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authorRobin Getz <rgetz@blackfin.uclinux.org>2008-10-09 17:06:32 +0800
committerBryan Wu <cooloney@kernel.org>2008-10-09 17:06:32 +0800
commit1d5ff7e27d2ca30cd3f61afd353b03dd67330818 (patch)
treeceadc8dd11d69c438eca73285c1d8faab7b58977 /arch/blackfin/mach-common
parent55f2feae3a1e075d9b4b0e73a6024f3e25717878 (diff)
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')
-rw-r--r--arch/blackfin/mach-common/interrupt.S9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/blackfin/mach-common/interrupt.S b/arch/blackfin/mach-common/interrupt.S
index 647f0f522910..4a2ec7a9675a 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;