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Blackfin arch: Fix bug - HW Errors never recover on BF548

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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>
This commit is contained in:
Robin Getz
2008-10-09 17:06:32 +08:00
committed by Bryan Wu
parent 55f2feae3a
commit 1d5ff7e27d
2 changed files with 22 additions and 2 deletions
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9
arch/blackfin/mach-common/interrupt.S
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@@ -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;