vme: print unhandled VME access errors

This will enable error messages for accesses done through mmap.

Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Acked-by: Martyn Welch <martyn@welchs.me.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/vme/vme.c b/drivers/vme/vme.c
index 7a10d926ebb4..72924b0632b7 100644
--- a/drivers/vme/vme.c
+++ b/drivers/vme/vme.c
@@ -1028,6 +1028,7 @@ void vme_bus_error_handler(struct vme_bridge *bridge,
 {
         struct list_head *handler_pos = NULL;
         struct vme_error_handler *handler;
+        int handler_triggered = 0;
         u32 aspace = vme_get_aspace(am);
 
         list_for_each(handler_pos, &bridge->vme_error_handlers) {
@@ -1040,8 +1041,14 @@ void vme_bus_error_handler(struct vme_bridge *bridge,
                                 handler->first_error = address;
                         if (handler->num_errors != UINT_MAX)
                                 handler->num_errors++;
+                        handler_triggered = 1;
                 }
         }
+
+        if (!handler_triggered)
+                dev_err(bridge->parent,
+                        "Unhandled VME access error at address 0x%llx\n",
+                        address);
 }
 EXPORT_SYMBOL(vme_bus_error_handler);