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mangoh-drivers
Commit 818a1c87 by David Clark
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Updated queue write function to pull rd offset only if amount

available is less than what is required to execute the write. TODO: Try moving the rd offset to the interrupt hndlr and update MT7697 code to set the interrupt and queue flag when the rd offset is updated. See which method is best......
parent c6878f74
Showing with 14 additions and 12 deletions
linux_kernel_modules/mt7697q/queue.c
......@@ -734,21 +734,23 @@ size_t mt7697q_write(void *hndl, const u32 *buff, size_t num)
mutex_lock(&qs->qinfo->mutex);
ret = mt7697q_pull_rd_ptr(qs);
if (ret < 0) {
dev_err(qs->qinfo->dev,
"%s(): mt7697q_pull_rd_ptr() failed(%d)\n",
__func__, ret);
goto cleanup;
}
avail = mt7697q_get_free_words(qs);
dev_dbg(qs->qinfo->dev, "%s(): free words(%u)\n", __func__, avail);
if (avail < num) {
dev_warn(qs->qinfo->dev, "%s(): queue avail(%u < %u)\n",
__func__, avail, num);
ret = -EAGAIN;
goto cleanup;
ret = mt7697q_pull_rd_ptr(qs);
if (ret < 0) {
dev_err(qs->qinfo->dev,
"%s(): mt7697q_pull_rd_ptr() failed(%d)\n",
__func__, ret);
goto cleanup;
}
if (avail < num) {
dev_warn(qs->qinfo->dev, "%s(): queue avail(%u < %u)\n",
__func__, avail, num);
ret = -EAGAIN;
goto cleanup;
}
}
buff_words = BF_GET(qs->data.flags, MT7697_QUEUE_FLAGS_NUM_WORDS_OFFSET,
......
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