Considering below scenario:
1.Unload a PCI device's driver, the device ->current remains in PCI_D0.
2.Do suspend/resume circle. After that, BIOS puts the device to D3.
3.Reload the device driver. The calling pci_set_power_state in the
driver can't change the state to D0, as set_power_state thinks the
device is already in D0.
A bug is reported at http://bugzilla.kernel.org/show_bug.cgi?id=6024
Pat attached a patch at
http://marc.theaimsgroup.com/?l=linux-pci&m=114049761428561&w=2 for this
issue, but it's lost. As pci_set_power_state can handle D3 -> D0
correctly (restore config space), I simplified Patrick's patch.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Cc: Patrick Mochel <mochel@digitalimplant.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This reverts much of the original pci_fixup_video change and makes it
work for all arches that need it.
fixed, and tested on x86, x86_64 and IA64 dig.
Signed-off-by: Eiichiro Oiwa <eiichiro.oiwa.nm@hitachi.com>
Acked-by: David Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
pci_hotplug.h says:
* @latch_status: if the latch (if any) is open or closed (1/0)
However, acpiphp returns opposite value.
This patch fixes this issue.
I tested this patch on my ia64 machine that has some apciphp based
hotplug slots.
Signed-off-by: MUNEDA Takahiro <muneda.takahiro@jp.fujitsu.com>
Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
ccw_device_register() is only called from io_subchannel_register()
and io_subchannel_probe() and will never be called for possible
non-io subchannels.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Added a call to device_unregister() in ap_scan_bus() to actively
remove unavailable AP bus devices with every bus scan. Previously
devices were only removed in ap_queue_message() or __ap_poll_all().
Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Consider return values for all user space access function and
return -EFAULT on error.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Move css_probe_device() behind giving up the lock for the old subchannel
in css_evaluate_known_subchannel() so we aren't disabled when we call it.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
sscanf() could leave the interval value unchanged in which case it
would be used uninitialized.
Signed-off-by: Gerald Schaefer <geraldsc@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Looking at the new syscall additions, I noticed that
sys_getcpu_wrapper wraps in to sys_tee, in what appears to be
a copy and paste error. Switch it to point to sys_getcpu..
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
dp->path_component_name can be larger than ->bus_id[]
so use a different naming scheme for this stuff.
Noticed by Jurij Smakov.
Signed-off-by: David S. Miller <davem@davemloft.net>
Don't PAGE_SHIFT pointer before handing it to virt_to_page() in
xlate_dev_kmem_ptr() as it results in a double shift.
Spotted by Bob Montgomery.
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
When using H-TCP with a single flow on a 500Mbit connection (or less
actually), alpha can exceed 65000, so alpha needs to be a u32.
Signed-off-by: Gavin McCullagh <gavin.mccullagh@nuim.ie>
Signed-off-by: Doug Leith <doug.leith@nuim.ie>
Signed-off-by: David S. Miller <davem@davemloft.net>
Doug Leith observed a discrepancy between the version of CUBIC described
in the papers and the version in 2.6.18. A math error related to scaling
causes Cubic to grow too slowly.
Patch is from "Sangtae Ha" <sha2@ncsu.edu>. I validated that
it does fix the problems.
See the following to show behavior over 500ms 100 Mbit link.
Sender (2.6.19-rc3) --- Bridge (2.6.18-rt7) ------- Receiver (2.6.19-rc3)
1G [netem] 100M
http://developer.osdl.org/shemminger/tcp/2.6.19-rc3/cubic-orig.pnghttp://developer.osdl.org/shemminger/tcp/2.6.19-rc3/cubic-fix.png
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The second argument to free_npages() was being incorrectly
calculated, which would thus access far past the end of the
arena->map[] bitmap.
Signed-off-by: David S. Miller <davem@davemloft.net>
1) probe_other_fhcs() wants to see only non-central FHC
busses, so skip FHCs that don't sit off the root
2) Like SBUS, FHC can lack the appropriate address and
size cell count properties, so add an of_busses[]
entry and handlers for that.
3) Central FHC irq translator probing was buggy. We
were trying to use dp->child in irq_trans_init but
that linkage is not setup at this point.
So instead, pass in the parent of "dp" and look for
the child "fhc" with parent "central".
Thanks to the tireless assistence of Ben Collins in tracking
down these problems and testing out these fixes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Sync atstk1002_defconfig with latest git, turn off non-existent
drivers and enable a few more userspace-visible options like
SysV IPC and inotify support.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The read[bwl] and write[bwl] functions are meant for accessing PCI
devices. How this is achieved on AVR32 is unknown, as there are no
systems with a PCI bridge available yet.
On-chip peripheral access, however, should not depend on how we end
up implementing PCI access, so using __raw_read[bwl]/__raw_write[bwl]
is the right thing to do for on-chip peripherals. This patch converts
the drivers for the static memory controller, interrupt controller,
PIO controller and system manager to use __raw MMIO access.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Implement __raw_readsb and __raw_writesb. Export __raw_reads[bwl]
and __raw_writes[bwl] for use by modules.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
A number of new drivers require io{read,write}{8,16,32}{be,} family of io
operations. These are provided for the AVR32 by this patch in the form of
a series of macros.
Access to the (memory mapped) io space through these macros is defined to
be little endian only as little endian devices (such as PCI) are the main
consumer of IO access. If high speed access is required,
io{read,write}{16,32}be macros are supplied to perform native big endian
access to this io space.
Signed-off-by: Ben Nizette <ben@mallochdigital.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When calling e.g. atomic_sub_return with a large constant, the
compiler may output an immediate that is too large for the sub
instruction in the middle of the loop.
Fix this by explicitly specifying the number of bits allowed in the
constraint. Also stop atomic_add_return() and friends from falling
back to their respective "sub" variants if the constant is too large
to fit in an immediate.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
While ioremap() will happily map a physical address through the
P2 (uncached) segment when appropriate, iounmap() doesn't know how
to handle those mappings.
This patch makes iounmap() do the right thing, i.e. nothing, for
such mappings.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Silence a few compile warnings which are basically harmless, but
easy to fix.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Don't generate listing by default, remove unused LIBGCC variable and
rename generated disassembly and listing files to vmlinux.{s,lst}.
Also make sure that files generated during the build are actually
removed with make clean.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* 'intelfb-patches' of master.kernel.org:/pub/scm/linux/kernel/git/airlied/intelfb-2.6:
Remove unnecessary check in drivers/video/intelfb/intelfbhw.c
intel fb: switch to pci_get API
* 'drm-patches' of master.kernel.org:/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm: ioremap balanced with iounmap for drivers/char/drm
drm: fix error returns, sysfs error handling
fix return code in error case.
drm: mga: set dev_priv_size
drm: savage: dev->agp_buffer_map is not initialized for AGP DMA on savages
drm: radeon: only allow specific type-3 packetss through verifier
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6:
[PATCH] x86-64: Only look at per_cpu data for online cpus.
[PATCH] x86-64: Simplify the vector allocator.
* 'merge' of master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] Make sure __cpu_preinit_ppc970 gets called on 970GX processors
[POWERPC] Fix CHRP platforms with only 8259
[POWERPC] IPIC: Fix spinlock recursion in set_irq_handler
[POWERPC] Fix the UCC rx/tx clock of QE
[POWERPC] cell: update defconfig
[POWERPC] spufs: fix another off-by-one bug in spufs_mbox_read
[POWERPC] spufs: fix signal2 file to report signal2
[POWERPC] Fix device_is_compatible() const warning
[POWERPC] Cell timebase bug workaround
[POWERPC] Support feature fixups in modules
[POWERPC] Support feature fixups in vdso's
[POWERPC] Support nested cpu feature sections
[POWERPC] Consolidate feature fixup code
[POWERPC] Fix hang in start_ldr if _end or _edata is unaligned
[POWERPC] Fix spelling errors in ucc_fast.c and ucc_slow.c
[POWERPC] Don't require execute perms on wrapper when building zImage.initrd
[POWERPC] Add 970GX cputable entry
[POWERPC] Fix build breakage with CONFIG_PPC32
[POWERPC] Fix compiler warning message on get_property call
[POWERPC] Simplify stolen time calculation
ioremap must be balanced by an iounmap and failing to do so can result
in a memory leak.
Signed-off-by: Amol Lad <amol@verismonetworks.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
The previous code did something like,
if (error) goto out_err;
....
do {
struct au1000_pcmcia_socket *skt = PCMCIA_SOCKET(i);
del_timer_sync(&skt->poll_timer);
pcmcia_unregister_socket(&skt->socket);
out_err:
flush_scheduled_work();
ops->hw_shutdown(skt);
i--;
} while (i > 0)
.....
- On the error path, skt would not contain a valid value for the first
iteration (skt is masked by uninitialized automatic skt)
- Does not do hw_shutdown() for 0th element of PCMCIA_SOCKET
Signed-off-by: Om Narasimhan <om.turyx@gmail.com>
Cc: "Yoichi Yuasa" <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
debugging goo removed to not leave assymetry in it after possible "leave"
removal.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Remove some code which is unneeded if CONFIG_PM=n.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Some PCMCIA cards do not mention specific IO addresses in the CIS. In that
case, inside the alloc_io_space function, conflicts are detected (the
function returns 1) for the second function of a multifunction card unless
the length of IO address range required is greater than 0x100.
The following patch will remove this conflict checking for a PCMCIA
function which had not mentioned any specific IO address to be mapped from.
The patch is tested for Linux kernel 2.6.15.4 and works fine in the above
case and is as suggested by Dave Hinds.
Signed-off-by: Kaustav Majumdar <kaustav.majumdar@wipro.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
As a replacement for the broad manufactor/card ID match we commented out
because of conflicts with pcnet_cs, add two product ID matches.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
More correct AT91 CF wakeup logic ... only enable/disable the IRQ wakeup
capability, not the IRQ itself. That way the we know that the IRQ will be
disabled correctly, in suspend/resume logic instead of ARM IRQ code.
Most of the pin multiplexing setup has moved to the devices.c setup code.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
This is a cross-port of a similar patch for aic7xxx;
only it's a bit simpler here as we don't support HVD
and all controller actually implement this register.
I hope.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This is a cross-port from aic79xx; we still hit the occasional
BUG_ON in slave_destroy. And again we don't really need the
slave_destroy callback nor the ahc_linux_target structure
at all.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
aic79xx has a special 'iocell' chip which handles the precompensation.
If it's set via DV we should make sure to set the chip correctly, too.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Shaohua Li
