PCI: rcar: Check if device is runtime suspended instead of __clk_is_enabled()

Replace __clk_is_enabled() with pm_runtime_suspended(),
as __clk_is_enabled() was checking the wrong bus clock
and caused the following build error too:
  arm-linux-gnueabi-ld: drivers/pci/controller/pcie-rcar-host.o: in function `rcar_pcie_aarch32_abort_handler':
  pcie-rcar-host.c:(.text+0xdd0): undefined reference to `__clk_is_enabled'

Link: https://lore.kernel.org/r/[email protected]
Fixes: a115b1b ("PCI: rcar: Add L1 link state fix into data abort hook")
Signed-off-by: Marek Vasut <[email protected]>
Signed-off-by: Lorenzo Pieralisi <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>
Acked-by: Randy Dunlap <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Bjorn Helgaas <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Lorenzo Pieralisi <[email protected]>
Cc: Stephen Boyd <[email protected]>
Cc: Wolfram Sang <[email protected]>
Cc: Yoshihiro Shimoda <[email protected]>
Cc: [email protected]

Author: Marek Vasut

drivers/pci/controller/pcie-rcar-host.c

@@ -50,10 +50,10 @@ struct rcar_msi {
  */
 static void __iomem *pcie_base;
 /*
- * Static copy of bus clock pointer, so we can check whether the clock
- * is enabled or not.
+ * Static copy of PCIe device pointer, so we can check whether the
+ * device is runtime suspended or not.
  */
-static struct clk *pcie_bus_clk;
+static struct device *pcie_dev;
 #endif
 
 /* Structure representing the PCIe interface */
@@ -792,7 +792,7 @@ static int rcar_pcie_get_resources(struct rcar_pcie_host *host)
 #ifdef CONFIG_ARM
 	/* Cache static copy for L1 link state fixup hook on aarch32 */
 	pcie_base = pcie->base;
-	pcie_bus_clk = host->bus_clk;
+	pcie_dev = pcie->dev;
 #endif
 
 	return 0;
@@ -1062,7 +1062,7 @@ static int rcar_pcie_aarch32_abort_handler(unsigned long addr,
 
 	spin_lock_irqsave(&pmsr_lock, flags);
 
-	if (!pcie_base || !__clk_is_enabled(pcie_bus_clk)) {
+	if (!pcie_base || pm_runtime_suspended(pcie_dev)) {
 		ret = 1;
 		goto unlock_exit;
 	}