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FAILED: patch "[PATCH] parisc: Check region is readable by user in" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-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(a)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-5.15.y git checkout FETCH_HEAD git cherry-pick -x 91428ca9320edbab1211851d82429d33b9cd73ef # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082140-disburse-turf-1dcd@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 91428ca9320edbab1211851d82429d33b9cd73ef Mon Sep 17 00:00:00 2001 From: John David Anglin <dave.anglin(a)bell.net> Date: Mon, 21 Jul 2025 15:39:26 -0400 Subject: [PATCH] parisc: Check region is readable by user in raw_copy_from_user() Because of the way the _PAGE_READ is handled in the parisc PTE, an access interruption is not generated when the kernel reads from a region where the _PAGE_READ is zero. The current code was written assuming read access faults would also occur in the kernel. This change adds user access checks to raw_copy_from_user(). The prober_user() define checks whether user code has read access to a virtual address. Note that page faults are not handled in the exception support for the probe instruction. For this reason, we precede the probe by a ldb access check. Signed-off-by: John David Anglin <dave.anglin(a)bell.net> Signed-off-by: Helge Deller <deller(a)gmx.de> Cc: stable(a)vger.kernel.org # v5.12+ diff --git a/arch/parisc/include/asm/special_insns.h b/arch/parisc/include/asm/special_insns.h index 51f40eaf7780..1013eeba31e5 100644 --- a/arch/parisc/include/asm/special_insns.h +++ b/arch/parisc/include/asm/special_insns.h @@ -32,6 +32,34 @@ pa; \ }) +/** + * prober_user() - Probe user read access + * @sr: Space regster. + * @va: Virtual address. + * + * Return: Non-zero if address is accessible. + * + * Due to the way _PAGE_READ is handled in TLB entries, we need + * a special check to determine whether a user address is accessible. + * The ldb instruction does the initial access check. If it is + * successful, the probe instruction checks user access rights. + */ +#define prober_user(sr, va) ({ \ + unsigned long read_allowed; \ + __asm__ __volatile__( \ + "copy %%r0,%0\n" \ + "8:\tldb 0(%%sr%1,%2),%%r0\n" \ + "\tproberi (%%sr%1,%2),%3,%0\n" \ + "9:\n" \ + ASM_EXCEPTIONTABLE_ENTRY(8b, 9b, \ + "or %%r0,%%r0,%%r0") \ + : "=&r" (read_allowed) \ + : "i" (sr), "r" (va), "i" (PRIV_USER) \ + : "memory" \ + ); \ + read_allowed; \ +}) + #define CR_EIEM 15 /* External Interrupt Enable Mask */ #define CR_CR16 16 /* CR16 Interval Timer */ #define CR_EIRR 23 /* External Interrupt Request Register */ diff --git a/arch/parisc/lib/memcpy.c b/arch/parisc/lib/memcpy.c index 5fc0c852c84c..69d65ffab312 100644 --- a/arch/parisc/lib/memcpy.c +++ b/arch/parisc/lib/memcpy.c @@ -12,6 +12,7 @@ #include <linux/module.h> #include <linux/compiler.h> #include <linux/uaccess.h> +#include <linux/mm.h> #define get_user_space() mfsp(SR_USER) #define get_kernel_space() SR_KERNEL @@ -32,9 +33,25 @@ EXPORT_SYMBOL(raw_copy_to_user); unsigned long raw_copy_from_user(void *dst, const void __user *src, unsigned long len) { + unsigned long start = (unsigned long) src; + unsigned long end = start + len; + unsigned long newlen = len; + mtsp(get_user_space(), SR_TEMP1); mtsp(get_kernel_space(), SR_TEMP2); - return pa_memcpy(dst, (void __force *)src, len); + + /* Check region is user accessible */ + if (start) + while (start < end) { + if (!prober_user(SR_TEMP1, start)) { + newlen = (start - (unsigned long) src); + break; + } + start += PAGE_SIZE; + /* align to page boundry which may have different permission */ + start = PAGE_ALIGN_DOWN(start); + } + return len - newlen + pa_memcpy(dst, (void __force *)src, newlen); } EXPORT_SYMBOL(raw_copy_from_user);

3 weeks, 5 days

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FAILED: patch "[PATCH] PCI: imx6: Add IMX8MQ_EP third 64-bit BAR in epc_features" failed to apply to 6.6-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-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(a)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-6.6.y git checkout FETCH_HEAD git cherry-pick -x c523fa63ac1d452abeeb4e699560ec3365037f32 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082141-nape-sinless-0ceb@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From c523fa63ac1d452abeeb4e699560ec3365037f32 Mon Sep 17 00:00:00 2001 From: Richard Zhu <hongxing.zhu(a)nxp.com> Date: Tue, 8 Jul 2025 17:10:02 +0800 Subject: [PATCH] PCI: imx6: Add IMX8MQ_EP third 64-bit BAR in epc_features IMX8MQ_EP has three 64-bit BAR0/2/4 capable and programmable BARs. For IMX8MQ_EP, use imx8q_pcie_epc_features (64-bit BARs 0, 2, 4) instead of imx8m_pcie_epc_features (64-bit BARs 0, 2). Fixes: 75c2f26da03f ("PCI: imx6: Add i.MX PCIe EP mode support") Signed-off-by: Richard Zhu <hongxing.zhu(a)nxp.com> [bhelgaas: add details in subject] Signed-off-by: Bjorn Helgaas <bhelgaas(a)google.com> Reviewed-by: Frank Li <Frank.Li(a)nxp.com> Cc: stable(a)vger.kernel.org Link: https://patch.msgid.link/20250708091003.2582846-2-hongxing.zhu@nxp.com diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 5a38cfaf989b..7d15bcb7c107 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -1912,7 +1912,7 @@ static const struct imx_pcie_drvdata drvdata[] = { .mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE, .mode_off[1] = IOMUXC_GPR12, .mode_mask[1] = IMX8MQ_GPR12_PCIE2_CTRL_DEVICE_TYPE, - .epc_features = &imx8m_pcie_epc_features, + .epc_features = &imx8q_pcie_epc_features, .init_phy = imx8mq_pcie_init_phy, .enable_ref_clk = imx8mm_pcie_enable_ref_clk, },

3 weeks, 5 days

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FAILED: patch "[PATCH] PCI: rockchip: Set Target Link Speed to 5.0 GT/s before" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

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(a)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 114b06ee108cabc82b995fbac6672230a9776936 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082129-blimp-sludge-9fd3@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 114b06ee108cabc82b995fbac6672230a9776936 Mon Sep 17 00:00:00 2001 From: Geraldo Nascimento <geraldogabriel(a)gmail.com> Date: Mon, 30 Jun 2025 19:24:57 -0300 Subject: [PATCH] PCI: rockchip: Set Target Link Speed to 5.0 GT/s before retraining Rockchip controllers can support up to 5.0 GT/s link speed. But the driver doesn't set the Target Link Speed currently. This may cause failure in retraining the link to 5.0 GT/s if supported by the endpoint. So set the Target Link Speed to 5.0 GT/s in the Link Control and Status Register 2. Fixes: e77f847df54c ("PCI: rockchip: Add Rockchip PCIe controller support") Signed-off-by: Geraldo Nascimento <geraldogabriel(a)gmail.com> [mani: fixed whitespace warning, commit message rewording, added fixes tag] Signed-off-by: Manivannan Sadhasivam <mani(a)kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas(a)google.com> Tested-by: Robin Murphy <robin.murphy(a)arm.com> Cc: stable(a)vger.kernel.org Link: https://patch.msgid.link/0afa6bc47b7f50e2e81b0b47d51c66feb0fb565f.175132201… diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c index 383d20f98cc3..fb9ae3f158a8 100644 --- a/drivers/pci/controller/pcie-rockchip-host.c +++ b/drivers/pci/controller/pcie-rockchip-host.c @@ -342,6 +342,10 @@ static int rockchip_pcie_host_init_port(struct rockchip_pcie *rockchip) * Enable retrain for gen2. This should be configured only after * gen1 finished. */ + status = rockchip_pcie_read(rockchip, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL2); + status &= ~PCI_EXP_LNKCTL2_TLS; + status |= PCI_EXP_LNKCTL2_TLS_5_0GT; + rockchip_pcie_write(rockchip, status, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL2); status = rockchip_pcie_read(rockchip, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL); status |= PCI_EXP_LNKCTL_RL; rockchip_pcie_write(rockchip, status, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL);

3 weeks, 5 days

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FAILED: patch "[PATCH] PCI: rockchip: Set Target Link Speed to 5.0 GT/s before" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-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(a)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-5.10.y git checkout FETCH_HEAD git cherry-pick -x 114b06ee108cabc82b995fbac6672230a9776936 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082128-ripping-poster-1b52@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 114b06ee108cabc82b995fbac6672230a9776936 Mon Sep 17 00:00:00 2001 From: Geraldo Nascimento <geraldogabriel(a)gmail.com> Date: Mon, 30 Jun 2025 19:24:57 -0300 Subject: [PATCH] PCI: rockchip: Set Target Link Speed to 5.0 GT/s before retraining Rockchip controllers can support up to 5.0 GT/s link speed. But the driver doesn't set the Target Link Speed currently. This may cause failure in retraining the link to 5.0 GT/s if supported by the endpoint. So set the Target Link Speed to 5.0 GT/s in the Link Control and Status Register 2. Fixes: e77f847df54c ("PCI: rockchip: Add Rockchip PCIe controller support") Signed-off-by: Geraldo Nascimento <geraldogabriel(a)gmail.com> [mani: fixed whitespace warning, commit message rewording, added fixes tag] Signed-off-by: Manivannan Sadhasivam <mani(a)kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas(a)google.com> Tested-by: Robin Murphy <robin.murphy(a)arm.com> Cc: stable(a)vger.kernel.org Link: https://patch.msgid.link/0afa6bc47b7f50e2e81b0b47d51c66feb0fb565f.175132201… diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c index 383d20f98cc3..fb9ae3f158a8 100644 --- a/drivers/pci/controller/pcie-rockchip-host.c +++ b/drivers/pci/controller/pcie-rockchip-host.c @@ -342,6 +342,10 @@ static int rockchip_pcie_host_init_port(struct rockchip_pcie *rockchip) * Enable retrain for gen2. This should be configured only after * gen1 finished. */ + status = rockchip_pcie_read(rockchip, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL2); + status &= ~PCI_EXP_LNKCTL2_TLS; + status |= PCI_EXP_LNKCTL2_TLS_5_0GT; + rockchip_pcie_write(rockchip, status, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL2); status = rockchip_pcie_read(rockchip, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL); status |= PCI_EXP_LNKCTL_RL; rockchip_pcie_write(rockchip, status, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL);

3 weeks, 5 days

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FAILED: patch "[PATCH] PCI: rockchip: Set Target Link Speed to 5.0 GT/s before" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-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(a)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-5.15.y git checkout FETCH_HEAD git cherry-pick -x 114b06ee108cabc82b995fbac6672230a9776936 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082128-affix-false-013c@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 114b06ee108cabc82b995fbac6672230a9776936 Mon Sep 17 00:00:00 2001 From: Geraldo Nascimento <geraldogabriel(a)gmail.com> Date: Mon, 30 Jun 2025 19:24:57 -0300 Subject: [PATCH] PCI: rockchip: Set Target Link Speed to 5.0 GT/s before retraining Rockchip controllers can support up to 5.0 GT/s link speed. But the driver doesn't set the Target Link Speed currently. This may cause failure in retraining the link to 5.0 GT/s if supported by the endpoint. So set the Target Link Speed to 5.0 GT/s in the Link Control and Status Register 2. Fixes: e77f847df54c ("PCI: rockchip: Add Rockchip PCIe controller support") Signed-off-by: Geraldo Nascimento <geraldogabriel(a)gmail.com> [mani: fixed whitespace warning, commit message rewording, added fixes tag] Signed-off-by: Manivannan Sadhasivam <mani(a)kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas(a)google.com> Tested-by: Robin Murphy <robin.murphy(a)arm.com> Cc: stable(a)vger.kernel.org Link: https://patch.msgid.link/0afa6bc47b7f50e2e81b0b47d51c66feb0fb565f.175132201… diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c index 383d20f98cc3..fb9ae3f158a8 100644 --- a/drivers/pci/controller/pcie-rockchip-host.c +++ b/drivers/pci/controller/pcie-rockchip-host.c @@ -342,6 +342,10 @@ static int rockchip_pcie_host_init_port(struct rockchip_pcie *rockchip) * Enable retrain for gen2. This should be configured only after * gen1 finished. */ + status = rockchip_pcie_read(rockchip, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL2); + status &= ~PCI_EXP_LNKCTL2_TLS; + status |= PCI_EXP_LNKCTL2_TLS_5_0GT; + rockchip_pcie_write(rockchip, status, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL2); status = rockchip_pcie_read(rockchip, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL); status |= PCI_EXP_LNKCTL_RL; rockchip_pcie_write(rockchip, status, PCIE_RC_CONFIG_CR + PCI_EXP_LNKCTL);

3 weeks, 5 days

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FAILED: patch "[PATCH] platform/chrome: cros_ec: Unregister notifier in" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-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(a)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-6.1.y git checkout FETCH_HEAD git cherry-pick -x e2374953461947eee49f69b3e3204ff080ef31b1 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082112-exemplary-explode-1646@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From e2374953461947eee49f69b3e3204ff080ef31b1 Mon Sep 17 00:00:00 2001 From: Tzung-Bi Shih <tzungbi(a)kernel.org> Date: Tue, 22 Jul 2025 12:05:13 +0000 Subject: [PATCH] platform/chrome: cros_ec: Unregister notifier in cros_ec_unregister() The blocking notifier is registered in cros_ec_register(); however, it isn't unregistered in cros_ec_unregister(). Fix it. Fixes: 42cd0ab476e2 ("platform/chrome: cros_ec: Query EC protocol version if EC transitions between RO/RW") Cc: stable(a)vger.kernel.org Reviewed-by: Benson Leung <bleung(a)chromium.org> Link: https://lore.kernel.org/r/20250722120513.234031-1-tzungbi@kernel.org Signed-off-by: Tzung-Bi Shih <tzungbi(a)kernel.org> diff --git a/drivers/platform/chrome/cros_ec.c b/drivers/platform/chrome/cros_ec.c index 110771a8645e..fd58781a2fb7 100644 --- a/drivers/platform/chrome/cros_ec.c +++ b/drivers/platform/chrome/cros_ec.c @@ -318,6 +318,9 @@ EXPORT_SYMBOL(cros_ec_register); */ void cros_ec_unregister(struct cros_ec_device *ec_dev) { + if (ec_dev->mkbp_event_supported) + blocking_notifier_chain_unregister(&ec_dev->event_notifier, + &ec_dev->notifier_ready); platform_device_unregister(ec_dev->pd); platform_device_unregister(ec_dev->ec); mutex_destroy(&ec_dev->lock);

3 weeks, 5 days

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FAILED: patch "[PATCH] PCI/portdrv: Use is_pciehp instead of is_hotplug_bridge" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

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(a)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 1d60796a62f327cd9e0a6a0865ded7656d2c67f9 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082102-dandelion-elsewhere-51cc@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 1d60796a62f327cd9e0a6a0865ded7656d2c67f9 Mon Sep 17 00:00:00 2001 From: Lukas Wunner <lukas(a)wunner.de> Date: Sun, 13 Jul 2025 16:31:02 +0200 Subject: [PATCH] PCI/portdrv: Use is_pciehp instead of is_hotplug_bridge The PCIe port driver erroneously creates a subdevice for hotplug on ACPI slots which are handled by the ACPI hotplug driver. Avoid by checking the is_pciehp flag instead of is_hotplug_bridge when deciding whether to create a subdevice. The latter encompasses ACPI slots whereas the former doesn't. The superfluous subdevice has no real negative impact, it occupies memory and interrupt resources but otherwise just sits there waiting for interrupts from the slot that are never signaled. Fixes: f8415222837b ("PCI: Use cached copy of PCI_EXP_SLTCAP_HPC bit") Signed-off-by: Lukas Wunner <lukas(a)wunner.de> Signed-off-by: Bjorn Helgaas <bhelgaas(a)google.com> Cc: stable(a)vger.kernel.org # v4.7+ Link: https://patch.msgid.link/40d5a5fe8d40595d505949c620a067fa110ee85e.175239010… diff --git a/drivers/pci/pcie/portdrv.c b/drivers/pci/pcie/portdrv.c index e8318fd5f6ed..d1b68c18444f 100644 --- a/drivers/pci/pcie/portdrv.c +++ b/drivers/pci/pcie/portdrv.c @@ -220,7 +220,7 @@ static int get_port_device_capability(struct pci_dev *dev) struct pci_host_bridge *host = pci_find_host_bridge(dev->bus); int services = 0; - if (dev->is_hotplug_bridge && + if (dev->is_pciehp && (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT || pci_pcie_type(dev) == PCI_EXP_TYPE_DOWNSTREAM) && (pcie_ports_native || host->native_pcie_hotplug)) {

3 weeks, 5 days

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FAILED: patch "[PATCH] PCI/portdrv: Use is_pciehp instead of is_hotplug_bridge" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-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(a)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-5.10.y git checkout FETCH_HEAD git cherry-pick -x 1d60796a62f327cd9e0a6a0865ded7656d2c67f9 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082101-cycle-deport-76fa@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 1d60796a62f327cd9e0a6a0865ded7656d2c67f9 Mon Sep 17 00:00:00 2001 From: Lukas Wunner <lukas(a)wunner.de> Date: Sun, 13 Jul 2025 16:31:02 +0200 Subject: [PATCH] PCI/portdrv: Use is_pciehp instead of is_hotplug_bridge The PCIe port driver erroneously creates a subdevice for hotplug on ACPI slots which are handled by the ACPI hotplug driver. Avoid by checking the is_pciehp flag instead of is_hotplug_bridge when deciding whether to create a subdevice. The latter encompasses ACPI slots whereas the former doesn't. The superfluous subdevice has no real negative impact, it occupies memory and interrupt resources but otherwise just sits there waiting for interrupts from the slot that are never signaled. Fixes: f8415222837b ("PCI: Use cached copy of PCI_EXP_SLTCAP_HPC bit") Signed-off-by: Lukas Wunner <lukas(a)wunner.de> Signed-off-by: Bjorn Helgaas <bhelgaas(a)google.com> Cc: stable(a)vger.kernel.org # v4.7+ Link: https://patch.msgid.link/40d5a5fe8d40595d505949c620a067fa110ee85e.175239010… diff --git a/drivers/pci/pcie/portdrv.c b/drivers/pci/pcie/portdrv.c index e8318fd5f6ed..d1b68c18444f 100644 --- a/drivers/pci/pcie/portdrv.c +++ b/drivers/pci/pcie/portdrv.c @@ -220,7 +220,7 @@ static int get_port_device_capability(struct pci_dev *dev) struct pci_host_bridge *host = pci_find_host_bridge(dev->bus); int services = 0; - if (dev->is_hotplug_bridge && + if (dev->is_pciehp && (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT || pci_pcie_type(dev) == PCI_EXP_TYPE_DOWNSTREAM) && (pcie_ports_native || host->native_pcie_hotplug)) {

3 weeks, 5 days

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FAILED: patch "[PATCH] PCI/portdrv: Use is_pciehp instead of is_hotplug_bridge" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-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(a)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-5.15.y git checkout FETCH_HEAD git cherry-pick -x 1d60796a62f327cd9e0a6a0865ded7656d2c67f9 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082101-catsup-superman-c4f4@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 1d60796a62f327cd9e0a6a0865ded7656d2c67f9 Mon Sep 17 00:00:00 2001 From: Lukas Wunner <lukas(a)wunner.de> Date: Sun, 13 Jul 2025 16:31:02 +0200 Subject: [PATCH] PCI/portdrv: Use is_pciehp instead of is_hotplug_bridge The PCIe port driver erroneously creates a subdevice for hotplug on ACPI slots which are handled by the ACPI hotplug driver. Avoid by checking the is_pciehp flag instead of is_hotplug_bridge when deciding whether to create a subdevice. The latter encompasses ACPI slots whereas the former doesn't. The superfluous subdevice has no real negative impact, it occupies memory and interrupt resources but otherwise just sits there waiting for interrupts from the slot that are never signaled. Fixes: f8415222837b ("PCI: Use cached copy of PCI_EXP_SLTCAP_HPC bit") Signed-off-by: Lukas Wunner <lukas(a)wunner.de> Signed-off-by: Bjorn Helgaas <bhelgaas(a)google.com> Cc: stable(a)vger.kernel.org # v4.7+ Link: https://patch.msgid.link/40d5a5fe8d40595d505949c620a067fa110ee85e.175239010… diff --git a/drivers/pci/pcie/portdrv.c b/drivers/pci/pcie/portdrv.c index e8318fd5f6ed..d1b68c18444f 100644 --- a/drivers/pci/pcie/portdrv.c +++ b/drivers/pci/pcie/portdrv.c @@ -220,7 +220,7 @@ static int get_port_device_capability(struct pci_dev *dev) struct pci_host_bridge *host = pci_find_host_bridge(dev->bus); int services = 0; - if (dev->is_hotplug_bridge && + if (dev->is_pciehp && (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT || pci_pcie_type(dev) == PCI_EXP_TYPE_DOWNSTREAM) && (pcie_ports_native || host->native_pcie_hotplug)) {

3 weeks, 5 days

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FAILED: patch "[PATCH] PCI/portdrv: Use is_pciehp instead of is_hotplug_bridge" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-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(a)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-6.1.y git checkout FETCH_HEAD git cherry-pick -x 1d60796a62f327cd9e0a6a0865ded7656d2c67f9 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025082100-neglector-avenge-a128@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 1d60796a62f327cd9e0a6a0865ded7656d2c67f9 Mon Sep 17 00:00:00 2001 From: Lukas Wunner <lukas(a)wunner.de> Date: Sun, 13 Jul 2025 16:31:02 +0200 Subject: [PATCH] PCI/portdrv: Use is_pciehp instead of is_hotplug_bridge The PCIe port driver erroneously creates a subdevice for hotplug on ACPI slots which are handled by the ACPI hotplug driver. Avoid by checking the is_pciehp flag instead of is_hotplug_bridge when deciding whether to create a subdevice. The latter encompasses ACPI slots whereas the former doesn't. The superfluous subdevice has no real negative impact, it occupies memory and interrupt resources but otherwise just sits there waiting for interrupts from the slot that are never signaled. Fixes: f8415222837b ("PCI: Use cached copy of PCI_EXP_SLTCAP_HPC bit") Signed-off-by: Lukas Wunner <lukas(a)wunner.de> Signed-off-by: Bjorn Helgaas <bhelgaas(a)google.com> Cc: stable(a)vger.kernel.org # v4.7+ Link: https://patch.msgid.link/40d5a5fe8d40595d505949c620a067fa110ee85e.175239010… diff --git a/drivers/pci/pcie/portdrv.c b/drivers/pci/pcie/portdrv.c index e8318fd5f6ed..d1b68c18444f 100644 --- a/drivers/pci/pcie/portdrv.c +++ b/drivers/pci/pcie/portdrv.c @@ -220,7 +220,7 @@ static int get_port_device_capability(struct pci_dev *dev) struct pci_host_bridge *host = pci_find_host_bridge(dev->bus); int services = 0; - if (dev->is_hotplug_bridge && + if (dev->is_pciehp && (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT || pci_pcie_type(dev) == PCI_EXP_TYPE_DOWNSTREAM) && (pcie_ports_native || host->native_pcie_hotplug)) {

3 weeks, 5 days

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