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  1. 18 2月, 2009 1 次提交
  3. 24 11月, 2008 2 次提交
  5. 22 11月, 2008 1 次提交
    • C
      axnet_cs / pcnet_cs: moving PCMCIA_DEVICE_PROD_ID for Netgear FA411 · 208fbec5
      由 Cord Walter 提交于 
      Hi,

after noticing that my Netgear FA411 (PCMCIA-NIC) [1] stopped working with
the release of the 2.6.25 kernel (sidux-version), I checked the
respective driver sources and noticed that the pcnet_cs driver bailed
out with "use axnet_cs instead" for the Netgear FA411, but axnet_cs
doesn't claim this ID.

I compiled a kernel with the PCMCIA-ID for the netgear card moved to
axnet_cs from pcnet_cs which worked. I then contacted sidux-kernel
maintainer Stefan Lippers-Hollmann who turned the info into this patch
and integrated it into the kernel:

<http://svn.berlios.de/svnroot/repos/fullstory/linux-sidux-2.6/trunk/debian/patches/features/2.6.27.4_PCMCIA_move-PCMCIA-ID-for-Netgear-FA411-from-pcnet_cs-to-axnet_cs.patch>

This works for me and AFAIK there were no reports of any breakage for
other devices on sidux-support.

This looks like a trivial patch, but since I have very limited
experience with kernel modifications  I might be woefully wrong there.
But if there are no side effects of this patch, is it possible to get it
into the official kernel?

I can provide more detailed information on the affected hardware if
necessary.

-cord

[1]
Socket 1 Device 0:      [axnet_cs]              (bus ID: 1.0)
        Configuration:  state: on
        Product Name:   NETGEAR FA411 Fast Ethernet
        Identification: manf_id: 0x0149 card_id: 0x0411
                        function: 6 (network)
                        prod_id(1): "NETGEAR" (0x9aa79dc3)
                        prod_id(2): "FA411" (0x40fad875)
                        prod_id(3): "Fast Ethernet" (0xb4be14e3)
                        prod_id(4): --- (---)

From: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Date: Sat, 1 Nov 2008 23:53:04 +0000
Subject: PCMCIA: move PCMCIA ID for Netgear FA411 from pcnet_cs to axnet_cs:

Since kernel 2.6.25, commit 61da96be
(pcnet_cs: if AX88190-based card, printk "use axnet_cs instead" message.),
pcnet_cs bails out with "use axnet_cs instead" for the Netgear FA411, but
axnet_cs doesn't claim this ID.

Socket 1 Device 0:      [axnet_cs]              (bus ID: 1.0)
        Configuration:  state: on
        Product Name:   NETGEAR FA411 Fast Ethernet
        Identification: manf_id: 0x0149 card_id: 0x0411
                        function: 6 (network)
                        prod_id(1): "NETGEAR" (0x9aa79dc3)
                        prod_id(2): "FA411" (0x40fad875)
                        prod_id(3): "Fast Ethernet" (0xb4be14e3)
                        prod_id(4): --- (---)

Cc: stable <stable@kernel.org> [2.6.25, 2.6.26, 2.6.27]
Signed-off-by: NStefan Lippers-Hollmann <s.l-h@gmx.de>
Signed-off-by: NCord Walter <qord@cwalter.net>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      208fbec5
  7. 04 11月, 2008 1 次提交
  9. 28 10月, 2008 1 次提交
  11. 03 9月, 2008 1 次提交
  13. 23 8月, 2008 4 次提交
  15. 27 6月, 2008 1 次提交
  17. 13 5月, 2008 1 次提交
  19. 05 3月, 2008 1 次提交
  21. 06 2月, 2008 3 次提交
  23. 29 1月, 2008 1 次提交
  25. 29 10月, 2007 1 次提交
  27. 11 10月, 2007 4 次提交
  29. 09 7月, 2007 1 次提交
  31. 26 4月, 2007 2 次提交
  33. 05 12月, 2006 1 次提交
  35. 07 10月, 2006 1 次提交
  37. 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
  39. 14 9月, 2006 1 次提交
  41. 20 8月, 2006 1 次提交
  43. 03 7月, 2006 1 次提交
  45. 20 5月, 2006 1 次提交
  47. 13 4月, 2006 1 次提交
  49. 31 3月, 2006 6 次提交