Commit Graph

70 Commits

Author SHA1 Message Date
Matt LaPlante
0779bf2d2e Fix misc .c/.h comment typos
Fix various .c/.h typos in comments (no code changes).

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-11-30 05:24:39 +01:00
Jiri Slaby
86fbf1486a [PATCH] Char: correct pci_get_device changes
Commits 881a8c120a and
efe1ec2783 corrects pci device matching in
only one way; it no longer oopses/crashes, despite hotplug is not solved
in these changes.

Whenever pci_find_device -> pci_get_device change is performed, also
pci_dev_get and pci_dev_put should be in most cases called to properly
handle hotplug.  This patch does exactly this thing -- increase refcount
to let kernel know, that we are using this piece of HW just now.

It affects moxa and rio char drivers.

Cc: <R.E.Wolff@BitWizard.nl>
Acked-by: Amit Gud <gud@eth.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-21 13:35:05 -07:00
Alan Cox
9d90dafdb1 [PATCH] rio: fix array checking
Found by an analysis tool and reported to the list. Fix is simple enough

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-16 08:27:54 -07:00
Jeff Garzik
c7bec5aba5 Various drivers' irq handlers: kill dead code, needless casts
- Eliminate casts to/from void*

- Eliminate checks for conditions that never occur.  These typically
  fall into two classes:

	1) Checking for 'dev_id == NULL', then it is never called with
	NULL as an argument.

	2) Checking for invalid irq number, when the only caller (the
	system) guarantees the irq handler is called with the proper
	'irq' number argument.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-10-06 15:00:58 -04:00
David Howells
7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00
Jeff Dike
b68e31d0eb [PATCH] const struct tty_operations
As part of an SMP cleanliness pass over UML, I consted a bunch of
structures in order to not have to document their locking.  One of these
structures was a struct tty_operations.  In order to const it in UML
without introducing compiler complaints, the declaration of
tty_set_operations needs to be changed, and then all of its callers need to
be fixed.

This patch declares all struct tty_operations in the tree as const.  In all
cases, they are static and used only as input to tty_set_operations.  As an
extra check, I ran an i386 allyesconfig build which produced no extra
warnings.

53 drivers are affected.  I checked the history of a bunch of them, and in
most cases, there have been only a handful of maintenance changes in the
last six months.  serial_core.c was the busiest one that I looked at.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02 07:57:14 -07:00
Arjan van de Ven
62322d2554 [PATCH] make more file_operation structs static
Mark the static struct file_operations in drivers/char as const.  Making
them const prevents accidental bugs, and moves them to the .rodata section
so that they no longer do any false sharing; in addition with the proper
debug option they are then protected against corruption..

[akpm@osdl.org: build fix]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-03 15:26:59 -07:00
Thomas Gleixner
5d8c8a2e8e [PATCH] irq-flags: rio: Use the new IRQF_ constants
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-02 13:58:52 -07:00
Jörn Engel
6ab3d5624e Remove obsolete #include <linux/config.h>
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-30 19:25:36 +02:00
Andreas Mohr
d6e05edc59 spelling fixes
acquired (aquired)
contiguous (contigious)
successful (succesful, succesfull)
surprise (suprise)
whether (weather)
some other misspellings

Signed-off-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-26 18:35:02 +02:00
Al Viro
92af11cdec [PATCH] missing readb/readw in rio
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-05-27 02:27:23 -04:00
Al Viro
0645819196 [PATCH] copy_to_user() from iomem is a bad thing
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-05-27 02:27:15 -04:00
Al Viro
6bc540e69a [PATCH] forgotten swap of copyout() arguments
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-05-27 02:27:06 -04:00
Al Viro
1bf087194f [PATCH] handling rio MEMDUMP
it copies data _from_ iomem, so it should be rio_memcpy_fromio(), not
->Copy().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-05-27 02:26:58 -04:00
Al Viro
ae5b28a5bb [PATCH] fix rio_copy_to_card() for OLDPCI case
It replaced old rio_pcicopy().  That puppy did _not_ do readb() (unlike
rio_memcpy_toio()) and current implementation is simply broken - readb(NULL)
is never a valid thing to do.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-05-27 02:26:49 -04:00
Al Viro
bfa6b7bb35 [PATCH] uses of ->Copy() in rioroute are bogus
... there we are building a command in normal memory; it will be
copied to iomem (by ->Copy()) later.  Use memcpy()...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-05-27 02:26:40 -04:00
Al Viro
c7c0d0a10f [PATCH] bogus order of copy_from_user() arguments
... aka "somebody forgot to swap arguments when converting from copyin()"

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-05-27 02:26:32 -04:00
Al Viro
38d0d001b9 [PATCH] rio ->Copy() expects the sourse as first argument
... so conversion from rio_pcicopy() to rio_copy_to_card() had broken the
damn thing.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-05-27 02:26:23 -04:00
Al Viro
d886cb586f [PATCH] trivial annotations in rio
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-05-27 02:26:14 -04:00
Alan Cox
655fdeab80 [PATCH] Final rio polish
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-05-15 11:20:57 -07:00
Alan Cox
554b7c801e [PATCH] Yet more rio cleaning (2 of 2)
- Remove more unused headers
- Remove various typedefs
- Correct type of PaddrP (physical addresses should be ulong)
- Kill use of bcopy
- More printk cleanups
- Kill true/false
- Clean up direct access to pci BARs

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-24 07:33:29 -08:00
Alan Cox
57c2d60e1e [PATCH] Yet more rio cleaning (1 of 2)
- Remove more unused headers
- Remove various typedefs
- Correct type of PaddrP (physical addresses should be ulong)
- Kill use of bcopy
- More printk cleanups
- Kill true/false
- Clean up direct access to pci BARs

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-24 07:33:29 -08:00
Alan Cox
db3185242a [PATCH] rio driver rework continued #5
Final polish.  There is no more save_flags/cli type locking left.  We also no
longer use the pcicopy function and file so they can go.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-24 07:33:29 -08:00
Alan Cox
3d336aa257 [PATCH] rio driver rework continued #4
Third large chunk of code cleanup.  The split between this and #3 and #4 is
fairly arbitary and due to the message length limit on the list.  These
patches continue the process of ripping out macros and typedefs while cleaning
up lots of 32bit assumptions.  Several inlines for compatibility also get
removed and that causes a lot of noise.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-24 07:33:29 -08:00
Alan Cox
00d83a54aa [PATCH] rio driver rework continued #3
Second large chunk of code cleanup.  The split between this and #3 and #4 is
fairly arbitary and due to the message length limit on the list.  These
patches continue the process of ripping out macros and typedefs while cleaning
up lots of 32bit assumptions.  Several inlines for compatibility also get
removed and that causes a lot of noise.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-24 07:33:29 -08:00
Alan Cox
e2b3afd676 [PATCH] rio driver rework continued #2
First large chunk of code cleanup.  The split between this and #3 and #4 is
fairly arbitary and due to the message length limit on the list.  These
patches continue the process of ripping out macros and typedefs while cleaning
up lots of 32bit assumptions.  Several inlines for compatibility also get
removed and that causes a lot of noise.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-24 07:33:29 -08:00
Alan Cox
27c6e526f3 [PATCH] rio driver rework continued #1
More header cleanups, strip out typedefs and remove cruft.  There are a lot of
magic macros that can go and also a great deal of abuse of volatile that is
not needed any more as this patch set cleans up the misuse of pointer access
to ISA and PCI space.

It now builds cleanly on 64bit, although there is more work left to do

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-24 07:33:29 -08:00
Alan Cox
b6c6b6021e [PATCH] rioboot: post-Lindent
After the indent we can now clean up unused code, and fix all myriad cases
that don't use readb/writeb properly.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-24 07:33:28 -08:00
Alan Cox
3b8e3f1e44 [PATCH] rioboot: lindent
This is the result of indent -kr -i8 -bri0 -l255

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-24 07:33:28 -08:00
Alan Cox
74769abfcb [PATCH] rio: more header cleanup
Strip some of the typedef mess out Remove a small subset of unused defines
and the like.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-24 07:33:28 -08:00
Alan Cox
84542838a3 [PATCH] rio cleanups
INKERNEL is always defined
HOST is never defined
therefore RTA is also never defined

Strip the relevant garbage out of the headers on this basis.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-03 08:32:04 -08:00
Alan Cox
f4caf1606d [PATCH] Remove unused code from rioctrl.c (Last for this batch of work)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:31:29 -08:00
Alan Cox
1384cee55d [PATCH] Remove rio_table.c unused code
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:31:28 -08:00
Alan Cox
542ea6c37c [PATCH] Remove unused code from rio_linux.c
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:31:28 -08:00
Alan Cox
283c9d546e [PATCH] Remove unused CHECK code from riocmd.c
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:31:28 -08:00
Alan Cox
8b03de1f66 [PATCH] Remove unused code from rioroute.h
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:31:28 -08:00
Alan Cox
f099bfb708 [PATCH] Remove unused code from rioboot.h
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:31:28 -08:00
Alan Cox
c7306c0287 [PATCH] Remove unused code from rioboot
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:31:28 -08:00
Alan Cox
a6176eeab0 [PATCH] Remove #if 0 and other long dead code from rio_tty
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:31:27 -08:00
Alan Cox
925d70d64b [PATCH] Remove long dead #if 0 code from rio_param
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:31:27 -08:00
Alan Cox
09979236d6 [PATCH] Remove old firmware headers from rio drivers
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:31:27 -08:00
Alan Cox
3918276ce5 [PATCH] Remove rtahw.h from rio driver (unused file)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:31:27 -08:00
Alan Cox
169da21f40 [PATCH] Remove file riscos.h from rio driver (unused file)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:30:31 -08:00
Alan Cox
a09be029bb [PATCH] Remove file riowinif.h from rio driver (unused file)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:30:31 -08:00
Alan Cox
69da7f9a63 [PATCH] Remove riotime.h from rio driver (unused file)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:30:31 -08:00
Alan Cox
8618751503 [PATCH] Remove file riolocks.h from rio driver (unused file)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:30:31 -08:00
Alan Cox
0d336ceb1e [PATCH] Remove proto.h from rio driver (unused file)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:30:30 -08:00
Alan Cox
735f88c62e [PATCH] Remove poll.h from rio driver (unused file)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:30:30 -08:00
Alan Cox
009c4cb8aa [PATCH] Remove mesg.h from rio driver (unused file)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:30:30 -08:00
Alan Cox
125ca8fb5b [PATCH] Remove mca.h from rio driver (unused file)
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-16 23:30:30 -08:00