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* gpio: add MC33880 driverRichard Röjfors2009-09-23
| | | | | | | | | A GPIO driver for the Freescale MC33880 High/Low side switch Signed-off-by: Richard Röjfors <richard.rojfors.ext@mocean-labs.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* gpiolib: allow exported GPIO nodes to be named using sysfs linksJani Nikula2009-09-23
| | | | | | | | | | | | | | | | | | Commit 926b663ce8215ba448960e1ff6e58b67a2c3b99b (gpiolib: allow GPIOs to be named) already provides naming on the chip level. This patch provides more flexibility by allowing multiple names where ever in sysfs on a per GPIO basis. Adapted from David Brownell's comments on a similar concept: http://lkml.org/lkml/2009/4/20/203. [randy.dunlap@oracle.com: fix build for CONFIG_GENERIC_GPIO=n] Signed-off-by: Jani Nikula <ext-jani.1.nikula@nokia.com> Acked-by: David Brownell <david-b@pacbell.net> Cc: Daniel Silverstone <dsilvers@simtec.co.uk> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: add boot_timesource sysfs attributeMatthew Garrett2009-09-23
| | | | | | | | | | | | | | | | CONFIG_RTC_HCTOSYS allows the kernel to read the system time from the RTC at boot and resume, avoiding the need for userspace to do so. Unfortunately userspace currently has no way to know whether this configuration option is enabled and thus cannot sensibly choose whether to run hwclock itself or not. Add a hctosys sysfs attribute which indicates whether a given RTC set the system clock. Signed-off-by: Matthew Garrett <mjg@redhat.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: document the sysfs interfaceMatthew Garrett2009-09-23
| | | | | | | | | | | | The sysfs interface to the RTC class drivers is currently undocumented. Add some basic documentation defining the semantics of the fields. Signed-off-by: Matthew Garrett <mjg@redhat.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: at91rm9200 fixesDavid Brownell2009-09-23
| | | | | | | | | | | | | | | | Fix two new-ish runtime warnings in the at91rm9200 (etc) RTC: Platform driver 'at91_rtc' needs updating - please use dev_pm_ops ... by just switching IRQ 1/at91_rtc: IRQF_DISABLED is not guaranteed on shared IRQs ... no longer needed now that rtc_update_irq() changed Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Cc: Andrew Victor <linux@maxim.org.za> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc: introduce missing kfreeJulia Lawall2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Error handling code following a kzalloc should free the allocated data. The semantic match that finds the problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; statement S; expression E; identifier f,f1,l; position p1,p2; expression *ptr != NULL; @@ x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S <... when != x when != if (...) { <+...x...+> } ( x->f1 = E | (x->f1 == NULL || ...) | f(...,x->f1,...) ) ...> ( return \(0\|<+...x...+>\|ptr\); | return@p2 ...; ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Cc: David Brownell <david-b@pacbell.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc: correct error-handling codeJulia Lawall2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This code is not executed before ds1307->rtc has been successfully initialized to the result of calling rtc_device_register. Thus the test that ds1307->rtc is not NULL is always true. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @match exists@ expression x, E; statement S1, S2; @@ x = rtc_device_register(...) ... when != x = E ( * if (x == NULL || ...) S1 else S2 | * if (x == NULL && ...) S1 else S2 ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: driver for PCAP2 PMICDaniel Ribeiro2009-09-23
| | | | | | | | | | | [ospite@studenti.unina.it: get pcap data from the parent device] Signed-off-by: guiming zhuo <gmzhuo@gmail.com> Signed-off-by: Daniel Ribeiro <drwyrm@gmail.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Antonio Ospite <ospite@studenti.unina.it> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: reorder MakefileAlessandro Zummo2009-09-23
| | | | | | Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: add Freescale stmp37xx/378x driverdmitry pervushin2009-09-23
| | | | | | | | | Add support for RTC on the Freescale STMP37xx/378x platform. Signed-off-by: dmitry pervushin <dpervushin@embeddedalley.com> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-bfin: do not share RTC IRQMichael Hennerich2009-09-23
| | | | | | | | | | | The Blackfin RTC IRQ is an internal interrupt, so it makes no sense to have it be shared. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: update documentation wrt RTC_PIE/irq_set_stateMike Frysinger2009-09-23
| | | | | | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: U300 COH 901 331 RTC driver v3Linus Walleij2009-09-23
| | | | | | | | | | | | This adds a driver for the RTC COH 901 331 found in the ST-Ericsson U300 series mobile platforms to the RTC subsystem. It integrates to the ARM kernel support recently added to RMKs ARM tree and will be enabled in the U300 defconfig in due time. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: add driver for MXC's internal RTC moduleDaniel Mack2009-09-23
| | | | | | | | | | | | | | | | | | | | This adds a driver for Freescale's MXC internal real time clock modules. The code is taken from Freescale's BSPs, but modified to fit the current kernel coding mechanisms. Also, the PMIC external clock function was removed for now to not add dead bits and keep the code as simple as possible. [akpm@linux-foundation.org: make PIE_BIT_DEF[] static] Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Daniel Mack <daniel@caiaq.de> Cc: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-philips-pcf2123-rtc-spi-driver-updatesChris Verges2009-09-23
| | | | | | | | | Signed-off: Chris Verges <chrisv@cyberswitching.com> Cc: Christian Pellegrin <chripell@fsfe.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: Philips PCF2123 RTC SPI driverChris Verges2009-09-23
| | | | | | | | | | | | | Add support for the Philips/NXP PCF2123 RTC. Signed-off: Chris Verges <chrisv@cyberswitching.com> Tested-by: Chris Verges <chrisv@cyberswitching.com> Signed-off: Christian Pellegrin <chripell@fsfe.org> Tested-by: Christian Pellegrin <chripell@fsfe.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: handle TX-only/RX-onlyDavid Brownell2009-09-23
| | | | | | | | | | | | | | | | | | Support two new half-duplex SPI implementation restrictions, for links that talk to TX-only or RX-only devices. (Existing half-duplex flavors support both transfer directions, just not at the same time.) Move spi_async() into the spi.c core, and stop inlining it. Then make that function perform error checks and reject messages that demand more than the underlying controller can support. Based on a patch from Marek Szyprowski which did this only for the bitbanged GPIO driver. Cc: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: McSPI support for OMAP4Syed Rafiuddin2009-09-23
| | | | | | | | | | | | | | tAdd adds McSPI support for OMAP4430 SDP platform. All the base addresses are changed between OMAP1/2/3 and OMAP4. The fields of the resource structures are filled at runtime to have McSPI support on OMAP4. Signed-off-by: Syed Rafiuddin <rafiuddin.syed@ti.com> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: McSPI saves CHCONFx tooTero Kristo2009-09-23
| | | | | | | | | | | | Previous restore was lazy and only restored CHxCONF when it was needed by a specific chip select. This could cause occasional errors on an SPI bus where multiple chip selects are in use. Signed-off-by: Tero Kristo <tero.kristo@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: McSPI off-mode supportHemanth V2009-09-23
| | | | | | | | | | | Add context save/restore feature to McSPI driver. Signed-off-by: Hemanth V <hemanthv@ti.com> Reviewed-by: Aaro Koskinen <Aaro.Koskinen@nokia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: Freescale STMP driverdmitry pervushin2009-09-23
| | | | | | | | | | | | Add SPI driver for Freescale STMP 3xxx-based boards [dbrownell@users.sourceforge.net: cleanup sequence, spi_unregister_master] Signed-off-by: dmitry pervushin <dpervushin@embeddedalley.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Timur Tabi <timur@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi_s3c24xx: cache device setup dataBen Dooks2009-09-23
| | | | | | | | | | | | | | | | With the update to the spi_bitbang driver, the transfer setup code is being called more often, and thus is often re-doing calculations that have been done before. The SPI layer allows our driver to add its own data to each device so add a result cache to each device. This should also remove the problem where we where directly setting up registers in the setup call which meant we might overwrite the state of an extant transfer., Signed-off-by: Ben Dooks <ben@simtec.co.uk> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi_s3c24xx: use dev_pm_opsBen Dooks2009-09-23
| | | | | | | | | | | | Change the spi_s3c24xx driver to use dev_pm_ops to avoid the following warning during probe: Platform driver 's3c2410-spi' needs updating - please use dev_pm_ops Signed-off-by: Ben Dooks <ben@simtec.co.uk> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi_s3c24xx: use resource_size() to get resource sizeBen Dooks2009-09-23
| | | | | | | | | | Change the use of (res->end - res->start) to use resource_size() to get the size of the resource. Signed-off-by; Ben Dooks <ben@simtec.co.uk> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi_s3c24xx: fix header includesBen Dooks2009-09-23
| | | | | | | | | | | The driver includes <asm/io.h> where it should be including <linux/io.h> and also includes <mach/hardware.h> and <asm/dma.h> without using anything from these. Signed-off-by: Ben Dooks <ben@simtec.co.uk> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: fix spelling of `automatically' in documentationBen Dooks2009-09-23
| | | | | | | | | Fix spelling of `automatically' in Documentation/spi/spi-summary. Signed-off-by: Ben Dooks <ben@simtec.co.uk> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pxa2xx_spi: register earlierAntonio Ospite2009-09-23
| | | | | | | | | | | | | | | Register pxa2xx_spi earlier so it can be used with cpufreq Signed-off-by: Daniel Ribeiro <drwyrm@gmail.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Daniel Ribeiro <drwyrm@gmail.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: prefix modalias with "spi:"Anton Vorontsov2009-09-23
| | | | | | | | | | | | | | | | | | | | | This makes it consistent with other buses (platform, i2c, vio, ...). I'm not sure why we use the prefixes, but there must be a reason. This was easy enough to do it, and I did it. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Jean Delvare <khali@linux-fr.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Dmitry Torokhov <dtor@mail.ru> Cc: Samuel Ortiz <sameo@openedhand.com> Cc: "John W. Linville" <linville@tuxdriver.com> Acked-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* hwmon: lm70: convert to device table matchingAnton Vorontsov2009-09-23
| | | | | | | | | | | | | | | Make the code a little bit nicer, and shorter. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Kaiwan N Billimoria <kaiwan@designergraphix.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Jean Delvare <khali@linux-fr.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* hwmon: adxx: convert to device table matchingAnton Vorontsov2009-09-23
| | | | | | | | | | | | | | | | Make the code a little bit nicer, and shorter. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Marc Pignat <marc.pignat@hevs.ch> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Jean Delvare <khali@linux-fr.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Marc Pignat <marc.pignat@hevs.ch> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* of: remove "stm,m25p40" aliasAnton Vorontsov2009-09-23
| | | | | | | | | | | | | | | The alias isn't needed any longer since the m25p80 driver converted to the module device table matching. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Jean Delvare <khali@linux-fr.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: add support for device table matchingAnton Vorontsov2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | With this patch spi drivers can use standard spi_driver.id_table and MODULE_DEVICE_TABLE() mechanisms to bind against the devices. Just like we do with I2C drivers. This is useful when a single driver supports several variants of devices but it is not possible to detect them in run-time (like non-JEDEC chips probing in drivers/mtd/devices/m25p80.c), and when platform_data usage is overkill. This patch also makes life a lot easier on OpenFirmware platforms, since with OF we extensively use proper device IDs in modaliases. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Jean Delvare <khali@linux-fr.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: add SPI driver for most known i.MX SoCsSascha Hauer2009-09-23
| | | | | | | | | | | | | This driver has been tested on i.MX1/i.MX27/i.MX35 with an AT25 type EEPROM and on i.MX27/i.MX31 with a Freescale MC13783 PMIC. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Tested-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: David Brownell <david-b@pacbell.net> Cc: Andrea Paterniani <a.paterniani@swapp-eng.it> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: add default selection of PL022 for ARM reference platformslinus.walleij@stericsson.com2009-09-23
| | | | | | | | | | | | This makes the PL022 driver a default choice for any RealView and Versatile boards plus the integrator IMPD1 which all contain the PL022 PrimeCell. This will make it a default choice if and only if a user selects SPI support for their board. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi.h: add missing kernel-doc for struct spi_masterRandy Dunlap2009-09-23
| | | | | | | | | | | | Add missing kernel-doc notation in spi.h for struct spi_master: Warning(include/linux/spi/spi.h:289): No description found for parameter 'mode_bits' Warning(include/linux/spi/spi.h:289): No description found for parameter 'flags' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: add spi_ppc4xx driverSteven A. Falco2009-09-23
| | | | | | | | | | | | | This adds a SPI driver for the SPI controller found in the IBM/AMCC 4xx PowerPC's. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Wolfgang Ocker <weo@reccoware.de> Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Steven A. Falco <sfalco@harris.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: omap2_mcspi use BIT(n)Jouni Hogander2009-09-23
| | | | | | | | | | Convert bit shifted values into BIT format Signed-off-by: Jouni Hogander <jouni.hogander@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: remove i.MX SPI driverSascha Hauer2009-09-23
| | | | | | | | | | | | | This driver is in a non working state at the moment and will be replaced by a bitbang driver which can also handle the newer i.MX variants Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: David Brownell <david-b@pacbell.net> Acked-by: Andrea Paterniani <a.paterniani@swapp-eng.it> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ncpfs: fix wrong check in __ncp_ioctl()Bartlomiej Zolnierkiewicz2009-09-23
| | | | | | | | | | | | | | | | We want to check for s_inode's existence, not inode's one (inode is always valid in this function). This takes care of the following entry from Dan's list: fs/ncpfs/ioctl.c +445 __ncp_ioctl(180) warning: variable derefenced before check 'inode' Reported-by: Dan Carpenter <error27@gmail.com> Cc: Julia Lawall <julia@diku.dk> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Petr Vandrovec <vandrove@vc.cvut.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ncpfs: remove dead URL from documentationBartlomiej Zolnierkiewicz2009-09-23
| | | | | | | | Noticed-by: Joe Perches <joe@perches.com> Cc: Petr Vandrovec <vandrove@vc.cvut.cz> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ncpfs: read buffer overflowRoel Kluin2009-09-23
| | | | | | | | | | | This function uses signed integers for the unix_date and local variables - if a negative number is supplied and the leap-year condition is not met, month will be 0, leading to a later read of day_n[-1] Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Petr Vandrovec <VANDROVE@vc.cvut.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ramfs: move RAMFS_MAGIC to include/linux/magic.hmaximilian attems2009-09-23
| | | | | | | | | initramfs userspace likes to use this magic number. Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Signed-off-by: maximilian attems <max@stro.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* /proc/kcore: update stat.st_size after memory hotplugKAMEZAWA Hiroyuki2009-09-23
| | | | | | | | | | | | | | | After memory hotplug (or other events in future), kcore size can be modified. To update inode->i_size, we have to know inode/dentry but we can't get it from inside /proc directly. But considerinyg memory hotplug, kcore image is updated only when it's opened. Then, updating inode->i_size at open() is enough. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* /proc/kcore: fix stat.st_sizeKAMEZAWA Hiroyuki2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | Presently the size of /proc/kcore which can be read by 'ls -l' is 0. But it's not the correct value. On x86-64, ls -l shows ... root root 140737486266368 2009-09-17 10:29 /proc/kcore Then, 7FFFFFFE02000. This comes from vmalloc area's size. (*) This shows "core" size, not memory size. This patch shows the size by updating "size" field in struct proc_dir_entry. Later, lookup routine will create inode and fill inode->i_size based on this value. Then, this has a problem. - Once inode is cached, inode->i_size will never be updated. Then, this patch is not memory-hotplug-aware. To update inode->i_size, we have to know dentry or inode. But there is no way to lookup them by inside kernel. Hmmm.... Next patch will try it. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kcore: more fixes for initKAMEZAWA Hiroyuki2009-09-23
| | | | | | | | | | proc_kcore_init() doesn't check NULL case. fix it and remove unnecessary comments. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kcore: register module area in generic wayKAMEZAWA Hiroyuki2009-09-23
| | | | | | | | | | | | | | Some archs define MODULED_VADDR/MODULES_END which is not in VMALLOC area. This is handled only in x86-64. This patch make it more generic. And we can use vread/vwrite to access the area. Fix it. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Jiri Slaby <jirislaby@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kcore: register vmemmap rangeKAMEZAWA Hiroyuki2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | Benjamin Herrenschmidt <benh@kernel.crashing.org> pointed out that vmemmap range is not included in KCORE_RAM, KCORE_VMALLOC .... This adds KCORE_VMEMMAP if SPARSEMEM_VMEMMAP is used. By this, vmemmap can be readable via /proc/kcore Because it's not vmalloc area, vread/vwrite cannot be used. But the range is static against the memory layout, this patch handles vmemmap area by the same scheme with physical memory. This patch assumes SPARSEMEM_VMEMMAP range is not in VMALLOC range. It's correct now. [akpm@linux-foundation.org: fix typo] Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Jiri Slaby <jirislaby@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: WANG Cong <xiyou.wangcong@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kcore: use registerd physmem informationKAMEZAWA Hiroyuki2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | For /proc/kcore, each arch registers its memory range by kclist_add(). In usual, - range of physical memory - range of vmalloc area - text, etc... are registered but "range of physical memory" has some troubles. It doesn't updated at memory hotplug and it tend to include unnecessary memory holes. Now, /proc/iomem (kernel/resource.c) includes required physical memory range information and it's properly updated at memory hotplug. Then, it's good to avoid using its own code(duplicating information) and to rebuild kclist for physical memory based on /proc/iomem. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: WANG Cong <xiyou.wangcong@gmail.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* walk system ram rangeKAMEZAWA Hiroyuki2009-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Originally, walk_memory_resource() was introduced to traverse all memory of "System RAM" for detecting memory hotplug/unplug range. For doing so, flags of IORESOUCE_MEM|IORESOURCE_BUSY was used and this was enough for memory hotplug. But for using other purpose, /proc/kcore, this may includes some firmware area marked as IORESOURCE_BUSY | IORESOUCE_MEM. This patch makes the check strict to find out busy "System RAM". Note: PPC64 keeps their own walk_memory_resouce(), which walk through ppc64's lmb informaton. Because old kclist_add() is called per lmb, this patch makes no difference in behavior, finally. And this patch removes CONFIG_MEMORY_HOTPLUG check from this function. Because pfn_valid() just show "there is memmap or not* and cannot be used for "there is physical memory or not", this function is useful in generic to scan physical memory range. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: WANG Cong <xiyou.wangcong@gmail.com> Cc: Américo Wang <xiyou.wangcong@gmail.com> Cc: David Rientjes <rientjes@google.com> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* kcore: register text area in generic wayKAMEZAWA Hiroyuki2009-09-23
| | | | | | | | | | | | | | | | | | | | Some 64bit arch has special segment for mapping kernel text. It should be entried to /proc/kcore in addtion to direct-linear-map, vmalloc area. This patch unifies KCORE_TEXT entry scattered under x86 and ia64. I'm not familiar with other archs (mips has its own even after this patch) but range of [_stext ..._end) is a valid area of text and it's not in direct-map area, defining CONFIG_ARCH_PROC_KCORE_TEXT is only a necessary thing to do. Note: I left mips as it is now. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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