Changeset 05920d23 in mainline for uspace/drv/bus/usb/usbhid/multimedia/multimedia.c

Timestamp:

2011-11-07T08:56:22Z (13 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

5f047d0

Parents:

07498c1

Message:

usbhid, multimedia: Fix error paths.

Store DDF function instead of soft-state in *data pointer.

File:

• uspace/drv/bus/usb/usbhid/multimedia/multimedia.c (modified) (10 diffs)

uspace/drv/bus/usb/usbhid/multimedia/multimedia.c

@@ -67 +67 @@
         /** IPC session to the console device (for sending key events). */
         async_sess_t *console_sess;
-        /** DDF function */
-        ddf_fun_t *fun;
 } usb_multimedia_t;
 
 
 /*----------------------------------------------------------------------------*/
-/** 
+/**
  * Default handler for IPC methods not handled by DDF.
  *
@@ -88 +86 @@
 {
         usb_log_debug(NAME " default_connection_handler()\n");
-
-        usb_multimedia_t *multim_dev = (usb_multimedia_t *)fun->driver_data;
-
-        if (multim_dev == NULL) {
+        if (fun == NULL || fun->driver_data == NULL) {
                 async_answer_0(icallid, EINVAL);
                 return;
         }
+
+        usb_multimedia_t *multim_dev = fun->driver_data;
 
         async_sess_t *sess =
@@ -109 +106 @@
                 async_answer_0(icallid, EINVAL);
 }
-
-/*----------------------------------------------------------------------------*/
-
+/*----------------------------------------------------------------------------*/
 static ddf_dev_ops_t multimedia_ops = {
         .default_handler = default_connection_handler
 };
-
 /*----------------------------------------------------------------------------*/
 /**
@@ -134 +128 @@
  * @param key Key code of the key according to HID Usage Tables.
  */
-static void usb_multimedia_push_ev(usb_hid_dev_t *hid_dev,
+static void usb_multimedia_push_ev(
     usb_multimedia_t *multim_dev, int type, unsigned int key)
 {
@@ -154 +148 @@
 
         async_exch_t *exch = async_exchange_begin(multim_dev->console_sess);
-        async_msg_4(exch, KBDEV_EVENT, ev.type, ev.key, ev.mods, ev.c);
-        async_exchange_end(exch);
-}
-
-/*----------------------------------------------------------------------------*/
-
+        if (exch != NULL) {
+                async_msg_4(exch, KBDEV_EVENT, ev.type, ev.key, ev.mods, ev.c);
+                async_exchange_end(exch);
+        } else {
+                usb_log_warning("Failed to send multimedia key.\n");
+        }
+}
+/*----------------------------------------------------------------------------*/
 int usb_multimedia_init(struct usb_hid_dev *hid_dev, void **data)
 {
@@ -186 +182 @@
 
         multim_dev->console_sess = NULL;
-        multim_dev->fun = fun;
 
         //todo Autorepeat?
@@ -211 +206 @@
 
         /* Save the KBD device structure into the HID device structure. */
-        *data = multim_dev;
+        *data = fun;
 
         usb_log_debug(NAME " HID/multimedia structure initialized.\n");
         return EOK;
 }
-
-/*----------------------------------------------------------------------------*/
-
+/*----------------------------------------------------------------------------*/
 void usb_multimedia_deinit(struct usb_hid_dev *hid_dev, void *data)
 {
-        if (data != NULL) {
-                usb_multimedia_t *multim_dev = data;
+        ddf_fun_t *fun = data;
+        if (fun != NULL && fun->driver_data != NULL) {
+                usb_multimedia_t *multim_dev = fun->driver_data;
                 /* Hangup session to the console */
                 if (multim_dev->console_sess)
                         async_hangup(multim_dev->console_sess);
-                const int ret = ddf_fun_unbind(multim_dev->fun);
+                const int ret = ddf_fun_unbind(fun);
                 if (ret != EOK) {
                         usb_log_error("Failed to unbind %s function.\n",
-                            multim_dev->fun->name);
+                            fun->name);
                 } else {
-                        usb_log_debug2("%s unbound.\n", multim_dev->fun->name);
+                        usb_log_debug2("%s unbound.\n", fun->name);
                         /* This frees multim_dev too as it was stored in
                          * fun->data */
-                        ddf_fun_destroy(multim_dev->fun);
+                        ddf_fun_destroy(fun);
                 }
-        }
-}
-
-/*----------------------------------------------------------------------------*/
-
+        } else {
+                usb_log_error(
+                    "Failed to deinit multimedia subdriver, data missing.\n");
+        }
+}
+/*----------------------------------------------------------------------------*/
 bool usb_multimedia_polling_callback(struct usb_hid_dev *hid_dev, void *data)
 {
         // TODO: checks
-        if (hid_dev == NULL || data == NULL) {
+        ddf_fun_t *fun = data;
+        if (hid_dev == NULL || fun == NULL || fun->driver_data == NULL) {
                 return false;
         }
 
-        usb_multimedia_t *multim_dev = data;
+        usb_multimedia_t *multim_dev = fun->driver_data;
 
         usb_hid_report_path_t *path = usb_hid_report_path();
+        if (path == NULL)
+                return true; /* This might be a temporary failure. */
+
         int ret =
             usb_hid_report_path_append_item(path, USB_HIDUT_PAGE_CONSUMER, 0);
-        if (ret != EOK)
+        if (ret != EOK) {
+                usb_hid_report_path_free(path);
                 return true; /* This might be a temporary failure. */
+        }
 
         usb_hid_report_path_set_report_id(path, hid_dev->report_id);
@@ -263 +264 @@
             USB_HID_REPORT_TYPE_INPUT);
 
-        /*! @todo Is this iterating OK if done multiple times? 
-         *  @todo The parsing is not OK
-         */
+        //FIXME Is this iterating OK if done multiple times?
+        //FIXME The parsing is not OK. (what's wrong?)
         while (field != NULL) {
-                if(field->value != 0) {
-                        usb_log_debug(NAME " KEY VALUE(%X) USAGE(%X)\n", 
+                if (field->value != 0) {
+                        usb_log_debug(NAME " KEY VALUE(%X) USAGE(%X)\n",
                             field->value, field->usage);
                         const unsigned key =
@@ -275 +275 @@
                             usbhid_multimedia_usage_to_str(field->usage);
                         usb_log_info("Pressed key: %s\n", key_str);
-                        usb_multimedia_push_ev(hid_dev, multim_dev, KEY_PRESS,
-                                               key);
+                        usb_multimedia_push_ev(multim_dev, KEY_PRESS, key);
                 }
 
@@ -289 +288 @@
         return true;
 }
-
 /**
  * @}