2 files changed, 7 insertions, 4 deletions

diff --git a/arch/blackfin/mach-common/arch_checks.c b/arch/blackfin/mach-common/arch_checks.c
index 9dbafcdcf479..f2ca211a76a0 100644
--- a/arch/blackfin/mach-common/arch_checks.c
+++ b/arch/blackfin/mach-common/arch_checks.c
@@ -57,3 +57,8 @@
          (!defined(CONFIG_BFIN_EXTMEM_DCACHEABLE) && defined(CONFIG_BFIN_L2_WRITEBACK)))
 # error You are exposing Anomaly 220 in this config, either config L2 as Write Through, or make External Memory WB.
 #endif
+
+#if ANOMALY_05000475 && \
+        (defined(CONFIG_BFIN_EXTMEM_WRITEBACK) || defined(CONFIG_BFIN_L2_WRITEBACK))
+# error "Anomaly 475 does not allow you to use Write Back cache with L2 or External Memory"
+#endif
diff --git a/arch/blackfin/mach-common/smp.c b/arch/blackfin/mach-common/smp.c
index d98585f3237d..d92b168c8328 100644
--- a/arch/blackfin/mach-common/smp.c
+++ b/arch/blackfin/mach-common/smp.c
@@ -276,10 +276,9 @@ void smp_send_reschedule(int cpu)
         if (cpu_is_offline(cpu))
                 return;
 
-        msg = kmalloc(sizeof(*msg), GFP_ATOMIC);
+        msg = kzalloc(sizeof(*msg), GFP_ATOMIC);
         if (!msg)
                 return;
-        memset(msg, 0, sizeof(msg));
         INIT_LIST_HEAD(&msg->list);
         msg->type = BFIN_IPI_RESCHEDULE;
 
@@ -305,10 +304,9 @@ void smp_send_stop(void)
         if (cpus_empty(callmap))
                 return;
 
-        msg = kmalloc(sizeof(*msg), GFP_ATOMIC);
+        msg = kzalloc(sizeof(*msg), GFP_ATOMIC);
         if (!msg)
                 return;
-        memset(msg, 0, sizeof(msg));
         INIT_LIST_HEAD(&msg->list);
         msg->type = BFIN_IPI_CPU_STOP;