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  1. 08 Mar, 2007 5 commits
    • David Gibson's avatar
      [POWERPC] Allow duplicate lmb_reserve() calls · eb6de286
      David Gibson authored 
      At present calling lmb_reserve() (and hence lmb_add_region()) twice
for exactly the same memory region will cause strange behaviour.

This makes life difficult when booting from a flat device tree with
memory reserve map.  Which regions are automatically reserved by the
kernel has changed over time, so it's quite possible a newer kernel
could attempt to auto-reserve a region which is also explicitly listed
in the device tree's reserve map, leading to trouble.

This patch avoids the problem by making lmb_reserve() ignore a call to
reserve a previously reserved region.  It also removes a now redundant
test designed to avoid one specific case of the problem noted above.

At present, this patch deals only with duplicate reservations of an
identical region.  Attempting to reserve two different, but
overlapping regions will still cause problems.  I might post another
patch later dealing with this case, but I'm avoiding it now since it
is substantially more complicated to deal with, less likely to occur
and more likely to indicate a genuine bug elsewhere if it does occur.
Signed-off-by: default avatarDavid Gibson <dwg@au1.ibm.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
      eb6de286
    • Adrian Bunk's avatar
      [POWERPC] Unexport mac_hid_mouse_emulate_buttons · 83ddcf5d
      Adrian Bunk authored 
      This patch removes the unused
EXPORT_SYMBOL(mac_hid_mouse_emulate_buttons).
Signed-off-by: default avatarAdrian Bunk <bunk@stusta.de>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
      83ddcf5d
    • Stuart Yoder's avatar
      [POWERPC] Remove interrupt-controller as a property under /chosen · d1bff9ed
      Stuart Yoder authored 
       Remove interrupt-controller as a valid property under /chosen in
 the documentation.  There is a consensus that an
 interrupt-controller property does not belong under /chosen.
 /chosen is specifically for dynamic properties set at runtime.
Signed-off-by: default avatarStuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
      d1bff9ed
    • Paul Mackerras's avatar
      [POWERPC] Harden validate_sp against stack corruption · bb72c481
      Paul Mackerras authored 
      If something has overflowed or corrupted the stack and causes an oops,
and we try to print a stack trace, that will call validate_sp, which
can itself cause an oops if the cpu field of the thread_info struct at
the bottom of the stack has been corrupted (if CONFIG_IRQSTACKS is
set).  This makes debugging harder.

To avoid the second oops, this adds a check to make sure that the cpu
number is reasonable before using it to check whether the stack is on
the softirq or hardirq stack.
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
      bb72c481
    • Andrew Morton's avatar
      [POWERPC] Fix compile error in prom.h · 99ddef9b
      Andrew Morton authored 
      In file included from include/asm/pci.h:20,
                 from include/linux/pci.h:751,
                 from arch/powerpc/sysdev/dart_iommu.c:36:
include/asm/prom.h: In function `of_irq_to_resource':
include/asm/prom.h:341: warning: implicit declaration of function `irq_of_parse_and_map'
include/asm/prom.h:345: error: `NO_IRQ' undeclared (first use in this function)
include/asm/prom.h:345: error: (Each undeclared identifier is reported only once
include/asm/prom.h:345: error: for each function it appears in.)

Seems that prom.h has always wanted irq.h.

Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
      99ddef9b
  3. 07 Mar, 2007 35 commits
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