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2008-07-14i2c-ibm_iic: Remove deprecated OCP style partStefan Roese1-181/+0
The deprecated OCP style driver part is used by the "old" arch/ppc platform. This platform is scheduled for removal in June/July this year. This patch now removes the OCP driver part from the IBM I2C driver. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: Simplify i2c_device_probeJean Delvare1-7/+2
i2c_driver.id_table is mandatory now, so we can simplify i2c_device_probe() a bit. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c/eeprom: Fall back to SMBus read word transactionsJean Delvare1-20/+19
When I2C block reads are not supported by the underlying adapter, use SMBus read word transactions instead of consecutive byte reads. Reasons for this change are: * The consecutive byte read approach is not safe on multi-master buses. * While consecutive byte reads have less overhead if you only count the bytes on the bus, it takes more than twice as many transactions as with SMBus read word transactions, and each transaction has a cost: taking and releasing the adapter mutex, and for polling drivers, waiting for the transaction to complete. This change yields a significant performance boost at HZ=250 with EEPROMs on an Intel 82801 bus (basically twice as fast.) SMBus read word transactions are widely supported so I don't expect compatibility issues. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c/eeprom: Only probe buses with DDC or SPD classJean Delvare1-0/+8
The eeprom driver shouldn't probe i2c buses which don't want to be probed. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: Let bus drivers add SPD to their classJean Delvare28-30/+30
Let general purpose I2C/SMBus bus drivers add SPD to their class. Once this is done, we will be able to tell the eeprom driver to only probe for SPD EEPROMs and similar on these buses. Note that I took a conservative approach here, adding I2C_CLASS_SPD to many drivers that have no idea whether they can host SPD EEPROMs or not. This is to make sure that the eeprom driver doesn't stop probing buses where SPD EEPROMs or equivalent live. So, bus driver maintainers and users should feel free to remove the SPD class from drivers those buses never have SPD EEPROMs or they don't want the eeprom driver to bind to them. Likewise, feel free to add the SPD class to any bus driver I might have missed. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: Let framebuffer drivers set their I2C bus class to DDCJean Delvare3-10/+23
Let framebuffer drivers set their I2C bus class to DDC. Once this is done, we will be able to tell the eeprom driver to only probe for EDID EEPROMs on these buses. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c-cpm: BugfixesWolfram Sang1-4/+4
Bugfixes to the i2c-cpm driver - enable correct interrupts (I2CER_TXE instead of I2CER_BUSY) - replace forgotten iic with i2c - prefix debug-output on init with 0x and add frequency Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: Add support for I2C bus on Freescale CPM1/CPM2 controllersJochen Friedrich3-0/+756
This driver uses the port of 2.4 code from Vitaly Bordug <vitb@kernel.crashing.org> and the actual algorithm used by the i2c driver of the DBox code on cvs.tuxboc.org from Felix Domke (tmbinc@gmx.net) and Gillem (htoa@gmx.net) converted to an of_platform_driver. Tested on CPM1 (MPC823 on dbox2 hardware) and CPM2 (MPC8272). Signed-off-by: Jochen Friedrich <jochen@scram.de> Tested-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: Push ioctl BKL down into the i2c codeAlan Cox1-3/+2
This is part of the effort to get rid of the BKL. [JD: In fact i2c-dev doesn't need more locking than is already done for the other i2c drivers, so we can simply switch to unlocked_ioctl.] Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: Add Intel SCH SMBus supportAlek Du3-0/+347
New i2c bus driver for the Intel SCH chipsets (AF82US15W, AF82US15L, AF82UL11L). Signed-off-by: Alek Du <alek.du@intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: Simplify i2c_del_driver()Jean Delvare1-6/+4
i2c_del_driver() can be simplified a bit. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: Use list_for_each_entry_safeMatthias Kaehlcke1-8/+4
Use list_for_each_entry_safe() in i2c_del_adapter() and i2c_del_driver(). Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c-pca-platform: Fix error codeWolfram Sang1-1/+1
Fix errorcode to be more descriptive when ioremap fails. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c-pca-algo: Fix error codeWolfram Sang1-1/+1
Give a more concrete error code, when the bus is not idle. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: Consistently reject unsupported transactionsJean Delvare10-34/+23
Many PC SMBus host controller drivers don't properly handle the case where they are requested to achieve a transaction they do not support. Update them so that the consistently print a warning message and return a single error value in this case. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c-piix4: Various cleanups and minor fixesJean Delvare1-26/+15
The i2c-piix4 driver was used recently as a model to write a new SMBus host controller driver and this made me realize that the code of this old driver wasn't exactly good. So, here are many cleanups and minor fixes to this driver, so that these minor mistakes aren't duplicated again: * Delete unused structure. * Delete needless forward function declaration. * Properly announce the SMBus host controller as we find it. * Spell it SMBus not SMB. * Return -EBUSY instead of -ENODEV when the I/O region is already in use. * Drop useless masks on the 7-bit address and the R/W bit. * Reject block transaction requests with an invalid block length. * Check and report block transaction replies with an invalid block length. * Delete a useless comment. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: Bus drivers return -Errno not -1David Brownell15-148/+191
Tighten error paths used by various i2c adapters (mostly x86) so they return real fault/errno codes instead of a "-1" (which is most often interpreted as "-EPERM"). Build tested, with eyeball review. One minor initial goal is to have adapters consistently return the code "-ENXIO" when addressing a device doesn't get an ACK response, at least in the probe paths where they are already good at stifling related logspam. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: i2c_use_client() defends against NULLDavid Brownell1-3/+5
Defend the i2c refcount calls against NULL pointers, as is important (and conventional) for such calls. Note that none of the current callers of i2c_use_client() use its return value. [JD: I hate this but apparently all the other subsystems do it so...] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: Kerneldoc for most I/O callsDavid Brownell1-9/+124
Provide kerneldoc for most of the I2C and SMBus I/O calls. Add a comment summarizing some fault reporting issues which affect the ability to provide clean fault reports through I2C master transfer calls. (Making it hard to precisely specify their return values...) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: Delete unused function i2c_smbus_write_quickJean Delvare1-7/+0
Function i2c_smbus_write_quick has no users left, so we can delete it. Also update the list of these helper functions which are gone but could be added back if needed. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: Group bus drivers by typeJean Delvare2-344/+370
The list of I2C/SMBus bus drivers is growing and it is sometimes difficult for the users to figure out what drivers they should enable. By grouping the drivers by type, I hope to make the selection easier. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c-core: Return -Errno, not -1David Brownell1-44/+53
More updates to the I2C stack's fault reporting: make the core stop returning "-1" (usually "-EPERM") for all faults. Instead, pass lower level fault code up the stack, or return some appropriate errno. This patch happens to touch almost exclusively SMBus calls. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c-core: Remove needless includeJean Delvare1-1/+0
i2c-core doesn't use seq files, so doesn't need to include <linux/seq_file.h>. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c-bfin-twi: Update the dependenciesMike Frysinger1-3/+2
Since only a few Blackfins lack TWI, just list them in a depends statement. Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: Remove 3 deprecated bus driversAdrian Bunk5-825/+0
This patch contains the scheduled removal of i2c-i810, i2c-prosavage and i2c-savage4. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c-nforce2: Add support for multiplexing on the Tyan S4985Jean Delvare4-0/+287
Just like the Tyan S4882, the S4985 uses a multiplexer to give access to all 16 memory module SPD EEPROMs. This specific i2c-nforce2-s4985 driver adds support for this. It is heavily based on the older i2c-amd756-s4882 driver. As more mainboards will use multiplexer chips, we will have to find a way to support them without having to write a new specfic driver for each. The recent changes to the i2c subsystem should help us, and the new gpio subsystem might help, too. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c-davinci: Initialize cmd_complete soonerTroy Kisky1-1/+2
If an interrupt happens before an I2c master read/write, complete is called on uninitialized structure. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com> Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c-davinci: Fix signal handling bugTroy Kisky1-10/+52
If wait_for_completion_interruptible_timeout exits due to a signal, the i2c bus was locking up. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com> Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c-davinci: Remove useless IVR readTroy Kisky1-4/+0
Interrupts are enabled at the point where the DAVINCI_I2C_IVR_REG is read, so unless an interrupt happened just at that moment, no interrupt would be pending. Even though documentation implies you should do this, I see no reason. If slave support is added, this read would cause a hard to reproduce bug. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com> Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c-davinci: Move dev_dbg statement for more outputTroy Kisky1-3/+2
Previously the dev_dbg only printed if no error. Printing also on an error is more useful Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com> Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c-davinci: Ensure clock between 7-12 MHzTroy Kisky1-4/+11
Ensure psc value gives a clock between 7-12 MHz Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com> Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-14i2c: Use class_for_each_deviceDave Young1-44/+48
Use class_for_each_device for iteration. Signed-off-by: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds4-6/+29
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] bsg: fix oops on remove [SCSI] fusion: default MSI to disabled for SPI and FC controllers [SCSI] ipr: Fix HDIO_GET_IDENTITY oops for SATA devices [SCSI] mptspi: fix oops in mptspi_dv_renegotiate_work() [SCSI] erase invalid data returned by device
2008-07-12rtc-pcf8563: add chip idJon Smirl1-0/+1
Add the rtc8564 chip entry Signed-off-by: Jon Smirl <jonsmirl@gmail.com> Signed-off-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>
2008-07-12rtc-fm3130: fix chip namingAlessandro Zummo1-1/+1
Fix chip naming from fm3031-rtc to fm3031 Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: Sergey Lapin <slapin@ossfans.org> 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>
2008-07-12ov7670: clean up ov7670_read semanticsAndres Salomon1-1/+3
Cortland Setlow pointed out a bug in ov7670.c where the result from ov7670_read() was just being checked for !0, rather than <0. This made me realize that ov7670_read's semantics were rather confusing; it both fills in 'value' with the result, and returns it. This is goes against general kernel convention; so rather than fixing callers, let's fix the function. This makes ov7670_read return <0 in the case of an error, and 0 upon success. Thus, code like: res = ov7670_read(...); if (!res) goto error; ..will work properly. Signed-off-by: Cortland Setlow <csetlow@tower-research.com> Signed-off-by: Andres Salomon <dilinger@debian.org> Acked-by: Jonathan Corbet <corbet@lwn.net> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-12serial8250: sanity check nr_uarts on all paths.Eric W. Biederman1-0/+3
I had 8250.nr_uarts=16 in the boot line of a test kernel and I had a weird mysterious crash in sysfs. After taking an in-depth look I realized that CONFIG_SERIAL_8250_NR_UARTS was set to 4 and I was walking off the end of the serial8250_ports array. Ouch!!! Don't let this happen to someone else. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Alan Cox <alan@redhat.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-12fbdev: bugfix for multiprocess defioJaya Kumar1-1/+19
This patch is a bugfix for how defio handles multiple processes manipulating the same framebuffer. Thanks to Bernard Blackham for identifying this bug. It occurs when two applications mmap the same framebuffer and concurrently write to the same page. Normally, this doesn't occur since only a single process mmaps the framebuffer. The symptom of the bug is that the mapping applications will hang. The cause is that defio incorrectly tries to add the same page twice to the pagelist. The solution I have is to walk the pagelist and check for a duplicate before adding. Since I needed to walk the pagelist, I now also keep the pagelist in sorted order. Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com> Cc: Bernard Blackham <bernard@largestprime.net> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-12drivers/isdn/i4l/isdn_common.c fix small resource leakDarren Jenkins1-1/+3
Coverity CID: 1356 RESOURCE_LEAK I found a very old patch for this that was Acked but did not get applied https://lists.linux-foundation.org/pipermail/kernel-janitors/2006-September/016362.html There looks to be a small leak in isdn_writebuf_stub() in isdn_common.c, when copy_from_user() returns an un-copied data length (length != 0). The below patch should be a minimally invasive fix. Signed-off-by: Darren Jenkins <darrenrjenkins@gmailcom> Acked-by: Karsten Keil <kkeil@suse.de> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-12drivers/char/pcmcia/ipwireless/hardware.c fix resource leakDarren Jenkins1-1/+3
Coverity CID: 2172 RESOURCE_LEAK When pool_allocate() tries to enlarge a packet, if it can not allocate enough memory, it returns NULL without first freeing the old packet. This patch just frees the packet first. Signed-off-by: Darren Jenkins <darrenrjenkins@gmail.com> Acked-by: Jiri Kosina <jkosina@suse.cz> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-12[SCSI] fusion: default MSI to disabled for SPI and FC controllersJames Bottomley1-3/+8
There's a fault on the FC controllers that makes them not respond correctly to MSI. The SPI controllers are fine, but are likely to be onboard on older motherboards which don't handle MSI correctly, so default both these cases to disabled. Enable by setting the module parameter mpt_msi_enable=1. For the SAS case, enable MSI by default, but it can be disabled by setting the module parameter mpt_msi_enable=0. Cc: "Prakash, Sathya" <sathya.prakash@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-07-11Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds1-2/+1
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: [PATCH] IPMI: return correct value from ipmi_write
2008-07-11[PATCH] IPMI: return correct value from ipmi_writeMark Rustad1-2/+1
This patch corrects the handling of write operations to the IPMI watchdog to work as intended by returning the number of characters actually processed. Without this patch, an "echo V >/dev/watchdog" enables the watchdog if IPMI is providing the watchdog function. Signed-off-by: Mark Rustad <MRustad@gmail.com> Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2008-07-11[SCSI] ipr: Fix HDIO_GET_IDENTITY oops for SATA devicesBrian King1-1/+5
Currently, ipr does not support HDIO_GET_IDENTITY to SATA devices. An oops occurs if userspace attempts to send the command. Since hald issues the command, ensure we fail the ioctl in ipr. This is a temporary solution to the oops. Once the ipr libata EH conversion is upstream, ipr will fully support HDIO_GET_IDENTITY. Tested-by: Milton Miller <miltonm@bga.com> Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-07-11Merge branch 'upstream-linus' of ↵Linus Torvalds2-3/+17
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: libata-acpi: don't call sleeping function from invalid context Added Targa Visionary 1000 IDE adapter to pata_sis.c libata-acpi: filter out DIPM enable
2008-07-11libata-acpi: don't call sleeping function from invalid contextZhang Rui1-1/+4
The problem is introduced by commit 664d080c41463570b95717b5ad86e79dc1be0877. acpi_evaluate_integer is a sleeping function, and it should not be called with spin_lock_irqsave. https://bugzilla.redhat.com/show_bug.cgi?id=451399 Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11Added Targa Visionary 1000 IDE adapter to pata_sis.cKai Krakow1-0/+1
This enables short 40-wire detection for my laptop thus enabling UDMA/100. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11libata-acpi: filter out DIPM enableTejun Heo1-2/+12
Some BIOSen enable DIPM via _GTF which causes command timeouts under certain configuration. This didn't occur on 2.6.25 because 2.6.25 defaulted to SRST, so _GTF wasn't executed during boot probe, so ahci host reset disabled DIPM and as _GTF wasn't executed after SRST, DIPM wasn't enabled. On 2.6.26, hardreset is used during probe and after probe _GTF is executed enabling DIPM and thus the failures. This patch could theoretically disable DIPM on machines which used to have it enabled on 2.6.25 but AFAIK ahci is currently the only driver which uses SATA ACPI hierarchy (_SDD) and as the host reset would have always disabled DIPM, this shouldn't happen. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-10rtc: fix reported IRQ rate for when HPET is enabledPaul Gortmaker1-1/+2
The IRQ rate reported back by the RTC is incorrect when HPET is enabled. Newer hardware that has HPET to emulate the legacy RTC device gets this value wrong since after it sets the rate, it returns before setting the variable used to report the IRQ rate back to users of the device -- so the set rate and the reported rate get out of sync. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Brownell <david-b@pacbell.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-10Fix name of Russell King in various commentsUwe Kleine-König4-4/+4
This patch was created by git grep -E -l 'Rus(el|s?e)l King' | xargs -r -t perl -p -i -e 's/Rus(el|s?e)l King/Russell King/g' Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com> Most-Definitely-Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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