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| author | Robin Getz <rgetz@blackfin.uclinux.org> | 2008-10-09 09:06:32 (GMT) |
|---|---|---|
| committer | Bryan Wu <cooloney@kernel.org> | 2008-10-09 09:06:32 (GMT) |
| commit | 1d5ff7e27d2ca30cd3f61afd353b03dd67330818 (patch) | |
| tree | ceadc8dd11d69c438eca73285c1d8faab7b58977 /arch/blackfin/mach-common/interrupt.S | |
| parent | 55f2feae3a1e075d9b4b0e73a6024f3e25717878 (diff) | |
| download | linux-1d5ff7e27d2ca30cd3f61afd353b03dd67330818.tar.xz | |
Blackfin arch: Fix bug - HW Errors never recover on BF548
The kernel does not properly clear the EBIU Error Master (EBIU_ERRMST) Register
on BF548, which causes the kernel to panic.
We need to make sure that we clear the EBIU_ERRMST (necessary on BF54x)
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/mach-common/interrupt.S')
| -rw-r--r-- | arch/blackfin/mach-common/interrupt.S | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/blackfin/mach-common/interrupt.S b/arch/blackfin/mach-common/interrupt.S index 647f0f5..4a2ec7a 100644 --- a/arch/blackfin/mach-common/interrupt.S +++ b/arch/blackfin/mach-common/interrupt.S @@ -179,7 +179,16 @@ ENTRY(_evt_ivhw) call _trap_c; SP += 12; +#ifdef EBIU_ERRMST + /* make sure EBIU_ERRMST is clear */ + p0.l = LO(EBIU_ERRMST); + p0.h = HI(EBIU_ERRMST); + r0.l = (CORE_ERROR | CORE_MERROR); + w[p0] = r0.l; +#endif + call _ret_from_exception; + .Lcommon_restore_all_sys: RESTORE_ALL_SYS rti; |