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| author | Robin Getz <rgetz@blackfin.uclinux.org> | 2008-10-09 11:06:32 +0200 |
|---|---|---|
| committer | Bryan Wu <cooloney@kernel.org> | 2008-10-09 11:06:32 +0200 |
| commit | 1d5ff7e27d2ca30cd3f61afd353b03dd67330818 (patch) | |
| tree | ceadc8dd11d69c438eca73285c1d8faab7b58977 /arch/blackfin/kernel/traps.c | |
| parent | Blackfin arch: correct icache size in show_cpuinfo(), let c_start() return pr... (diff) | |
| download | linux-1d5ff7e27d2ca30cd3f61afd353b03dd67330818.tar.xz linux-1d5ff7e27d2ca30cd3f61afd353b03dd67330818.zip | |
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/kernel/traps.c')
| -rw-r--r-- | arch/blackfin/kernel/traps.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c index 1a3c4daf557a..709c247b7016 100644 --- a/arch/blackfin/kernel/traps.c +++ b/arch/blackfin/kernel/traps.c @@ -1025,8 +1025,19 @@ void show_regs(struct pt_regs *fp) printk(KERN_NOTICE "\n" KERN_NOTICE "SEQUENCER STATUS:\t\t%s\n", print_tainted()); printk(KERN_NOTICE " SEQSTAT: %08lx IPEND: %04lx SYSCFG: %04lx\n", (long)fp->seqstat, fp->ipend, fp->syscfg); - printk(KERN_NOTICE " HWERRCAUSE: 0x%lx\n", - (fp->seqstat & SEQSTAT_HWERRCAUSE) >> 14); + if ((fp->seqstat & SEQSTAT_EXCAUSE) == VEC_HWERR) { + printk(KERN_NOTICE " HWERRCAUSE: 0x%lx\n", + (fp->seqstat & SEQSTAT_HWERRCAUSE) >> 14); +#ifdef EBIU_ERRMST + /* If the error was from the EBIU, print it out */ + if (bfin_read_EBIU_ERRMST() & CORE_ERROR) { + printk(KERN_NOTICE " EBIU Error Reason : 0x%04x\n", + bfin_read_EBIU_ERRMST()); + printk(KERN_NOTICE " EBIU Error Address : 0x%08x\n", + bfin_read_EBIU_ERRADD()); + } +#endif + } printk(KERN_NOTICE " EXCAUSE : 0x%lx\n", fp->seqstat & SEQSTAT_EXCAUSE); for (i = 6; i <= 15 ; i++) { |