[PATCH 6.1.y] phy: qcom-qmp-combo: fix runtime suspend

[PATCH 6.1.y] phy: qcom-qmp-combo: fix runtime suspend

[Stephen Boyd]

From: Johan Hovold <johan+linaro@kernel.org>

commit c7b98de745cffdceefc077ad5cf9cda032ef8959 upstream.

Drop the confused runtime-suspend type check which effectively broke
runtime PM if the DP child node happens to be parsed before the USB
child node during probe (e.g. due to order of child nodes in the
devicetree).

Instead use the new driver data USB PHY pointer to access the USB
configuration and resources.

Fixes: 52e013d0bffa ("phy: qcom-qmp: Add support for DP in USB3+DP combo phy")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20221114081346.5116-6-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
index adcda7762acf..816829105135 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
@@ -2296,15 +2296,11 @@ static void qmp_combo_disable_autonomous_mode(struct qmp_phy *qphy)
 static int __maybe_unused qmp_combo_runtime_suspend(struct device *dev)
 {
 	struct qcom_qmp *qmp = dev_get_drvdata(dev);
-	struct qmp_phy *qphy = qmp->phys[0];
+	struct qmp_phy *qphy = qmp->usb_phy;
 	const struct qmp_phy_cfg *cfg = qphy->cfg;
 
 	dev_vdbg(dev, "Suspending QMP phy, mode:%d\n", qphy->mode);
 
-	/* Supported only for USB3 PHY and luckily USB3 is the first phy */
-	if (cfg->type != PHY_TYPE_USB3)
-		return 0;
-
 	if (!qmp->init_count) {
 		dev_vdbg(dev, "PHY not initialized, bailing out\n");
 		return 0;
@@ -2321,16 +2317,12 @@ static int __maybe_unused qmp_combo_runtime_suspend(struct device *dev)
 static int __maybe_unused qmp_combo_runtime_resume(struct device *dev)
 {
 	struct qcom_qmp *qmp = dev_get_drvdata(dev);
-	struct qmp_phy *qphy = qmp->phys[0];
+	struct qmp_phy *qphy = qmp->usb_phy;
 	const struct qmp_phy_cfg *cfg = qphy->cfg;
 	int ret = 0;
 
 	dev_vdbg(dev, "Resuming QMP phy, mode:%d\n", qphy->mode);
 
-	/* Supported only for USB3 PHY and luckily USB3 is the first phy */
-	if (cfg->type != PHY_TYPE_USB3)
-		return 0;
-
 	if (!qmp->init_count) {
 		dev_vdbg(dev, "PHY not initialized, bailing out\n");
 		return 0;

base-commit: 68a95455c153f8adc513e5b688f4b348daa7c1b1
-- 
https://chromeos.dev

Re: [PATCH 6.1.y] phy: qcom-qmp-combo: fix runtime suspend

[Greg KH]

On Fri, Feb 03, 2023 at 02:28:20PM -0800, Stephen Boyd wrote:
> From: Johan Hovold <johan+linaro@kernel.org>
> 
> commit c7b98de745cffdceefc077ad5cf9cda032ef8959 upstream.
> 
> Drop the confused runtime-suspend type check which effectively broke
> runtime PM if the DP child node happens to be parsed before the USB
> child node during probe (e.g. due to order of child nodes in the
> devicetree).
> 
> Instead use the new driver data USB PHY pointer to access the USB
> configuration and resources.
> 
> Fixes: 52e013d0bffa ("phy: qcom-qmp: Add support for DP in USB3+DP combo phy")
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> Link: https://lore.kernel.org/r/20221114081346.5116-6-johan+linaro@kernel.org
> Signed-off-by: Vinod Koul <vkoul@kernel.org>
> Signed-off-by: Stephen Boyd <swboyd@chromium.org>
> ---
>  drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 12 ++----------
>  1 file changed, 2 insertions(+), 10 deletions(-)

Now queued up, thanks.

greg k-h