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-rw-r--r--arch/parisc/kernel/cache.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index 393822f167..422f3e1e6d 100644
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -264,6 +264,10 @@ parisc_cache_init(void)
icache_stride = CAFL_STRIDE(cache_info.ic_conf);
#undef CAFL_STRIDE
+ /* stride needs to be non-zero, otherwise cache flushes will not work */
+ WARN_ON(cache_info.dc_size && dcache_stride == 0);
+ WARN_ON(cache_info.ic_size && icache_stride == 0);
+
if ((boot_cpu_data.pdc.capabilities & PDC_MODEL_NVA_MASK) ==
PDC_MODEL_NVA_UNSUPPORTED) {
printk(KERN_WARNING "parisc_cache_init: Only equivalent aliasing supported!\n");