann2010-08-10
| | | | | | | | | | | | Calling wait_event_interruptible implicitly releases the BKL when it sleeps, but we need to do this explcitly when we have converted it to a mutex. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* cdc-acm: remove dead codeArnd Bergmann2010-08-10
| | | | | | | | | | | The wait_event_interruptible_timeout in acm_port_down is never reached. Remove it to avoid possible deadlocks with the big tty mutex if someone were to start using the blocking version of acm_port_down. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tty: fix console_sem lock orderArnd Bergmann2010-08-10
| | | | | | | | | | | | | | vgacon_do_font_op releases and reacquires the BTM while holding console_sem. This violates the rule that BTM has to be the outer lock whenever we hold both. There does not seem to be any reason to give up the BTM here, so just stop doing that. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tty: never hold BTM while getting tty_mutexArnd Bergmann2010-08-10
| | | | | | | | | | | | | | tty_mutex is never taken with the BTM held, except for two corner cases that are worked around here. We give up the BTM before calling tty_release() in the error path of tty_open(). Similarly, we reorder the locking in ptmx_open() to get tty_mutex before the BTM. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tty: replace BKL with a new tty_lockArnd Bergmann2010-08-10
| | | | | | | | | | | As a preparation for replacing the big kernel lock in the TTY layer, wrap all the callers in new macros tty_lock, tty_lock_nested and tty_unlock. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* serial: fix termios settings in openArnd Bergmann2010-08-10
| | | | | | | | | | | | | | | | | | | | | | | Move termios initialization in open into uart_dtr_rts to make sure it always gets called when necessary. Based on a suggestion from Alan Cox. Alan writes: Ok this sort of makes sense. Something isn't getting initialised and both getty and minicom will do a termios set which is sorting it out. This is occurring because the generic block_til_ready sets ASYNCB_NORMAL_ACTIVE so the termios updating gets skipped. This patch should cure it and then we can think about doing it more elegantly by getting the serial layer to use tty_port_open, kfifo and the like and removing the tons of repeated crap in all the drivers. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reported-by: Tony Luck <tony.luck@intel.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Tony Luck <tony.luck@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* serial: Use block_til_ready helperAlan Cox2010-08-10
| | | | | | | | | Our code now rather closely resembles the helper, so switch to it. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* serial: trim locking on the helpersAlan Cox2010-08-10
| | | | | | | | | | | | | The port mutex protects port->tty, but these paths never need to walk from port->tty. They do need the low level lock as the API expects that but they already also take it. Thus we can drop the extra mutex lock calls here. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* serial: add port helpersAlan Cox2010-08-10
| | | | | | | | | | | We can make this the same as the ones that will be needed by the tty_port helper logic that we want to move to but still call them from the existing code base. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* serial: Change the wait for carrier lockingAlan Cox2010-08-10
| | | | | | | | | | | | We want to push the lock/unlock into the helper functions so that we can prepare to move to using the tty_port helper. The expansion initially comes out a bit ugly but its worth the temporary expansion IMHO just so we can produce a nice testable series of changes. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tty: Move the vt_tty field from the vc_data into the standard tty_portAlan Cox2010-08-10
| | | | | | | | | | This takes all the tty references through the expected interface points so we can refcount them. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tty: Make vt's have a tty_portAlan Cox2010-08-10
| | | | | | | | | | | The vt layer isn't safely handling reference counts to tty object on the input side. Add a tty port structure to the vt layer in order to implement this using the standard helpers. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* vc: Locking clean upAlan Cox2010-08-10
| | | | | | | | | | The virtual console layer uses the BKL for various things that don't really need it. Clean them out. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tty: serial - fix tty referencing in set_ldiscAlan Cox2010-08-10
| | | | | | | | | | Pass down the ldisc number so that the drivers don't have to peek into the tty object themselves. This lets us get rid of another case of back referencing port to tty which we don't want (because of races versus hangup/close). Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tty: serial - fix tty back references in termiosAlan Cox2010-08-10
| | | | | | | | | | | | | One or two drivers go poking back into the tty from the termios setting routine in unsafe ways. We don't need to pass the tty down because the [ab]users are just using it to get at things they can get at anyway. This leaves low_latency setting to sort out along with set_ldisc use. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tty: serial - fix various misuses/mishandlings of port->ttyAlan Cox2010-08-10
| | | | | | | | | | Make it robust against hang up events. In most cases we can do this simply by passing the right things in the first place. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* synclink: reworking locking a bitAlan Cox2010-08-10
| | | | | | | | | | | Use the port mutex and port lock to fix the various races. The locking still isn't totally consistent but its better than before. Wants switching to the port helpers. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tty: Fix the digi acceleport driver NULL checksAlan Cox2010-08-10
| | | | | | | | | This now refcounts but doesn't actually check the reference was obtained in all the places it should. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* specialix: Kill the BKLAlan Cox2010-08-10
| | | | | | | | Use the port mutex instead Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* epca: Kill the big kernel lockAlan Cox2010-08-10
| | | | | | | | | The lock is no longer needed for wait until sent paths so this can go Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* cyclades: Kill off BKL usageAlan Cox2010-08-10
| | | | | | | | | | Use the port mutext for config setting, the rest is locked sufficiently anyway that the BKL makes no odds. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* synclink: kill the big kernel lockAlan Cox2010-08-10
| | | | | | | | | | | We don't need it while waiting and we can lock the ioctls using the port mutex. While at it eliminate use of the hangup mutex and switch to the port mutex. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* rocket: kill BKLAlan Cox2010-08-10
| | | | | | | | | | | | | | We can use the port mutex for this and also for the hangup path so removing the problematic use of the hangup mutex in this driver. Fix up the locking on the various port flags while we are at it. Ultimately this driver needs to be using tty_port_ helpers which would sort this out far better. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* isicom: kill off the BKLAlan Cox2010-08-10
| | | | | | | | | | As with the others we can use the port mutex to get the needed locking properties and fix the race with open. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* riscom8: kill use of lock_kernelAlan Cox2010-08-10
| | | | | | | | | | | | The riscom8 board uses lock_kernel to protect bits of the port setting ioctl logic. We can use the port mutex for this as the logic is internal and will also lock set versus open (a locking property that has been lost somewhere along the way) Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* istallion: use bit ops for the board flagsAlan Cox2010-08-10
| | | | | | | | | This lets us avoid problems with races on the flag changes Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* stallion: prune lock_kernel callsAlan Cox2010-08-10
| | | | | | | | | | | Remove unneeded tty layer lock kernel bits. Relock the needed bits using the port mutex. The istallion still has brd state races but those are not new or introduced by the removal of the lock_kernel logic. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* vt/console: try harder to print output when panicingJesse Barnes2010-08-10
| | | | | | | | | | | | | | | | | | | | | | | | Jesse's initial patch commit said: "At panic time (i.e. when oops_in_progress is set) we should try a bit harder to update the screen and make sure output gets to the VT, since some drivers are capable of flipping back to it. So make sure we try to unblank and update the display if called from a panic context." I've enhanced this to add a flag to the vc that console layer can set to indicate they want this behaviour to occur. This also adds support to fbcon for that flag and adds an fb flag for drivers to indicate they want to use the support. It enables this for KMS drivers. Signed-off-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Acked-by: James Simmons <jsimmons@infradead.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* tty: Add EXTPROC support for LINEMODEhyc@symas.com2010-08-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is against the 2.6.34 source. Paraphrased from the 1989 BSD patch by David Borman @ cray.com: These are the changes needed for the kernel to support LINEMODE in the server. There is a new bit in the termios local flag word, EXTPROC. When this bit is set, several aspects of the terminal driver are disabled. Input line editing, character echo, and mapping of signals are all disabled. This allows the telnetd to turn off these functions when in linemode, but still keep track of what state the user wants the terminal to be in. New ioctl: TIOCSIG Generate a signal to processes in the current process group of the pty. There is a new mode for packet driver, the TIOCPKT_IOCTL bit. When packet mode is turned on in the pty, and the EXTPROC bit is set, then whenever the state of the pty is changed, the next read on the master side of the pty will have the TIOCPKT_IOCTL bit set. This allows the process on the server side of the pty to know when the state of the terminal has changed; it can then issue the appropriate ioctl to retrieve the new state. Since the original BSD patches accompanied the source code for telnet I've left that reference here, but obviously the feature is useful for any remote terminal protocol, including ssh. The corresponding feature has existed in the BSD tty driver since 1989. For historical reference, a good copy of the relevant files can be found here: http://anonsvn.mit.edu/viewvc/krb5/trunk/src/appl/telnet/?pathrev=17741 Signed-off-by: Howard Chu <hyc@symas.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* 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>
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-01 05:30:08 -0500