The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x f81dfa3b57c624c56f2bff171c431bc7f5b558f2 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2024100130-footbath-camper-be92@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^..
Possible dependencies:
f81dfa3b57c6 ("xhci: Set quirky xHC PCI hosts to D3 _after_ stopping and freeing them.") 884c27440829 ("usb: renesas-xhci: Remove renesas_xhci_pci_exit()") 78ef1b1ea193 ("usb: xhci: make symbols static") a66d21d7dba8 ("usb: xhci: Add support for Renesas controller with memory") 8bd5741e3145 ("usb: renesas-xhci: Add the renesas xhci driver") ff4c65ca48f0 ("usb: hci: add hc_driver as argument for usb_hcd_pci_probe")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From f81dfa3b57c624c56f2bff171c431bc7f5b558f2 Mon Sep 17 00:00:00 2001 From: Mathias Nyman mathias.nyman@linux.intel.com Date: Thu, 5 Sep 2024 17:32:59 +0300 Subject: [PATCH] xhci: Set quirky xHC PCI hosts to D3 _after_ stopping and freeing them.
PCI xHC host should be stopped and xhci driver memory freed before putting host to PCI D3 state during PCI remove callback.
Hosts with XHCI_SPURIOUS_WAKEUP quirk did this the wrong way around and set the host to D3 before calling usb_hcd_pci_remove(dev), which will access the host to stop it, and then free xhci.
Fixes: f1f6d9a8b540 ("xhci: don't dereference a xhci member after removing xhci") Cc: stable@vger.kernel.org Signed-off-by: Mathias Nyman mathias.nyman@linux.intel.com Link: https://lore.kernel.org/r/20240905143300.1959279-12-mathias.nyman@linux.inte... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 526739af2070..de50f5ba60df 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -657,8 +657,10 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) void xhci_pci_remove(struct pci_dev *dev) { struct xhci_hcd *xhci; + bool set_power_d3;
xhci = hcd_to_xhci(pci_get_drvdata(dev)); + set_power_d3 = xhci->quirks & XHCI_SPURIOUS_WAKEUP;
xhci->xhc_state |= XHCI_STATE_REMOVING;
@@ -671,11 +673,11 @@ void xhci_pci_remove(struct pci_dev *dev) xhci->shared_hcd = NULL; }
- /* Workaround for spurious wakeups at shutdown with HSW */ - if (xhci->quirks & XHCI_SPURIOUS_WAKEUP) - pci_set_power_state(dev, PCI_D3hot); - usb_hcd_pci_remove(dev); + + /* Workaround for spurious wakeups at shutdown with HSW */ + if (set_power_d3) + pci_set_power_state(dev, PCI_D3hot); } EXPORT_SYMBOL_NS_GPL(xhci_pci_remove, xhci);