Changeset a6567ed in mainline for uspace/drv/usbmouse/mouse.c

Timestamp:

2011-03-02T18:54:49Z (14 years ago)

Author:

Vojtech Horky <vojtechhorky@…>

Branches:

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

Children:

820aba32

Parents:

d70e0a3c

Message:

Correct endpoint initialization in mouse driver

File:

• uspace/drv/usbmouse/mouse.c (modified) (2 diffs)

uspace/drv/usbmouse/mouse.c

@@ -46 +46 @@
         assert(mouse);
 
+        size_t buffer_size = mouse->poll_pipe.max_packet_size;
+
+        if (buffer_size < 4) {
+                usb_log_error("Weird mouse, results will be skewed.\n");
+                buffer_size = 4;
+        }
+
+        uint8_t *buffer = malloc(buffer_size);
+        if (buffer == NULL) {
+                usb_log_error("Out of memory, poll fibril aborted.\n");
+                return ENOMEM;
+        }
+
         while (true) {
                 async_usleep(10 * 1000);
 
-                uint8_t buffer[8];
                 size_t actual_size;
 
@@ -55 +67 @@
                 usb_endpoint_pipe_start_session(&mouse->poll_pipe);
 
-                usb_endpoint_pipe_read(&mouse->poll_pipe, buffer, 8, &actual_size);
+                usb_endpoint_pipe_read(&mouse->poll_pipe,
+                    buffer, buffer_size, &actual_size);
 
                 usb_endpoint_pipe_end_session(&mouse->poll_pipe);