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authorTakashi Iwai <tiwai@suse.de>2025-03-24 17:40:24 +0300
committerTakashi Iwai <tiwai@suse.de>2025-03-24 17:40:24 +0300
commita98a9c11a35c567afe754e2bc28d3a6ad2292928 (patch)
tree8d104f77c988645438f6be8a5e4c859982160b8d /drivers/usb/core/hub.c
parent41a507095040cd6eefca44e28df89303e1c642c9 (diff)
parent9ef52d529bb75071e03cf85078f724d69c4abe89 (diff)
downloadlinux-a98a9c11a35c567afe754e2bc28d3a6ad2292928.tar.xz
Merge tag 'asoc-v6.15' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next
ASoC: Updates for v6.15 This is a very big release due to a combination of some big new work, mainly new drivers and generic SoundWire support, and some wide ranging cleanup work that made small changes to a lot of drivers. - Morimoto-san has completed the conversion to use modern terminology for the clocking configuration, and several other cleanups with narrower impact. - All the power management operation configuration was updated to use current idioms by Takashi Iwai. - Clarification of the control operations from Charles Keepax. - Prepartory work for more generic SoundWire SCDA controls from Charles Keepax. - Support for AMD ACP 7.x, AWINC WM88166, Everest ES8388, Intel AVS PEAKVOL and GAIN DSP modules Mediatek MT8188 DMIC, NXP i.MX95, nVidia Tegra interconnects, Rockchip RK3588 S/PDIF, Texas Instruments SN012776 and TAS5770L, and Wolfson WM8904 DMICs, Some changes from the tip tree adding APIs needed by the AMD code are included, these were unfortunately rebased in the tip tree after being pulled in. There's also some regmap changes supporting the SCDA work and some devres refactoring that was pulled in to support other changes.
Diffstat (limited to 'drivers/usb/core/hub.c')
-rw-r--r--drivers/usb/core/hub.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index a76bb50b6202..dcba4281ea48 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -6066,6 +6066,36 @@ void usb_hub_cleanup(void)
} /* usb_hub_cleanup() */
/**
+ * hub_hc_release_resources - clear resources used by host controller
+ * @udev: pointer to device being released
+ *
+ * Context: task context, might sleep
+ *
+ * Function releases the host controller resources in correct order before
+ * making any operation on resuming usb device. The host controller resources
+ * allocated for devices in tree should be released starting from the last
+ * usb device in tree toward the root hub. This function is used only during
+ * resuming device when usb device require reinitialization – that is, when
+ * flag udev->reset_resume is set.
+ *
+ * This call is synchronous, and may not be used in an interrupt context.
+ */
+static void hub_hc_release_resources(struct usb_device *udev)
+{
+ struct usb_hub *hub = usb_hub_to_struct_hub(udev);
+ struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+ int i;
+
+ /* Release up resources for all children before this device */
+ for (i = 0; i < udev->maxchild; i++)
+ if (hub->ports[i]->child)
+ hub_hc_release_resources(hub->ports[i]->child);
+
+ if (hcd->driver->reset_device)
+ hcd->driver->reset_device(hcd, udev);
+}
+
+/**
* usb_reset_and_verify_device - perform a USB port reset to reinitialize a device
* @udev: device to reset (not in SUSPENDED or NOTATTACHED state)
*
@@ -6129,6 +6159,9 @@ static int usb_reset_and_verify_device(struct usb_device *udev)
bos = udev->bos;
udev->bos = NULL;
+ if (udev->reset_resume)
+ hub_hc_release_resources(udev);
+
mutex_lock(hcd->address0_mutex);
for (i = 0; i < PORT_INIT_TRIES; ++i) {