The maple PCI configuration space write methods read the written
location immediately after the write is performed, presumably in order
to flush the write. However, configuration space writes are not
allowed to be posted, making these reads gratuitous. Furthermore,
this behavior potentially causes us to violate the PCI PM spec when
changing between e.g. D0 and D3 states, because a delay of up to 10ms
may be required before the OS accesses configuration space after the
write which initiates the transition. It definitely causes a system
hang for me with a Broadcom 5721 PCIE network adapter, which is fixed
by this change.
Therefore this removes the gratuitous reads from u3_agp_write_config,
u3_ht_write_config, and u4_pcie_write_config.
Signed-off-by: Nathan Lynch <ntl@pobox.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
In order to compile drivers as modules that uses some of the
DCR functions, we need to export the symbols. Example, EMAC
driver and other drivers that are under development use these
functions.
Signed-off-by: Murali Iyer <mniyer@us.ibm.com>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Eliminate the use of error_log_cnt as a global var shared across
different directories. Pass it as a parameter instead.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
----
Respin of earlier patch, with the CONFIG_PSERIES junk removed from the
header file.
arch/powerpc/kernel/nvram_64.c | 10 +++++-----
arch/powerpc/platforms/pseries/rtasd.c | 7 ++++---
include/asm-powerpc/nvram.h | 6 ++++--
3 files changed, 13 insertions(+), 10 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
Get rid of the jumbled usage of the no_logging flag. Its use
spans several directories, and is incorrectly/misleadingly
documented. Instead, two changes:
1) nvram will accept error log as soon as its ready.
2) logging to nvram stops on the first fatal error reported.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
----
arch/powerpc/kernel/nvram_64.c | 8 --------
arch/powerpc/platforms/pseries/rtasd.c | 14 ++++++--------
2 files changed, 6 insertions(+), 16 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
Simplify rtasd initialization code; this also fixes a buglet,
where the /proc entries weren't being cleaned up in case of
failure.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
----
arch/powerpc/platforms/pseries/rtasd.c | 53 +++++++++++----------------------
1 file changed, 19 insertions(+), 34 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
The rtas_token() call does the same thing as this hand-rolled code.
This makes the code easier to read.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
----
arch/powerpc/platforms/pseries/rtasd.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
We don't need to look up the rtas event token once per
cpu per second. This avoids some misc device-tree lookups
and string ops and so provides some minor performance
improvement.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
----
Revised commit-log message.
arch/powerpc/platforms/pseries/rtasd.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
...so that GCC doesn't complain about unused variables in the
callers of these.
Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
arch/ppc/.gitignore shouldn't exclude arch/ppc/boot/include, so
this makes arch/ppc/.gitignore more specific.
Signed-off-by: Paul Mackerras <paulus@samba.org>
This fixes some interrrupt -> interrupt typos.
Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This patch contains a handful of small fixes to allow the Ebony's
flash to be exposed as MTD devices via the physmap_of driver.
Specifically it:
- Makes a small addition to the device tree and zImage wrapper
to record the correct address for the flash in the device tree based
on the board switches as reported via an FPGA register.
- Prohibits building the old hard-coded "Ebony" flash map on
arch/powerpc kernels, in favour of using physmap_of's device tree
based approach.
- Enables MTD and physmap_of in the Ebony defconfig.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This removes several duplicate includes from arch/powerpc/.
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The EEH code needs to ignore PCI bridges; sort-of. It was ignoring
them in the wrong place, and thus failing to set up the
PCI_DN(dn)->pcidev pointer. Imprudent dereferencing of this pointer
would lead to a crash on cards with bridges.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
----
arch/powerpc/platforms/pseries/eeh_cache.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
There are some variables and functions that we should place in init
section. And this patch changes some '__devinit' to '__init', because
the device is platform device and not hot-pluggable.
Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Signed-off-by: Paul Mackerras <paulus@samba.org>
A similar fix to netfilter from Eric Dumazet inspired me to
look around a bit by using some grep/sed stuff as looking for
this kind of bugs seemed easy to automate. This is one of them
I found where it looks like this semicolon is not valid.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Fix probing of PS3 storage devices: in the success case, we should set
`error' to zero, not `result'.
Without this patch no storage devices are found.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
ppc64 does the unusual thing of using #include on a compiler-generated
assembly file (lparmap.s) from an assembly source file (head_64.S).
This runs afoul of my recent patch to pass -gdwarf2 to the assembler
under CONFIG_DEBUG_INFO. This patch avoids the problem by disabling
DWARF generation (-g0) when producing lparmap.s.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The 440 family of processors don't have a tlbie instruction. So, we
implement TLB invalidates by explicitly searching the TLB with tlbsx.,
then clobbering the relevant entry, if any. Unfortunately the PID for
the search needs to be stored in the MMUCR register, which is also
used by the TLB miss handler. Interrupts were enabled in _tlbie(), so
an interrupt between loading the MMUCR and the tlbsx could cause
incorrect search results, and thus a failure to invalide TLB entries
which needed to be invalidated.
This fixes the problem in both arch/ppc and arch/powerpc by inhibiting
interrupts (even critical and debug interrupts) across the relevant
instructions.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
AFAICT, nobody is using ft_ordered(), and it causes a build warning
to be generated. This patch cleans that up by removing the function
and the commented-out code that calls it.
Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
At present, spu_create with an invalid neighbo(u)r will return -ENOSYS,
not -EBADF, but only when spufs.o is built as a module.
This change adds the appropriate errno, making the behaviour the same
as the built-in case.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
[GFS2] Revert remounting w/o acl option leaves acls enabled
[GFS2] Fix setting of inherit jdata attr
[GFS2] Fix incorrect error path in prepare_write()
[GFS2] Fix incorrect return code in rgrp.c
[GFS2] soft lockup in rgblk_search
[GFS2] soft lockup detected in databuf_lo_before_commit
[DLM] fix basts for granted PR waiting CW
[DLM] More othercon fixes
[DLM] Fix memory leak in dlm_add_member() when dlm_node_weight() returns less than zero
[DLM] zero unused parts of sockaddr_storage
[DLM] fix NULL ls usage
[DLM] Clear othercon pointers when a connection is closed
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
i2c-s3c2410: Build fix
i2c/menelaus: Build fix
i2c-mv64xxx: Reinitialize hw and driver on I2C bus hang
i2c-mpc: Don't disable I2C module on stop condition
i2c-iop3xx: Set I2C_CLASS_HWMON to adapter class
i2c/isp1301_omap: Build fixes, whitespace
i2c-mpc: Pass correct dev_id to free_irq on error path
i2c-i801: Typo: erroneous
Fixup the include files after the arch moves that
where included in 2.6.23.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Under certain conditions, the mv64xxx I2C bus can hang preventing
further operation. To make the driver more robust, we now reset
the I2C hardware and the driver state machine when such hangs are
detected.
Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Disabling module on stop doesn't work on some CPUs (ie. mpc8241,
as reported by Guennadi Liakhovetski), so remove that.
Disable I2C module on errors/interrupts to prevent it from
locking up on mpc5200b.
Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
In order to be able to use sensors on the IOP3xx SoCs, one needs to set
the adapter class to I2C_CLASS_HWMON.
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Build fixes for isp1301_omap driver. I think an earlier version
of this must have gotten lost somewhere, or maybe it only went
into the Linux-OMAP tree.
Also, some whitespace fixes to bring this more into sync with the
version of this found in the Linux-OMAP tree. (That version has
updates for the OTG controller on the OMAP 1710 which break that
functionality on OMAP 161x boards like the H2, so merging all of
it is not currently an option.)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[IPVS]: Use IP_VS_WAIT_WHILE when encessary.
[NET]: Share correct feature code between bridging and bonding
[ATM] drivers/atm/iphase.c: mostly kmalloc + memset conversion to kzalloc
[IRDA] irda-usb.c: mostly kmalloc + memset conversion to k[cz]alloc
[WAN] drivers/net/wan/hdlc_fr.c: kmalloc + memset conversion to kzalloc
[DCCP]: fix memory leak and clean up style - dccp_feat_empty_confirm()
[DCCP]: fix theoretical ccids_{read,write}_lock() race
[XFRM]: Clean up duplicate includes in net/xfrm/
[TIPC]: Clean up duplicate includes in net/tipc/
[SUNRPC]: Clean up duplicate includes in net/sunrpc/
[PKT_SCHED]: Clean up duplicate includes in net/sched/
[IPV6]: Clean up duplicate includes in net/ipv6/
[IPV4]: Clean up duplicate includes in net/ipv4/
[ATM]: Clean up duplicate includes in net/atm/
[ATM]: Clean up duplicate includes in drivers/atm/
[IPCONFIG]: ip_auto_config fix
[ATM]: fore200e_param_bs_queue() must be __devinit
This reverts commit 569a7b6c2e. The
code was correct originally. The default setting for ACLs after a
remount should be to be the same as before the remount.
Signed-off-by: Abhijith Das <adas@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Due to a mix up between the jdata attribute and inherit jdata attribute
it has not been possible to set the inherit jdata attribute on
directories. This is now fixed and the ioctl will report the inherit
jdata attribute for directories rather than the jdata attribute as it
did previously. This stems from our need to have the one bit in the
ioctl attr flags mean two different things according to whether the
underlying inode is a directory or not.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
The error path in prepare_write() was incorrect in the (very rare) event
that the transaction fails to start. The following prevents a NULL
pointer dereference,
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
The following patch fixes a bug where 0 was being used as a return code
to indicate "nothing to do" when in fact 0 was a valid block location
which might be returned by the function.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This patch seems to fix the problem described in bugzilla bug 246114.
It was written by Steve Whitehouse with some tweaking by me.
The code was looping in the relatively new section of code designed to
search for and reuse unlinked inodes. In cases where it was finding an
appropriate inode to reuse, it was looping around and finding the same
block over and over because a "<=" check should have been a "<" when
comparing the goal block to the last unlinked block found.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This is part 2 of the patch for bug #245832, part 1 of which is already
in the git tree.
The problem was that sdp->sd_log_num_databuf was not always being
protected by the gfs2_log_lock spinlock, but the sd_log_le_databuf
(which it is supposed to reflect) was protected. That meant there
was a timing window during which gfs2_log_flush called
databuf_lo_before_commit and the count didn't match what was
really on the linked list in that window. So when it ran out of
items on the linked list, it decremented total_dbuf from 0 to -1 and
thus never left the "while(total_dbuf)" loop.
The solution is to protect the variable sdp->sd_log_num_databuf so
that the value will always match the contents of the linked list,
and therefore the number will never go negative, and therefore, the
loop will be exited properly.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Fix a long standing bug where a blocking callback would be missed
when there's a granted lock in PR mode and waiting locks in both
PR and CW modes (and the PR lock was added to the waiting queue
before the CW lock). The logic simply compared the numerical values
of the modes to determine if a blocking callback was required, but in
the one case of PR and CW, the lower valued CW mode blocks the higher
valued PR mode. We just need to add a special check for this PR/CW
case in the tests that decide when a blocking callback is needed.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
The last patch to clean out 'othercon' structures only fixed half the problem.
The attached addresses the other situations too, and fixes bz#238490
Signed-Off-By: Patrick Caulfield <pcaulfie@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Nathan Lynch