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  1. 01 11月, 2006 3 次提交
  3. 22 10月, 2006 4 次提交
    • A
      [PATCH] libata-sff: Allow for wacky systems · 8eb166bf
      由 Alan Cox 提交于 
      There are some Linux supported platforms that simply cannot hit the low
I/O addresses used by ATA legacy mode PCI mappings. These platforms have
a window for PCI space that is fixed by the board logic and doesn't
include the neccessary locations.

Provide a config option so that such platforms faced with a controller
that they cannot support simply error it and punt
Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      8eb166bf
    • A
      [PATCH] ahci: readability tweak · 12a87d36
      由 Alan Cox 提交于 
      Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      12a87d36
    • A
      [PATCH] ATA must depend on BLOCK · bf2d401b
      由 Adrian Bunk 提交于 
      Fix the following compile error with CONFIG_ATA=y, CONFIG_BLOCK=n:

...
  CC      drivers/ata/libata-scsi.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-scsi.c: In function ‘ata_scsi_dev_config’:
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-scsi.c:791: warning: implicit declaration of function ‘blk_queue_max_sectors’
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-scsi.c:799: error: ‘request_queue_t’ undeclared (first use in this function)
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-scsi.c:799: error: (Each undeclared identifier is reported only once
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-scsi.c:799: error: for each function it appears in.)
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-scsi.c:799: error: ‘q’ undeclared (first use in this function)
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-scsi.c:800: warning: implicit declaration of function ‘blk_queue_max_hw_segments’
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-scsi.c: In function ‘ata_scsi_slave_config’:
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ata/libata-scsi.c:831:
warning: implicit declaration of function ‘blk_queue_max_phys_segments’
make[3]: *** [drivers/ata/libata-scsi.o] Error 1

Bug report by Jesper Juhl.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      bf2d401b
    • K
      [PATCH] libata: use correct map_db values for ICH8 · 158f30c8
      由 Kristen Carlson Accardi 提交于 
      Use valid values for ICH8 map_db.  With the old values, when the
controller was in Native mode, and SCC was 1 (drives configured for
IDE), any drive plugged into a slave port was not recognized.  For
Combined Mode (and SCC is still 1), 2 is a value value for MAP.map_value,
and needs to be recognized.
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      158f30c8
  5. 11 10月, 2006 5 次提交
  7. 05 10月, 2006 2 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
    • A
      [PATCH] libata: Don't believe bogus claims in the older PIO mode register · 46767aeb
      由 Alan Cox 提交于 
      Signed-off-by: NAlan Cox <alan@redhat.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      46767aeb
  9. 04 10月, 2006 1 次提交
  11. 03 10月, 2006 1 次提交
  13. 01 10月, 2006 1 次提交
    • J
      [libata] pata_artop: kill gcc warning · 15a7c3bb
      由 Jeff Garzik 提交于 
      gcc complains thusly:

drivers/ata/pata_artop.c: In function ‘artop_init_one’:
drivers/ata/pata_artop.c:429: warning: ‘info’ may be used uninitialized in this function

While this warning is indeed bogus, even with improved static analysis
and value range propagation, gcc will probably never be able to detect
this.

Add a BUG_ON() to trap invalid driver_data entries in the PCI table.
Signed-off-by: NJeff Garzik <jeff@garzik.org>
      15a7c3bb
  15. 30 9月, 2006 1 次提交
  17. 29 9月, 2006 2 次提交
  19. 28 9月, 2006 5 次提交
  21. 27 9月, 2006 9 次提交
  23. 26 9月, 2006 2 次提交
  25. 25 9月, 2006 3 次提交
  27. 21 9月, 2006 1 次提交