From: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Date: Thu, 17 Sep 2015 23:01:45 +0000 (+0300)
Subject: vme: print unhandled VME access errors
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=448535a35010253f21ed913a05abe3d0adb47743;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

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>
---

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);