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@@ -715,13 +715,20 @@ static int hid_write_timeout(hid_device *dev, const unsigned char *data, size_t
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size_t stashed_length = length;
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unsigned char *buf;
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+ /* If the application is writing to the device, it knows how much data to write.
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+ * This matches the behavior on other platforms. It's also important when writing
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+ * to Sony game controllers over Bluetooth, where there's a CRC at the end which
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+ * must not be tampered with.
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+ */
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+ const BOOL write_exact_size = TRUE;
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+
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/* Make sure the right number of bytes are passed to WriteFile. Windows
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expects the number of bytes which are in the _longest_ report (plus
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one for the report number) bytes even if the data is a report
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which is shorter than that. Windows gives us this value in
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caps.OutputReportByteLength. If a user passes in fewer bytes than this,
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create a temporary buffer which is the proper size. */
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- if (length >= dev->output_report_length) {
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+ if (write_exact_size || length >= dev->output_report_length) {
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/* The user passed the right number of bytes. Use the buffer as-is. */
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buf = (unsigned char *) data;
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} else {
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