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  1. 12 5月, 2012 21 次提交
  3. 10 5月, 2012 1 次提交
    • P
      sparc: fix build fail in mm/init_64.c when NEED_MULTIPLE_NODES is off · aa6f0790
      由 Paul Gortmaker 提交于 
      Commit 625d693e (linux-next)

    "sparc64: Convert over to NO_BOOTMEM."

causes the following compile failure for sparc64 allnoconfig:

  arch/sparc/mm/init_64.c:822:16: error: unused variable 'paddr'
  arch/sparc/mm/init_64.c:1759:7: error: unused variable 'node'
  arch/sparc/mm/init_64.c:809:12: error: 'memblock_nid_range' defined but not used

The paddr decl can easily be shuffled within the ifdef.  The
memblock_nid_range is just a stub function for when NEED_MULTIPLE_NODES
is off, but the only caller is within a NEED_MULTIPLE_NODES enabled
section, so we can simply delete it.

The unused "node" is slightly more interesting.  In the case of
"# CONFIG_NEED_MULTIPLE_NODES is not set" we no longer get the
definition of:

 #define NODE_DATA(nid)          (node_data[nid])

from arch/sparc/include/asm/mmzone.h - but instead we get:

 #define NODE_DATA(nid)          (&contig_page_data)

from include/linux/mmzone.h -- and since the arg is ignored,
the thing really is unused.  Rather than put in a confusing
looking __maybe_unused, simply splitting the declaration
from the assignment seemed to me to be the least offensive.

Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      aa6f0790
  5. 28 4月, 2012 1 次提交
  7. 27 4月, 2012 2 次提交
  9. 26 4月, 2012 2 次提交
  11. 24 4月, 2012 8 次提交
  13. 23 4月, 2012 4 次提交
    • B
      powerpc/mpic: Properly set default triggers · 446f6d06
      由 Benjamin Herrenschmidt 提交于 
      This gets rid of the unused default senses array, and replaces the
incorrect use of IRQ_TYPE_NONE with the new IRQ_TYPE_DEFAULT for
the initial set_trigger() call when mapping an interrupt.

This in turn makes us read the HW state and update the irq desc
accordingly.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      446f6d06
    • B
      powerpc/mpic: Fix confusion between hw_irq and virq · 3a2b4f7c
      由 Benjamin Herrenschmidt 提交于 
      mpic_is_ipi() takes a virq and immediately converts it to a hw_irq.

However, one of the two call sites calls it with a ... hw_irq. The
other call site also happens to have the hw_irq at hand, so let's
change it to just take that as an argument. Also change mpic_is_tm()
for consistency.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      3a2b4f7c
    • B
      powerpc/pmac: Don't add_timer() twice · 3027691e
      由 Benjamin Herrenschmidt 提交于 
      If the interrupt and the timeout happen roughly at the same
time, we can get into a situation where the timer function
is run while the interrupt has already been processed. In
this case, the timer function might end up doing an add_timer
on an already pending timer, causing a BUG_ON() to trigger.

Instead, just skip the whole timeout operation if we see that
the timer is pending. The spinlock ensures that the only way
that happens is if we already started a new operation and thus
the timeout can be ignored.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      3027691e
    • G
      powerpc/eeh: Fix crash caused by null eeh_dev · 2ef822c5
      由 Gavin Shan 提交于 
      The problem was reported by Anton Blanchard. While EEH error
happened to the PCI device without the corresponding device
driver, kernel crash was seen. Eventually, I successfully
reproduced the problem on Firebird-L machine with utility
"errinjct". Initially, the device driver for Emulex ethernet
MAC has been disabled from .config and force data parity on
the Emulex ethernet MAC with help of "errinjct". Eventually,
I saw the kernel crash after issueing couple of "lspci -v"
command.

The root cause behind is that the PCI device, including the
reference to the corresponding eeh device, will be removed
from the system while EEH does recovery. Afterwards, the
PCI device will be probed again and added into the system
accordingly. So it's not safe to retrieve the eeh device from
the corresponding PCI device after the PCI device has been removed
and not added again.

The patch fixes the issue and retrieve the eeh device from OF node
instead of PCI device after the PCI device has been removed.
Signed-off-by: NGavin Shan <shangw@linux.vnet.ibm.com>
Tested-by: NAnton Blanchard <anton@samba.org>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
      2ef822c5
  15. 22 4月, 2012 1 次提交