Signed-off-by: Dave Jones <davej@redhat.com>

Signed-off-by: Dave Jones <davej@redhat.com>

Signed-off-by: Dave Jones <davej@redhat.com>

I've seen this happen a few times, and never got to the bottom of it, so hopefully
this will make things a little easier to diagnose what's going on.
Signed-off-by: Dave Jones <davej@redhat.com>

Signed-off-by: Dave Jones <davej@redhat.com>

Signed-off-by: Dave Jones <davej@redhat.com>

We need to clear the previously found cap_ptr, or we exit after
finding the first one, even if its not the one plugged into the
bridge we're looking at.
Signed-off-by: Dave Jones <davej@redhat.com>

Signed-off-by: Dave Jones <davej@redhat.com>

Stupid inversion meant we passed '0' to userspace, and madness
ensued resulting in very funky visuals.
Signed-off-by: Dave Jones <davej@redhat.com>

Signed-off-by: Dave Jones <davej@redhat.com>

Should fix the 'cant find AGP VGA controller' warnings.
Signed-off-by: Dave Jones <davej@redhat.com>

In this mode, fast writes are just ignored, and treated as regular PCI
writes, but disabling them explicitly doesn't hurt.
Signed-off-by: Dave Jones <davej@redhat.com>

X munges what we hand to it, so with luck, this will lower the possibility
of it handing us something with reserved bits set.
Signed-off-by: Dave Jones <davej@redhat.com>

Signed-off-by: Dave Jones <davej@redhat.com>

If we got far enough to run this code, we *must* have an AMD bridge.
Signed-off-by: Dave Jones <davej@redhat.com>

Some combinations of NVidia GeForce cards and this AGP chipset cause lockups
when operated in AGP x2 mode. Force them to x1 mode for safety.
Signed-off-by: Dave Jones <davej@redhat.com>

B0/B1 steppings of this chipset were horribly broken,
and couldn't do fast writes, or side band addressing.
Looking through the errata on this one reads like a horror story, it's
a miracle it could get AGP x1 working.
Signed-off-by: Dave Jones <davej@redhat.com>

Allow chipset drivers to tell the generic routines not to enable
certain features if they have errata when those features are used. 
Signed-off-by: Dave Jones <davej@redhat.com>

(Basically a distinction between XFree and Xorg)
Signed-off-by: Dave Jones <davej@redhat.com>

The AGP specifications define the following...

      agp2 agp3
000   BAD  BAD
001   x1   x4
010   x2   x8
011   BAD  x8
100   x4   BAD
101   BAD  BAD
110   BAD  BAD
111   BAD  BAD
Signed-off-by: Dave Jones <davej@redhat.com>

The previous checks were against AGP_STAT values, but userspace passes us
an agp command register.

Check the reserved bits in the agp mode register.
Signed-off-by: Dave Jones <davej@redhat.com>

Signed-off-by: Dave Jones <davej@redhat.com>

The pci_get_class conversion leaked this refcount.
Signed-off-by: Dave Jones <davej@redhat.com>

mode = What X wants us to set the mode to (As set by AGPMode in X config)
cmd = PCI_AGP_STATUS from the AGP bridge.
tmp = PCI_AGP_STATUS from the graphic card.

mode -> requested_mode
cmd -> bridge_agpstat
tmp -> vga_agpstat
Signed-off-by: Dave Jones <davej@redhat.com>

Use the handy pci_get_class() function instead of implementing our own
pci bus walking loop.  Also makes it skip non-VGA devices fixing up a
long-standing FIXME. Previously, it may have been tripping up on AGP
bridges, which could have caused all sorts of sillyness.
Signed-off-by: Dave Jones <davej@redhat.com>

The following moves all includes <linux/fs.h> (except <linux/ioctl.h>
and <linux/config.h> down to below the existing __KERNEL__ test.  None
of these includes are needed by the user-visible portions of the header,
and in some cases can cause userland apps to break.

For example, LTP and sash with an empty <linux/autoconf.h> will fail
thusly:

  cc -Wall  -I../../include -g -Wall -I../../../../include -Wall    setrlimit02.c -L../../../../lib -lltp  -o setrlimit02
  In file included from /usr/include/asm/atomic.h:6,
                   from /usr/include/linux/fs.h:20,
                   from setrlimit02.c:46:
  /usr/include/asm/processor.h:68: error: `CONFIG_X86_L1_CACHE_SHIFT' undeclared here (not in a function)
  /usr/include/asm/processor.h:68: error: requested alignment is not a constant

Build/run tested with a glibc rebuild as well.
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Various routines were putting a full struct tcp_sock on
the local stack.  What they really wanted was a subset
of this information when doing TCP options processing
when we only have a mini-socket (for example in SYN-RECVD
and TIME_WAIT states).

Therefore pull out the needed information into a sub-struct
and use that in the TCP options processing routines.
Signed-off-by: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
Signed-off-by: David S. Miller <davem@davemloft.net>

Trying to build latest BK-kernel with !CONFIG_PCI and with CONFIG_ISAPNP=y
and CONFIG_PNPBIOS=y I got the following build error:

  LD    vmlinux
drivers/built-in.o(.text+0x5486): In function
'pnpbios_parse_allocated_irqresource':
: undefined reference to 'pcibios_penalize_isa_irq'

Clearly pcibios_penalize_isa_irq() is meant to be called only with
CONFIG_PCI=y.
Signed-off-by: Mika Kukkonen <mikukkon@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The paca holds a shadow of the context struct, used for the real mode SLB
handler.  When we open up a new segment we have to sync up the paca copy
otherwise we will instantiate small page SLB entries until the next context
switch (at which point we resync the paca copy).
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Greg's tree changes the order of fields in struct reasource, causing x86_64 to
explode nastily.  Fix.

Cc: Greg KH <greg@kroah.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix io_remap_page_range() call to pass a missing arg.
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

We need asm/irq.h for __irq_itoa() on sparc[64].
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Some patch in -mm causes the sparc64 build to explode because `struct rusage'
isn't defined or declared in compat.h.   So forward-declare it.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Use named initialisers.

Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Used named initialisers in this declaration before Greg's tree's struct
resource layout changes come in and break it.

(Probably "dma page reg" shouldn't have spaces in the name - be friendly to
/proc/ioports parsers?)

Cc: Richard Henderson <rth@twiddle.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The BIC TCP cwnd problem as identified by Yee-Ting Li and Doug Leith
is that the computation is recalc_ssthresh is incorrect and
BICTCP_1_OVER_BETA/2 should be BICTCP_1_OVER_BETA*2.

My fix is to implement the code from BIC TCP 1.1 which uses a sysctl
to set the beta.  There are a few variable name changes from the 1.1
code, and made the scaling factor a #define instead of hardcoded.

I validated this using netem and kprobes, for more details see
http://developer.osdl.org/shemminger/bic-beta-patch.pdfSigned-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Fixes double-kfree that caused slab corruption.
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

ppc32's implementation of ptep_test_and_clear_young() has a logic error
which makes it fail to flush the hash table. Thus PAGE_ACCESSED is
almost never set again after beeing cleared (unless something else cause
that hash entry to be flushed).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This is a minor modification to the previous patch submission that does
not assume the default contents of the DSPCFG register are zero.

When used with Revision D of the DP83815, the "Recommended Registers
Configuration" from page 78 of the DP83815 data sheet is not entirely
compatible with the driver's "short cable patch".  When the DSPCFG
register is written with the value suggested in the document, then
do_cable_magic() can't read the DSP coefficient and determines that all
cables attached to the DP83815D are 'short', regardless of actual
length.  Short cables (< 30m) cause do_cable_magic to enable additional
attenuation to reduce CRC and idle errors.  If the extra attenuation is
unintentionally enabled for long cables (> 50m?), they will not operate
properly.  The National Semiconductor driver, 'dp83815.c' from
http://www.national.com/appinfo/networks/files/linux_2_4.tar.gz was used
as a basis for this modification.
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>