devm_regulator_get_optional returns -ENODEV if the regulator isn't
there, so if that's the case we have to make sure not to leave -ENODEV
in the regulator pointer.
Also, make sure we return 0 in that case, but correctly propagate any
other errors. Also propagate the error from _dwc2_hcd_start.
Fixes: 531ef5ebea96 ("usb: dwc2: add support for host mode external vbus supply")
Cc: Amelie Delaunay <amelie.delaunay@xxxxxx>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
---
v2: Only overwrite the error in the pointer after checking it (Heiko
Stübner <heiko@xxxxxxxxx>)
---
arch/arm/configs/multi_v7_defconfig | 3 +++
drivers/usb/dwc2/hcd.c | 11 +++++++----
scripts/setlocalversion | 9 ---------
3 files changed, 10 insertions(+), 13 deletions(-)
diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index 846ce7bb24bc..33148fcabd17 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -1029,3 +1029,6 @@ CONFIG_VIRTIO=y
CONFIG_VIRTIO_PCI=y
CONFIG_VIRTIO_PCI_LEGACY=y
CONFIG_VIRTIO_MMIO=y
+CONFIG_LOCALVERSION_AUTO=n
+CONFIG_LOCALVERSION=""
+
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index dcfda5eb4cac..863aed20517f 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -359,8 +359,13 @@ static void dwc2_gusbcfg_init(struct dwc2_hsotg *hsotg)
static int dwc2_vbus_supply_init(struct dwc2_hsotg *hsotg)
{
hsotg->vbus_supply = devm_regulator_get_optional(hsotg->dev, "vbus");
- if (IS_ERR(hsotg->vbus_supply))
+ if (PTR_ERR(hsotg->vbus_supply) == -ENODEV) {
+ hsotg->vbus_supply = NULL;
return 0;
+ } else if (IS_ERR(hsotg->vbus_supply)) {
+ hsotg->vbus_supply = NULL;
+ return PTR_ERR(hsotg->vbus_supply);
+ }
return regulator_enable(hsotg->vbus_supply);
}
@@ -4342,9 +4347,7 @@ static int _dwc2_hcd_start(struct usb_hcd *hcd)
spin_unlock_irqrestore(&hsotg->lock, flags);
- dwc2_vbus_supply_init(hsotg);
-
- return 0;
+ return dwc2_vbus_supply_init(hsotg);
}
/*
diff --git a/scripts/setlocalversion b/scripts/setlocalversion
index 71f39410691b..cbc36d3b4d0f 100755
--- a/scripts/setlocalversion
+++ b/scripts/setlocalversion
@@ -161,15 +161,6 @@ res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
# full scm version string
res="$res$(scm_version)"
-else
- # append a plus sign if the repository is not in a clean
- # annotated or signed tagged state (as git describe only
- # looks at signed or annotated tags - git tag -a/-s) and
- # LOCALVERSION= is not specified
- if test "${LOCALVERSION+set}" != "set"; then
- scm=$(scm_version --short)
- res="$res${scm:++}"
- fi
fi
echo "$res"
--
2.14.3
--
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