Commit 9e68817f12d5 for kernel

commit 9e68817f12d5935dbf73f2fe6e6299644f6de1b6
Author: Wei Fang <wei.fang@nxp.com>
Date:   Wed May 20 14:44:21 2026 +0800

    net: enetc: avoid VF->PF mailbox timeout during SR-IOV teardown

    During SR-IOV teardown, enetc_msg_psi_free() disables the MR interrupt
    before pci_disable_sriov() removes the VFs. If a VF sends a mailbox
    message during this window, the PF cannot receive it, causing the VF to
    timeout waiting for a reply.

    Since the timeout occurs during SR-IOV teardown when the VF is about to
    be removed anyway, it has no functional impact on operation. However,
    more messages will be added in the future, some visible error logs may
    confuse users. So fix it by calling pci_disable_sriov() first to remove
    all VFs, then safely clean up the mailbox resources. This eliminates the
    race window where VFs could send messages to an unresponsive PF.

    Fixes: beb74ac878c8 ("enetc: Add vf to pf messaging support")
    Signed-off-by: Wei Fang <wei.fang@nxp.com>
    Reviewed-by: Harshitha Ramamurthy <hramamurthy@google.com>
    Link: https://patch.msgid.link/20260520064421.91569-10-wei.fang@nxp.com
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
index 8e11a023d516..3206b3daa1a0 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
@@ -563,9 +563,9 @@ static int enetc_sriov_configure(struct pci_dev *pdev, int num_vfs)
 	int err;

 	if (!num_vfs) {
+		pci_disable_sriov(pdev);
 		enetc_msg_psi_free(pf);
 		pf->num_vfs = 0;
-		pci_disable_sriov(pdev);
 	} else {
 		pf->num_vfs = num_vfs;