diff mbox series

[5.10,107/146] PCI: Mark TI C667X to avoid bus reset

Message ID	20210621154918.077242614@linuxfoundation.org
State	New
Headers	show Return-Path: <stable-owner@kernel.org> From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, stable@vger.kernel.org, =?utf-8?q?Antti_J=C3=A4rvinen?= <antti.jarvinen@gmail.com>, Bjorn Helgaas <bhelgaas@google.com>, Kishon Vijay Abraham I <kishon@ti.com> Subject: [PATCH 5.10 107/146] PCI: Mark TI C667X to avoid bus reset Date: Mon, 21 Jun 2021 18:15:37 +0200 Message-Id: <20210621154918.077242614@linuxfoundation.org> In-Reply-To: <20210621154911.244649123@linuxfoundation.org> References: <20210621154911.244649123@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	None \| expand [5.10,002/146] dmaengine: fsl-dpaa2-qdma: Fix error return code in two functions [5.10,004/146] dmaengine: ALTERA_MSGDMA depends on HAS_IOMEM [5.10,006/146] dmaengine: SF_PDMA depends on HAS_IOMEM [5.10,007/146] dmaengine: stedma40: add missing iounmap() on error in d40_probe() [5.10,008/146] afs: Fix an IS_ERR() vs NULL check [5.10,010/146] kvm: LAPIC: Restore guard to prevent illegal APIC register access [5.10,011/146] fanotify: fix copy_event_to_user() fid error clean up [5.10,013/146] mac80211: fix skb length check in ieee80211_scan_rx() [5.10,015/146] mlxsw: core: Set thermal zone polling delay argument to real value at init [5.10,017/146] net: ipv4: fix memory leak in netlbl_cipsov4_add_std [5.10,020/146] net: dsa: felix: re-enable TX flow control in ocelot_port_flush() [5.10,022/146] netfilter: nft_fib_ipv6: skip ipv6 packets from any to link-local [5.10,024/146] ice: parameterize functions responsible for Tx ring management [5.10,026/146] rtnetlink: Fix regression in bridge VLAN configuration [5.10,028/146] net/mlx5e: Remove dependency in IPsec initialization flows [5.10,031/146] net/mlx5: DR, Allow SW steering for sw_owner_v2 devices [5.10,033/146] net/mlx5e: Block offload of outer header csum for UDP tunnels [5.10,034/146] netfilter: synproxy: Fix out of bounds when parsing TCP options [5.10,037/146] mptcp: try harder to borrow memory from subflow under pressure [5.10,039/146] selftests: mptcp: enable syncookie only in absence of reorders [5.10,042/146] cxgb4: fix sleep in atomic when flashing PHY firmware [5.10,044/146] net: stmmac: dwmac1000: Fix extended MAC address registers definition [5.10,046/146] net: qualcomm: rmnet: Update rmnet device MTU based on real device [5.10,047/146] net: qualcomm: rmnet: dont over-count statistics [5.10,048/146] ethtool: strset: fix message length calculation [5.10,051/146] cxgb4: fix wrong ethtool n-tuple rule lookup [5.10,052/146] ipv4: Fix device used for dst_alloc with local routes [5.10,055/146] ptp: improve max_adj check against unreasonable values [5.10,056/146] net: cdc_ncm: switch to eth%d interface naming [5.10,059/146] net: fec_ptp: fix issue caused by refactor the fec_devtype [5.10,060/146] net: ipv4: fix memory leak in ip_mc_add1_src [5.10,062/146] net/mlx5: E-Switch, Read PF mac address [5.10,064/146] net/mlx5: Reset mkey index on creation [5.10,067/146] net: cdc_eem: fix tx fixup skb leak [5.10,068/146] cxgb4: fix wrong shift. [5.10,069/146] bnxt_en: Rediscover PHY capabilities after firmware reset [5.10,072/146] icmp: dont send out ICMP messages with a source address of 0.0.0.0 [5.10,074/146] regulator: cros-ec: Fix error code in dev_err message [5.10,076/146] regulator: bd70528: Fix off-by-one for buck123 .n_voltages setting [5.10,078/146] ASoC: rt5659: Fix the lost powers for the HDA header [5.10,079/146] phy: phy-mtk-tphy: Fix some resource leaks in mtk_phy_init() [5.10,080/146] ASoC: fsl-asoc-card: Set .owner attribute when registering card. [5.10,082/146] spi: spi-zynq-qspi: Fix some wrong goto jumps & missing error code [5.10,083/146] sched/pelt: Ensure that _sum is always synced with _avg [5.10,084/146] ASoC: tas2562: Fix TDM_CFG0_SAMPRATE values [5.10,086/146] regulator: rt4801: Fix NULL pointer dereference if priv->enable_gpios is NULL [5.10,087/146] ASoC: rt5682: Fix the fast discharge for headset unplugging in soundwire mode [5.10,089/146] drm/sun4i: dw-hdmi: Make HDMI PHY into a platform device [5.10,092/146] hwmon: (scpi-hwmon) shows the negative temperature properly [5.10,094/146] irqchip/gic-v3: Workaround inconsistent PMR setting on NMI entry [5.10,096/146] bpf: Inherit expanded/patched seen count from old aux data [5.10,098/146] can: bcm: fix infoleak in struct bcm_msg_head [5.10,099/146] can: bcm/raw/isotp: use per module netdevice notifier [5.10,101/146] can: mcba_usb: fix memory leak in mcba_usb [5.10,103/146] usb: chipidea: imx: Fix Battery Charger 1.2 CDP detection [5.10,105/146] tracing: Do not stop recording comms if the trace file is being read [5.10,107/146] PCI: Mark TI C667X to avoid bus reset [5.10,110/146] PCI: Add ACS quirk for Broadcom BCM57414 NIC [5.10,112/146] KVM: x86: Immediately reset the MMU context when the SMM flag is cleared [5.10,114/146] KVM: X86: Fix x86_emulator slab cache leak [5.10,118/146] x86/mm: Avoid truncating memblocks for SGX memory [5.10,119/146] x86/process: Check PF_KTHREAD and not current->mm for kernel threads [5.10,120/146] x86/ioremap: Map EFI-reserved memory as encrypted for SEV [5.10,121/146] x86/pkru: Write hardware init value to PKRU when xstate is init [5.10,124/146] x86/fpu: Reset state for all signal restore failures [5.10,125/146] crash_core, vmcoreinfo: append SECTION_SIZE_BITS to vmcoreinfo [5.10,128/146] cfg80211: make certificate generation more robust [5.10,129/146] cfg80211: avoid double free of PMSR request [5.10,130/146] drm/amdgpu/gfx10: enlarge CP_MEC_DOORBELL_RANGE_UPPER to cover full doorbell. [5.10,134/146] net: bridge: fix vlan tunnel dst null pointer dereference [5.10,135/146] net: bridge: fix vlan tunnel dst refcnt when egressing [5.10,137/146] mm/slub: clarify verification reporting [5.10,138/146] mm/slub: fix redzoning for small allocations [5.10,143/146] tools headers UAPI: Sync linux/in.h copy with the kernel sources [5.10,144/146] perf beauty: Update copy of linux/socket.h with the kernel sources

Commit Message

Greg KH June 21, 2021, 4:15 p.m. UTC

From: Antti Järvinen <antti.jarvinen@gmail.com>

commit b5cf198e74a91073d12839a3e2db99994a39995d upstream.

Some TI KeyStone C667X devices do not support bus/hot reset.  The PCIESS
automatically disables LTSSM when Secondary Bus Reset is received and
device stops working.  Prevent bus reset for these devices.  With this
change, the device can be assigned to VMs with VFIO, but it will leak state
between VMs.

Reference: https://e2e.ti.com/support/processors/f/791/t/954382
Link: https://lore.kernel.org/r/20210315102606.17153-1-antti.jarvinen@gmail.com
Signed-off-by: Antti Järvinen <antti.jarvinen@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kishon Vijay Abraham I <kishon@ti.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/pci/quirks.c |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff mbox series

Patch

--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -3577,6 +3577,16 @@  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_A
  */
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CAVIUM, 0xa100, quirk_no_bus_reset);
 
+/*
+ * Some TI KeyStone C667X devices do not support bus/hot reset.  The PCIESS
+ * automatically disables LTSSM when Secondary Bus Reset is received and
+ * the device stops working.  Prevent bus reset for these devices.  With
+ * this change, the device can be assigned to VMs with VFIO, but it will
+ * leak state between VMs.  Reference
+ * https://e2e.ti.com/support/processors/f/791/t/954382
+ */
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, 0xb005, quirk_no_bus_reset);
+
 static void quirk_no_pm_reset(struct pci_dev *dev)
 {
 	/*