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Diffstat (limited to 'arch/arm/mach-mvebu/mvebu-soc-id.c')
-rw-r--r--arch/arm/mach-mvebu/mvebu-soc-id.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/arm/mach-mvebu/mvebu-soc-id.c b/arch/arm/mach-mvebu/mvebu-soc-id.c
index f3d4cf53f746..09520e19b78e 100644
--- a/arch/arm/mach-mvebu/mvebu-soc-id.c
+++ b/arch/arm/mach-mvebu/mvebu-soc-id.c
@@ -108,7 +108,18 @@ static int __init mvebu_soc_id_init(void)
iounmap(pci_base);
res_ioremap:
- clk_disable_unprepare(clk);
+ /*
+ * If the PCIe unit is actually enabled and we have PCI
+ * support in the kernel, we intentionally do not release the
+ * reference to the clock. We want to keep it running since
+ * the bootloader does some PCIe link configuration that the
+ * kernel is for now unable to do, and gating the clock would
+ * make us loose this precious configuration.
+ */
+ if (!of_device_is_available(child) || !IS_ENABLED(CONFIG_PCI_MVEBU)) {
+ clk_disable_unprepare(clk);
+ clk_put(clk);
+ }
clk_err:
of_node_put(child);