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Hardware with MCA bus is limited to 386 and 486 class machines
that are now 20+ years old and typically with less than 32MB
of memory. A quick search on the internet, and you see that
even the MCA hobbyist/enthusiast community has lost interest
in the early 2000 era and never really even moved ahead from
the 2.4 kernels to the 2.6 series.
This deletes anything remaining related to CONFIG_MCA from core
kernel code and from the x86 architecture. There is no point in
carrying this any further into the future.
One complication to watch for is inadvertently scooping up
stuff relating to machine check, since there is overlap in
the TLA name space (e.g. arch/x86/boot/mca.c).
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: James Bottomley <JBottomley@Parallels.com>
Cc: x86@kernel.org
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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Cc: James.Bottomley@HansenPartnership.com
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
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There is no such thing as a "device name size" in the driver core, so
remove the define and fix up any users of this odd define in the rest of
the kernel.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Remove proc_root export. Creation and removal works well if parent PDE is
supplied as NULL -- it worked always that way.
So, one useless export removed and consistency added, some drivers created
PDEs with &proc_root as parent but removed them as NULL and so on.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Remove the no longer used mca_is_adapter_used().
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The MCA bus has a few "integrated" functions, which are effectively virtual
slots on the bus. The problem is that these special functions don't have
dedicated pos IDs, so we have to manufacture ids for them outside the pos
space ... and these ids can't be matched by the standard matching function,
so add a special registration that requests a list of pos ids or a particular
integrated function.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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There's a bug in the MCA bus matching algorithm in that it promotes from
signed short to int before comparing with the actual id and does sign
extension on anything > 0x7fff (which means that pos ids > 0x7fff never get
correctly matched).
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Also includes a kmalloc->kzalloc cleanup.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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I recently picked up my older work to remove unnecessary #includes of
sched.h, starting from a patch by Dave Jones to not include sched.h
from module.h. This reduces the number of indirect includes of sched.h
by ~300. Another ~400 pointless direct includes can be removed after
this disentangling (patch to follow later).
However, quite a few indirect includes need to be fixed up for this.
In order to feed the patches through -mm with as little disturbance as
possible, I've split out the fixes I accumulated up to now (complete for
i386 and x86_64, more archs to follow later) and post them before the real
patch. This way this large part of the patch is kept simple with only
adding #includes, and all hunks are independent of each other. So if any
hunk rejects or gets in the way of other patches, just drop it. My scripts
will pick it up again in the next round.
Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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I didn't find any possible modular usage of mca_find_device_by_slot in
the kernel, and this patch therefore removes the EXPORT_SYMBOL.
This patch should be safe since mca-legacy is nothing drivers should
move to.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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drivers/s390/block/dcssblk.c: update device attribute callbacks
Signed-off-by: Yani Ioannou <yani.ioannou@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The patch below does the following cleanups in the MCA code:
- make some needlessly global code static
- remove three unused global functions from mca-legacy.c (two of them
were EXPORT_SYMBOL'ed); this should IMHO be safe since mca-legacy
is not an API drivers should move to
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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From: James Bottomley <James.Bottomley@SteelEye.com>
pci_dev.consistent_dma_mask was introduced to get around problems in the
IA64 Altix machine.
Now, we have a use for it in x86: the aacraid needs coherent memory in a
31 bit address range (2GB). Unfortunately, x86 is converted to the dma
model, so it can't see the pci_dev by the time coherent memory is
allocated.
The solution to all of this is to move pci_dev.consistent_dma_mask to
dev.coherent_dma_mask and make x86 use it in the dma_alloc_coherent()
calls.
This should allow me to make the aacraid set the coherent mask instead
of using it's current dma_mask juggling.
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If you have an MCA kernel on non-MCA hardware and load an MCA driver,
mca_find_unused_adapter() ends up dereferencing NULL.
Teach it about the absence of MCA buses.
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With CONFIG_MCA=y and no MCA bus present, drivers go oops deep in the kobject
code when calling mca_register_driver(). Because there is no MCA subsystem
registered against the driver.
Plug this in mca_register_driver().
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This should fix the MCA problems.
I moved the name field to the struct mca_device because it was in such
extensive use, and this approach caused the least impact.
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Well, this is it for me and strlcpy. I'll leave the rest of the
non-obvious usages of strncpy to the kernel janitors. Seems like quite a
few uses really wanted memcpy instead, but I don't have time to
investigate them all. It does appear that nearly all strncpy's will be
removable. Obsoleting strncpy will probably atleast make the remaining
few think about how they are using it.
This is the patch for my trip through drivers/*.
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From Robert Day, through "Randy.Dunlap" <rddunlap@osdl.org>
This is a patch from Robert Day that does the following:
1) shift menu item in "Processor type and features" menu
2) clean up "Bus options" menu so it's actually hierarchical
Part of it (moving X86_IO_APIC around) looked a little odd to me,
so I asked Roman Zippel about it, and he replied:
"It's correct, although I wouldn't call it a 'design quirk'. :)
It forces one to group options which belong logically together and in this
case X86_IO_APIC is really a bit misplaced, even if it's not visible."
I have tested it (on 2.5.68-plain) and it does indeed make the menus
more hierarchical.
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One of the goals of the whole new modversions implementation:
export-objs is gone for good!
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- Remove count and off parameters from show() methods.
- Remove manual handling of reading from an offset, since the sysfs core
handles that now.
- Remove temp. buffer.
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Makefiles no longer need to include Rules.make, which is currently an
empty file. This patch removes it from the drivers tree Makefiles.
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Make proc and legacy depend on compile options.
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Tidies up the handling of MCA drivers
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Just in case some raving lunatic wants to add other platform
support for MCA (like RS6000)
Abstract the hardware pieces from the general MCA bus handling
Make all bus and pos accesses go through special accessor registers
add transform functions for multiple MCA bus machines
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These changes make MCA use sysfs. They export the identical api
to the previous MCA functions, but now everything operates in
terms of sysfs struct devices.
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