V4L/DVB (10237): pvrusb2: Generate a device-unique identifier
Implement a new internal function to create a string device
identifier. This ID stays with the specific device, making it useful
to user space to identify specific devices. We use the serial number
if available; otherwise we give up and just spit out a unit/instance ID.
Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h b/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h
index de7ee72..d96f0f5 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h
@@ -195,8 +195,20 @@
struct mutex big_lock_mutex;
int big_lock_held; /* For debugging */
+ /* This is a simple string which identifies the instance of this
+ driver. It is unique within the set of existing devices, but
+ there is no attempt to keep the name consistent with the same
+ physical device each time. */
char name[32];
+ /* This is a simple string which identifies the physical device
+ instance itself - if possible. (If not possible, then it is
+ based on the specific driver instance, similar to name above.)
+ The idea here is that userspace might hopefully be able to use
+ this recognize specific tuners. It will encode a serial number,
+ if available. */
+ char identifier[32];
+
/* I2C stuff */
struct i2c_adapter i2c_adap;
struct i2c_algorithm i2c_algo;
