[PATCH 2/3] PCI: mobiveil: Refactor link status check

[Hans Zhang <18255117159@163.com>]

Update ls_g4_pcie_link_up() to return bool and simplify the LTSSM state
check. Align function signature in pcie-mobiveil.h to match the change,
ensuring consistency across the Mobiveil PCIe driver.

Signed-off-by: Hans Zhang <18255117159@163.com>
---
 drivers/pci/controller/mobiveil/pcie-layerscape-gen4.c | 9 ++-------
 drivers/pci/controller/mobiveil/pcie-mobiveil.h        | 2 +-
 2 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/pci/controller/mobiveil/pcie-layerscape-gen4.c b/drivers/pci/controller/mobiveil/pcie-layerscape-gen4.c
index 5af22bee913b..1cf014051296 100644
--- a/drivers/pci/controller/mobiveil/pcie-layerscape-gen4.c
+++ b/drivers/pci/controller/mobiveil/pcie-layerscape-gen4.c
@@ -53,18 +53,13 @@ static inline void ls_g4_pcie_pf_writel(struct ls_g4_pcie *pcie,
 	iowrite32(val, pcie->pci.csr_axi_slave_base + PCIE_PF_OFF + off);
 }
 
-static int ls_g4_pcie_link_up(struct mobiveil_pcie *pci)
+static bool ls_g4_pcie_link_up(struct mobiveil_pcie *pci)
 {
 	struct ls_g4_pcie *pcie = to_ls_g4_pcie(pci);
 	u32 state;
 
 	state = ls_g4_pcie_pf_readl(pcie, PCIE_PF_DBG);
-	state =	state & PF_DBG_LTSSM_MASK;
-
-	if (state == PF_DBG_LTSSM_L0)
-		return 1;
-
-	return 0;
+	return (state & PF_DBG_LTSSM_MASK) == PF_DBG_LTSSM_L0;
 }
 
 static void ls_g4_pcie_disable_interrupt(struct ls_g4_pcie *pcie)
diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil.h b/drivers/pci/controller/mobiveil/pcie-mobiveil.h
index e63abb887ee3..662f17f9bf65 100644
--- a/drivers/pci/controller/mobiveil/pcie-mobiveil.h
+++ b/drivers/pci/controller/mobiveil/pcie-mobiveil.h
@@ -160,7 +160,7 @@ struct mobiveil_root_port {
 };
 
 struct mobiveil_pab_ops {
-	int (*link_up)(struct mobiveil_pcie *pcie);
+	bool (*link_up)(struct mobiveil_pcie *pcie);
 };
 
 struct mobiveil_pcie {
-- 
2.25.1