[PATCH 2/2] mailbox: rockchip: drop unneeded runtime pointer (pclk)

[Linmao Li]

The pclk pointer is only used in rockchip_mbox_probe() and is not needed
after probe completes.

Make it a local variable and drop it from struct rockchip_mbox, which
saves a little bit of runtime memory.

Signed-off-by: Linmao Li <lilinmao at kylinos.cn>
---
 drivers/mailbox/rockchip-mailbox.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/mailbox/rockchip-mailbox.c b/drivers/mailbox/rockchip-mailbox.c
index d55cbf7f2cb6..bc2f9dd798dd 100644
--- a/drivers/mailbox/rockchip-mailbox.c
+++ b/drivers/mailbox/rockchip-mailbox.c
@@ -40,7 +40,6 @@ struct rockchip_mbox_chan {
 
 struct rockchip_mbox {
 	struct mbox_controller mbox;
-	struct clk *pclk;
 	void __iomem *mbox_base;
 
 	/* The maximum size of buf for each channel */
@@ -166,6 +165,7 @@ static int rockchip_mbox_probe(struct platform_device *pdev)
 	struct rockchip_mbox *mb;
 	const struct rockchip_mbox_data *drv_data;
 	struct resource *res;
+	struct clk *pclk;
 	int ret, irq, i;
 
 	if (!pdev->dev.of_node)
@@ -196,9 +196,9 @@ static int rockchip_mbox_probe(struct platform_device *pdev)
 	/* Each channel has two buffers for A2B and B2A */
 	mb->buf_size = (size_t)resource_size(res) / (drv_data->num_chans * 2);
 
-	mb->pclk = devm_clk_get_enabled(&pdev->dev, "pclk_mailbox");
-	if (IS_ERR(mb->pclk))
-		return dev_err_probe(&pdev->dev, PTR_ERR(mb->pclk),
+	pclk = devm_clk_get_enabled(&pdev->dev, "pclk_mailbox");
+	if (IS_ERR(pclk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(pclk),
 				     "failed to get and enable pclk_mailbox clock\n");
 
 	for (i = 0; i < mb->mbox.num_chans; i++) {
-- 
2.25.1