I used 0 as the device id for the bus root, neglecting the fact that
device 0 is a valid id in Unisys's configuration.  Modify this to
use UINT_MAX instead as a unique number.

As fallout from this change it was noticed the bus_no and dev_no was not
defined the same way consistently.  Fix visorbus.h to use u32 there.  Fix
the resulting printk warning too.

Signed-off-by: Don Zickus <dzic...@redhat.com>
---
 drivers/staging/unisys/include/visorbus.h       | 4 ++--
 drivers/staging/unisys/visorbus/visorbus_main.c | 2 +-
 drivers/staging/unisys/visorbus/visorchipset.c  | 6 ++++--
 3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/unisys/include/visorbus.h 
b/drivers/staging/unisys/include/visorbus.h
index 3152ba4..c60f7d4 100644
--- a/drivers/staging/unisys/include/visorbus.h
+++ b/drivers/staging/unisys/include/visorbus.h
@@ -150,8 +150,8 @@ struct visor_device {
        struct semaphore visordriver_callback_lock;
        bool pausing;
        bool resuming;
-       unsigned long chipset_bus_no;
-       unsigned long chipset_dev_no;
+       u32 chipset_bus_no;
+       u32 chipset_dev_no;
        struct visorchipset_state state;
        uuid_le type;
        uuid_le inst;
diff --git a/drivers/staging/unisys/visorbus/visorbus_main.c 
b/drivers/staging/unisys/visorbus/visorbus_main.c
index 7667b15..e5731b1 100644
--- a/drivers/staging/unisys/visorbus/visorbus_main.c
+++ b/drivers/staging/unisys/visorbus/visorbus_main.c
@@ -572,7 +572,7 @@ static ssize_t client_bus_info_show(struct device *dev,
                if (vdev->name)
                        partition_name = vdev->name;
                x = snprintf(p, remain,
-                            "Client device / client driver info for %s 
partition (vbus #%ld):\n",
+                            "Client device / client driver info for %s 
partition (vbus #%d):\n",
                             partition_name, vdev->chipset_dev_no);
                p += x;
                remain -= x;
diff --git a/drivers/staging/unisys/visorbus/visorchipset.c 
b/drivers/staging/unisys/visorbus/visorchipset.c
index b063f2b..24338e9 100644
--- a/drivers/staging/unisys/visorbus/visorchipset.c
+++ b/drivers/staging/unisys/visorbus/visorchipset.c
@@ -56,6 +56,8 @@
 #define UNISYS_SPAR_ID_ECX 0x70537379
 #define UNISYS_SPAR_ID_EDX 0x34367261
 
+#define BUS_ROOT_DEVICE        UINT_MAX
+
 /*
  * Module parameters
  */
@@ -727,8 +729,8 @@ static int match_visorbus_dev_by_id(struct device *dev, 
void *data)
        u32 bus_no = id->bus_no;
        u32 dev_no = id->dev_no;
 
-       if (((bus_no == -1) || (vdev->chipset_bus_no == bus_no)) &&
-           ((dev_no == -1) || (vdev->chipset_dev_no == dev_no)))
+       if ((vdev->chipset_bus_no == bus_no) &&
+           (vdev->chipset_dev_no == dev_no))
                return 1;
 
        return 0;
-- 
2.1.0

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