pcmcia: assert locking to struct pcmcia_device

Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

1 files changed, 25 insertions, 0 deletions

diff --git a/Documentation/pcmcia/locking.txt b/Documentation/pcmcia/locking.txt
index 5f25de4cdb42..d6251056128f 100644
--- a/Documentation/pcmcia/locking.txt
+++ b/Documentation/pcmcia/locking.txt
@@ -90,3 +90,28 @@ or single-use fields not mentioned):
         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;