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Subject[PATCH 1/7] mailbox: zynq: Remove unused zynqmp_ipi_peek_data
Date
This op was ambiguously specified, and the way it was interpreted for
this implementation is not useful. It has no users, so remove it.

Signed-off-by: Hector Martin <marcan@marcan.st>
---
drivers/mailbox/zynqmp-ipi-mailbox.c | 41 ----------------------------
1 file changed, 41 deletions(-)

diff --git a/drivers/mailbox/zynqmp-ipi-mailbox.c b/drivers/mailbox/zynqmp-ipi-mailbox.c
index 31a0fa914274..7c3ef7c8078e 100644
--- a/drivers/mailbox/zynqmp-ipi-mailbox.c
+++ b/drivers/mailbox/zynqmp-ipi-mailbox.c
@@ -177,46 +177,6 @@ static irqreturn_t zynqmp_ipi_interrupt(int irq, void *data)
return IRQ_NONE;
}

-/**
- * zynqmp_ipi_peek_data - Peek to see if there are any rx messages.
- *
- * @chan: Channel Pointer
- *
- * Return: 'true' if there is pending rx data, 'false' if there is none.
- */
-static bool zynqmp_ipi_peek_data(struct mbox_chan *chan)
-{
- struct device *dev = chan->mbox->dev;
- struct zynqmp_ipi_mbox *ipi_mbox = dev_get_drvdata(dev);
- struct zynqmp_ipi_mchan *mchan = chan->con_priv;
- int ret;
- u64 arg0;
- struct arm_smccc_res res;
-
- if (WARN_ON(!ipi_mbox)) {
- dev_err(dev, "no platform drv data??\n");
- return false;
- }
-
- arg0 = SMC_IPI_MAILBOX_STATUS_ENQUIRY;
- zynqmp_ipi_fw_call(ipi_mbox, arg0, 0, &res);
- ret = (int)(res.a0 & 0xFFFFFFFF);
-
- if (mchan->chan_type == IPI_MB_CHNL_TX) {
- /* TX channel, check if the message has been acked
- * by the remote, if yes, response is available.
- */
- if (ret < 0 || ret & IPI_MB_STATUS_SEND_PENDING)
- return false;
- else
- return true;
- } else if (ret > 0 && ret & IPI_MB_STATUS_RECV_PENDING) {
- /* RX channel, check if there is message arrived. */
- return true;
- }
- return false;
-}
-
/**
* zynqmp_ipi_last_tx_done - See if the last tx message is sent
*
@@ -387,7 +347,6 @@ static void zynqmp_ipi_shutdown(struct mbox_chan *chan)
static const struct mbox_chan_ops zynqmp_ipi_chan_ops = {
.startup = zynqmp_ipi_startup,
.shutdown = zynqmp_ipi_shutdown,
- .peek_data = zynqmp_ipi_peek_data,
.last_tx_done = zynqmp_ipi_last_tx_done,
.send_data = zynqmp_ipi_send_data,
};
--
2.35.1
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