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  1. 08 12月, 2009 1 次提交
  3. 04 12月, 2009 1 次提交
  5. 29 11月, 2009 4 次提交
    • D
      pcmcia: rework the irq_req_t typedef · 5fa9167a
      由 Dominik Brodowski 提交于 
      Most of the irq_req_t typedef'd struct can be re-worked quite
easily:

(1) IRQInfo2 was unused in any case, so drop it.

(2) IRQInfo1 was used write-only, so drop it.

(3) Instance (private data to be passed to the IRQ handler):
	Most PCMCIA drivers using pcmcia_request_irq() to actually
	register an IRQ handler set the "dev_id" to the same pointer
	as the "priv" pointer in struct pcmcia_device. Modify the two
	exceptions (ipwireless, ibmtr_cs) to also work this waym and
	set the IRQ handler's "dev_id" to p_dev->priv unconditionally.

(4) Handler is to be of type irq_handler_t.

(5) Handler != NULL already tells whether an IRQ handler is present.
	Therefore, we do not need the IRQ_HANDLER_PRESENT flag in
	irq_req_t.Attributes.

CC: netdev@vger.kernel.org
CC: linux-bluetooth@vger.kernel.org
CC: linux-ide@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-scsi@vger.kernel.org
CC: alsa-devel@alsa-project.org
CC: Jaroslav Kysela <perex@perex.cz>
CC: Jiri Kosina <jkosina@suse.cz>
CC: Karsten Keil <isdn@linux-pingi.de>
for the Bluetooth parts: Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>
      5fa9167a
    • D
      pcmcia: remove deprecated handle_to_dev() macro · dd2e5a15
      由 Dominik Brodowski 提交于 
      Update remaining users and remove deprecated handle_to_dev() macro

CC: Harald Welte <laforge@gnumonks.org>
CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-serial@vger.kernel.org
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>
      dd2e5a15
    • D
      pcmcia: pcmcia_request_window() doesn't need a pointer to a pointer · 6838b03f
      由 Dominik Brodowski 提交于 
      pcmcia_request_window() only needs a pointer to struct pcmcia_device, not
a pointer to a pointer.

CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-scsi@vger.kernel.org
CC: Jiri Kosina <jkosina@suse.cz>
Acked-by: Karsten Keil <keil@b1-systems.de> (for ISDN)
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>
      6838b03f
    • M
      pcmcia: Pass struct pcmcia_device to pcmcia_map_mem_page() · 868575d1
      由 Magnus Damm 提交于 
      No logic changes, just pass struct pcmcia_device to pcmcia_map_mem_page()

[linux@dominikbrodowski.net: update to 2.6.31]
CC: netdev@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-scsi@vger.kernel.org
CC: Jiri Kosina <jkosina@suse.cz>
Acked-by: Karsten Keil <keil@b1-systems.de> (for ISDN)
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NDominik Brodowski <linux@dominikbrodowski.net>
      868575d1
  7. 09 11月, 2009 3 次提交
  9. 04 9月, 2009 2 次提交
  11. 01 9月, 2009 1 次提交
  13. 06 7月, 2009 1 次提交
  15. 13 6月, 2009 1 次提交
  17. 22 3月, 2009 2 次提交
  19. 04 11月, 2008 1 次提交
  21. 28 10月, 2008 1 次提交
  23. 09 10月, 2008 1 次提交
  25. 31 8月, 2008 1 次提交
  27. 23 8月, 2008 4 次提交
  29. 23 5月, 2008 1 次提交
  31. 06 2月, 2008 1 次提交
  33. 29 10月, 2007 1 次提交
  35. 11 10月, 2007 2 次提交
  37. 08 5月, 2007 1 次提交
  39. 26 4月, 2007 1 次提交
  41. 12 1月, 2007 1 次提交
  43. 05 12月, 2006 2 次提交
  45. 22 11月, 2006 1 次提交
  47. 05 10月, 2006 1 次提交
    • D
      IRQ: Maintain regs pointer globally rather than passing to IRQ handlers · 7d12e780
      由 David Howells 提交于 
      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: NDavid Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
      7d12e780
  49. 14 9月, 2006 1 次提交
  51. 24 8月, 2006 1 次提交
  53. 23 6月, 2006 2 次提交
    • H
      [NET]: Avoid allocating skb in skb_pad · 5b057c6b
      由 Herbert Xu 提交于 
      First of all it is unnecessary to allocate a new skb in skb_pad since
the existing one is not shared.  More importantly, our hard_start_xmit
interface does not allow a new skb to be allocated since that breaks
requeueing.

This patch uses pskb_expand_head to expand the existing skb and linearize
it if needed.  Actually, someone should sift through every instance of
skb_pad on a non-linear skb as they do not fit the reasons why this was
originally created.

Incidentally, this fixes a minor bug when the skb is cloned (tcpdump,
TCP, etc.).  As it is skb_pad will simply write over a cloned skb.  Because
of the position of the write it is unlikely to cause problems but still
it's best if we don't do it.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      5b057c6b
    • E
      [PATCH] Remove useless check in drivers/net/pcmcia/xirc2ps_cs.c · da4f5ccf
      由 Eric Sesterhenn 提交于 
      hi,

coverity choked at this check (id #223), assuming that
skb might be NULL and used anyways later. Since
start_hard_xmit() always gets called with a valid
skb, the check is useless and this patch removes it.
Signed-off-by: NEric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      da4f5ccf