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  11. 17 Dec, 2010 2 commits
    • Yusuke Goda's avatar
      ARM: mach-shmobile: mackerel: Add mmcif support · 41491b9a
      Yusuke Goda authored
      v2
       Add comment of J22 and OCR field.
      Signed-off-by: default avatarYusuke Goda <yusuke.goda.sx@renesas.com>
      Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
      41491b9a
    • Magnus Damm's avatar
      ARM: mach-shmobile: INTC interrupt priority level demux fix · 1cf215a5
      Magnus Damm authored
      Fix interrupt priority level handling on SH-Mobile ARM.
      
      SH-Mobile ARM platforms using multiple interrupt priority
      levels need this patch to fix a potential dead lock that
      may occur if multiple interrupts with different levels
      are pending simultaneously.
      
      The default INTC configuration is to use the same priority
      level for all interrupts, so this issue does not trigger by
      default. It is however common for board code to override the
      interrupt priority for certain interrupt sources depending
      on the application. Without this fix such boards may lock up.
      
      In detail, this patch updates the INTC code in entry-macro.S
      to make sure that the INTLVLA register gets set as expected.
      
      To trigger this bug modify the board specific code to adjust
      the interrupt priority level for the ethernet chip. After
      changing the priority level simply use flood ping to drown
      the board with interrupts.
      
      This patch applies to INTCA-based processors such as sh7372,
      sh7377 and sh7372. GIC-based processors are not affected.
      
      Suitable for v2.6.37-rc and stable from v2.6.34 to v2.6.36.
      
      Cc: stable@kernel.org
      Signed-off-by: default avatarMagnus Damm <damm@opensource.se>
      Tested-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
      Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
      1cf215a5