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<title>lwn.git/drivers/isdn/hisax/avm_pci.c, branch v3.10.63</title>
<subtitle>Linux kernel documentation tree maintained by Jonathan Corbet</subtitle>
<id>http://mirrors.hust.edu.cn/git/lwn.git/atom?h=v3.10.63</id>
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<updated>2013-01-03T23:57:02+00:00</updated>
<entry>
<title>Drivers: isdn: remove __dev* attributes.</title>
<updated>2013-01-03T23:57:02+00:00</updated>
<author>
<name>Greg Kroah-Hartman</name>
<email>gregkh@linuxfoundation.org</email>
</author>
<published>2012-12-21T21:13:05+00:00</published>
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<id>urn:sha1:ed5a84cdf593e54969518e82762786fbe1284ce4</id>
<content type='text'>
CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, __devinitdata,
and __devexit from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton &lt;wfp5p@virginia.edu&gt;
Cc: Karsten Keil &lt;isdn@linux-pingi.de&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
</entry>
<entry>
<title>isdn: whitespace coding style cleanup</title>
<updated>2012-02-21T17:04:01+00:00</updated>
<author>
<name>Joe Perches</name>
<email>joe@perches.com</email>
</author>
<published>2012-02-20T03:52:38+00:00</published>
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<id>urn:sha1:475be4d85a274d0961593db41cf85689db1d583c</id>
<content type='text'>
isdn source code uses a not-current coding style.

Update the coding style used on a per-line basis
so that git diff -w shows only elided blank lines
at EOF.

Done with emacs and some scripts and some typing.

Built x86 allyesconfig.
No detected change in objdump -d or size.

Signed-off-by: Joe Perches &lt;joe@perches.com&gt;
</content>
</entry>
<entry>
<title>drivers/isdn/hisax: Add printf format/argument verification and fix fallout</title>
<updated>2010-11-17T18:58:22+00:00</updated>
<author>
<name>Joe Perches</name>
<email>joe@perches.com</email>
</author>
<published>2010-11-10T18:54:58+00:00</published>
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<id>urn:sha1:9920239c90d5f6dadfb44325abf3568a5e3fd827</id>
<content type='text'>
Add __attribute__((format... to several functins
Make formats and arguments match.

Signed-off-by: Joe Perches &lt;joe@perches.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</content>
</entry>
<entry>
<title>include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h</title>
<updated>2010-03-30T13:02:32+00:00</updated>
<author>
<name>Tejun Heo</name>
<email>tj@kernel.org</email>
</author>
<published>2010-03-24T08:04:11+00:00</published>
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<id>urn:sha1:5a0e3ad6af8660be21ca98a971cd00f331318c05</id>
<content type='text'>
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -&gt; slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo &lt;tj@kernel.org&gt;
Guess-its-ok-by: Christoph Lameter &lt;cl@linux-foundation.org&gt;
Cc: Ingo Molnar &lt;mingo@redhat.com&gt;
Cc: Lee Schermerhorn &lt;Lee.Schermerhorn@hp.com&gt;
</content>
</entry>
<entry>
<title>PCI: push deprecated pci_find_device() function to last user</title>
<updated>2010-02-23T00:17:01+00:00</updated>
<author>
<name>Tilman Schmidt</name>
<email>tilman@imap.cc</email>
</author>
<published>2010-01-18T16:24:10+00:00</published>
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<id>urn:sha1:41a68a748bbc61f5bcea999e33ba72926dfbe6f7</id>
<content type='text'>
The ISDN4Linux HiSax driver family contains the last remaining users
of the deprecated pci_find_device() function. This patch creates a
private copy of that function in HiSax, and removes the now unused
global function together with its controlling configuration option,
CONFIG_PCI_LEGACY.

Signed-off-by: Tilman Schmidt &lt;tilman@imap.cc&gt;
Signed-off-by: Jesse Barnes &lt;jbarnes@virtuousgeek.org&gt;
</content>
</entry>
<entry>
<title>isdn: replace remaining __FUNCTION__ occurrences</title>
<updated>2008-04-28T15:58:34+00:00</updated>
<author>
<name>Harvey Harrison</name>
<email>harvey.harrison@gmail.com</email>
</author>
<published>2008-04-28T09:14:40+00:00</published>
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<id>urn:sha1:156f1ed640170d70c9fc8e5f6f797ea1f2a1653b</id>
<content type='text'>
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison &lt;harvey.harrison@gmail.com&gt;
Cc: Karsten Keil &lt;kkeil@suse.de&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</content>
</entry>
<entry>
<title>cleanup after APUS removal</title>
<updated>2008-02-06T18:41:01+00:00</updated>
<author>
<name>Adrian Bunk</name>
<email>bunk@kernel.org</email>
</author>
<published>2008-02-06T09:36:29+00:00</published>
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<id>urn:sha1:7b892806b09dca77db8ef6acbb6c51271578d34d</id>
<content type='text'>
After the APUS removal, some code can be removed.

Signed-off-by: Adrian Bunk &lt;bunk@kernel.org&gt;
Acked-by: Geert Uytterhoeven &lt;geert@linux-m68k.org&gt;
Cc: Bartlomiej Zolnierkiewicz &lt;bzolnier@gmail.com&gt;
Cc: Karsten Keil &lt;kkeil@suse.de&gt;
Cc: James Bottomley &lt;James.Bottomley@steeleye.com&gt;
Cc: "Antonino A. Daplas" &lt;adaplas@pol.net&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</content>
</entry>
<entry>
<title>PCI: Add Kconfig option to disable deprecated pci_find_* API</title>
<updated>2007-11-05T21:35:17+00:00</updated>
<author>
<name>Jeff Garzik</name>
<email>jeff@garzik.org</email>
</author>
<published>2007-10-29T13:48:09+00:00</published>
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<id>urn:sha1:bd3989e006ed1c88d47c3308746ae0330fc1bcf4</id>
<content type='text'>
Signed-off-by: Jeff Garzik &lt;jgarzik@redhat.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@suse.de&gt;

</content>
</entry>
<entry>
<title>[ISDN] HiSax avm_pci: split setup into three smaller functions</title>
<updated>2007-10-12T13:16:48+00:00</updated>
<author>
<name>Jeff Garzik</name>
<email>jeff@garzik.org</email>
</author>
<published>2007-10-03T19:23:49+00:00</published>
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<id>urn:sha1:2fbde4c0923f53bca9975a46059b5c481a3551ba</id>
<content type='text'>
Preparation for new ISA/PNP/PCI APIs.

Just code movement, and the glue to call the new functions.

Signed-off-by: Jeff Garzik &lt;jgarzik@redhat.com&gt;
</content>
</entry>
<entry>
<title>IRQ: Maintain regs pointer globally rather than passing to IRQ handlers</title>
<updated>2006-10-05T14:10:12+00:00</updated>
<author>
<name>David Howells</name>
<email>dhowells@redhat.com</email>
</author>
<published>2006-10-05T13:55:46+00:00</published>
<link rel='alternate' type='text/html' href='http://mirrors.hust.edu.cn/git/lwn.git/commit/?id=7d12e780e003f93433d49ce78cfedf4b4c52adc5'/>
<id>urn:sha1:7d12e780e003f93433d49ce78cfedf4b4c52adc5</id>
<content type='text'>
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 &lt;dhowells@redhat.com&gt;
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
</content>
</entry>
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