[PATCH v4 2/3] hw/i2c/smbus_slave: Add object path on error prints

[Joe Komlodi <komlodi@google.com>]

The current logging doesn't tell us which specific smbus device is an
error state.

Signed-off-by: Joe Komlodi <komlodi@google.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/i2c/smbus_slave.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/hw/i2c/smbus_slave.c b/hw/i2c/smbus_slave.c
index 1300c9ec72..9f9afc25a4 100644
--- a/hw/i2c/smbus_slave.c
+++ b/hw/i2c/smbus_slave.c
@@ -25,11 +25,15 @@
 #define DPRINTF(fmt, ...) \
 do { printf("smbus(%02x): " fmt , dev->i2c.address, ## __VA_ARGS__); } while (0)
 #define BADF(fmt, ...) \
-do { fprintf(stderr, "smbus: error: " fmt , ## __VA_ARGS__); exit(1);} while (0)
+do { g_autofree char *qom_path = object_get_canonical_path(OBJECT(dev));  \
+    fprintf(stderr, "%s: smbus: error: " fmt , qom_path, ## __VA_ARGS__); \
+            exit(1); } while (0)
 #else
 #define DPRINTF(fmt, ...) do {} while(0)
 #define BADF(fmt, ...) \
-do { fprintf(stderr, "smbus: error: " fmt , ## __VA_ARGS__);} while (0)
+do { g_autofree char *qom_path = object_get_canonical_path(OBJECT(dev));  \
+    fprintf(stderr, "%s: smbus: error: " fmt , qom_path, ## __VA_ARGS__); \
+             } while (0)
 #endif
 
 enum {
-- 
2.44.0.rc0.258.g7320e95886-goog