diff mbox series

[v10,1/7] PCI: brcmstb: Fix function return value handling

Message ID 20211209211407.8102-2-jim2101024@gmail.com (mailing list archive)
State Superseded
Delegated to: Lorenzo Pieralisi
Headers show
Series PCI: brcmstb: root port turns on sub-device power | expand

Commit Message

Jim Quinlan Dec. 9, 2021, 9:13 p.m. UTC 
Do at least a dev_err() on some calls to reset_control_rearm() and
brcm_phy_stop().  In some cases it may not make sense to return this error
value "above" as doing so will cause more trouble than is warranted.

Signed-off-by: Jim Quinlan <jim2101024@gmail.com>
---
 drivers/pci/controller/pcie-brcmstb.c | 28 +++++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)

Comments

Florian Fainelli Dec. 9, 2021, 9:34 p.m. UTC | #1 
On 12/9/21 1:13 PM, Jim Quinlan wrote:
> Do at least a dev_err() on some calls to reset_control_rearm() and
> brcm_phy_stop().  In some cases it may not make sense to return this error
> value "above" as doing so will cause more trouble than is warranted.
> 
> Signed-off-by: Jim Quinlan <jim2101024@gmail.com>

Acked-by: Florian Fainelli <f.fainelli@gmail.com>
diff mbox series

Patch

diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
index 1fc7bd49a7ad..9ed79ddb6a83 100644
--- a/drivers/pci/controller/pcie-brcmstb.c
+++ b/drivers/pci/controller/pcie-brcmstb.c
@@ -1146,11 +1146,23 @@  static int brcm_pcie_suspend(struct device *dev)
 	int ret;
 
 	brcm_pcie_turn_off(pcie);
-	ret = brcm_phy_stop(pcie);
-	reset_control_rearm(pcie->rescal);
+	/*
+	 * If brcm_phy_stop() returns an error, just dev_err(). If we
+	 * return the error it will cause the suspend to fail and this is a
+	 * forgivable offense that will probably be erased on resume.
+	 */
+	if (brcm_phy_stop(pcie))
+		dev_err(dev, "Could not stop phy for suspend\n");
+
+	ret = reset_control_rearm(pcie->rescal);
+	if (ret) {
+		dev_err(dev, "Could not rearm rescal reset\n");
+		return ret;
+	}
+
 	clk_disable_unprepare(pcie->clk);
 
-	return ret;
+	return 0;
 }
 
 static int brcm_pcie_resume(struct device *dev)
@@ -1161,7 +1173,9 @@  static int brcm_pcie_resume(struct device *dev)
 	int ret;
 
 	base = pcie->base;
-	clk_prepare_enable(pcie->clk);
+	ret = clk_prepare_enable(pcie->clk);
+	if (ret)
+		return ret;
 
 	ret = reset_control_reset(pcie->rescal);
 	if (ret)
@@ -1202,8 +1216,10 @@  static void __brcm_pcie_remove(struct brcm_pcie *pcie)
 {
 	brcm_msi_remove(pcie);
 	brcm_pcie_turn_off(pcie);
-	brcm_phy_stop(pcie);
-	reset_control_rearm(pcie->rescal);
+	if (brcm_phy_stop(pcie))
+		dev_err(pcie->dev, "Could not stop phy\n");
+	if (reset_control_rearm(pcie->rescal))
+		dev_err(pcie->dev, "Could not rearm rescal reset\n");
 	clk_disable_unprepare(pcie->clk);
 }