[PATCH 1/3] PCI: rzg3s: Disable refclk on probe failure

[Prabhakar]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>

rzg3s_pcie_host_init_port() enables the PCIe reference clock using
clk_prepare_enable(), but if rzg3s_pcie_probe() subsequently fails, for
example because pci_host_probe() returns an error, the probe error path
only releases the clock handle with clk_put().

Balance clk_prepare_enable() by calling clk_disable_unprepare() in the
probe cleanup path before releasing the clock, ensuring the reference
clock is properly disabled on probe failure.

Fixes: 7ef502fb35b28 ("PCI: Add Renesas RZ/G3S host controller driver")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
---
 drivers/pci/controller/pcie-rzg3s-host.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pci/controller/pcie-rzg3s-host.c b/drivers/pci/controller/pcie-rzg3s-host.c
index a1a78bdb7af1..01488660ab08 100644
--- a/drivers/pci/controller/pcie-rzg3s-host.c
+++ b/drivers/pci/controller/pcie-rzg3s-host.c
@@ -1897,6 +1897,7 @@ static int rzg3s_pcie_probe(struct platform_device *pdev)
 	return 0;
 
 host_probe_teardown:
+	clk_disable_unprepare(host->port.refclk);
 	rzg3s_pcie_teardown_irqdomain(host);
 	host->data->config_deinit(host);
 rpm_put:
-- 
2.54.0