pcmcia: assert locking to struct pcmcia_device
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
diff --git a/Documentation/pcmcia/locking.txt b/Documentation/pcmcia/locking.txt
index 5f25de4..d6251056 100644
--- a/Documentation/pcmcia/locking.txt
+++ b/Documentation/pcmcia/locking.txt
@@ -90,3 +90,28 @@
struct list_head devices_list;
u8 device_count;
struct pcmcia_state;
+
+
+3. Per PCMCIA-device Data:
+--------------------------
+
+The "main" struct pcmcia_devie is protected as follows (read-only fields
+or single-use fields not mentioned):
+
+
+- by pcmcia_socket->ops_mutex:
+ struct list_head socket_device_list;
+ struct config_t *function_config;
+ u16 _irq:1;
+ u16 _io:1;
+ u16 _win:4;
+ u16 _locked:1;
+ u16 allow_func_id_match:1;
+ u16 suspended:1;
+ u16 _removed:1;
+
+- by the PCMCIA driver:
+ io_req_t io;
+ irq_req_t irq;
+ config_req_t conf;
+ window_handle_t win;
