FAILED: patch "[PATCH] platform/x86: intel: Add notifiers support" failed to apply to 6.12-stable tree
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[email protected]
maintainerThe patch below does not apply to the 6.12-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 <[email protected]>.
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-6.12.y
git checkout FETCH_HEAD
git cherry-pick -x 57c347a2e2473bfb5c1f1132a3209c55efbe640b
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<[email protected]>' --in-reply-to '2026052003-opal-bling-9542@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 57c347a2e2473bfb5c1f1132a3209c55efbe640b Mon Sep 17 00:00:00 2001
From: Srinivas Pandruvada <[email protected]>
Date: Thu, 30 Apr 2026 08:11:02 -0700
Subject: [PATCH] platform/x86: intel: Add notifiers support
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In some cases a driver using services of vsec_tpmi driver requires some processing before vsec_tpmi exits. For example a children using debugfs can't use debugfs as this will be deleted by the vsec_tpmi driver.
This is the case when unbind using PCI driver interface. In this case the remove callback of vsec_tpmi driver is called first, then remove callback of its children.
Add support of blocking chain notifiers support. Notify on successful probe and before clean up in the remove callback.
drivers/platform/x86/intel/vsec_tpmi.c +19 -0
@@ -56,6 +56,7 @@#include <linux/io.h> #include <linux/iopoll.h> #include <linux/module.h> +#include <linux/notifier.h> #include <linux/pci.h> #include <linux/security.h> #include <linux/sizes.h>
@@ -188,6 +189,20 @@ struct tpmi_feature_state {/* Used during auxbus device creation */ static DEFINE_IDA (intel_vsec_tpmi_ida); +static BLOCKING_NOTIFIER_HEAD (tpmi_notify_list); + +int tpmi_register_notifier (struct notifier_block *nb) +{ +return blocking_notifier_chain_register (&tpmi_notify_list, nb); +} +EXPORT_SYMBOL_NS_GPL (tpmi_register_notifier,"INTEL_TPMI" ); + +int tpmi_unregister_notifier (struct notifier_block *nb) +{ +return blocking_notifier_chain_unregister (&tpmi_notify_list, nb); +} +EXPORT_SYMBOL_NS_GPL (tpmi_unregister_notifier,"INTEL_TPMI" ); +struct oobmsm_plat_info *tpmi_get_platform_data (struct auxiliary_device *auxdev) {struct intel_vsec_device *vsec_dev =auxdev_to_ivdev (auxdev);
@@ -832,6 +847,8 @@ static int intel_vsec_tpmi_init(struct auxiliary_device *auxdev)return ret; } +blocking_notifier_call_chain (&tpmi_notify_list,TPMI_CORE_INIT , auxdev); +return 0 ; }
@@ -845,6 +862,8 @@ static void tpmi_remove(struct auxiliary_device *auxdev) {struct intel_tpmi_info *tpmi_info =auxiliary_get_drvdata (auxdev); +blocking_notifier_call_chain (&tpmi_notify_list,TPMI_CORE_EXIT , auxdev); +debugfs_remove_recursive (tpmi_info->dbgfs_dir); }
include/linux/intel_tpmi.h +6 -0
@@ -28,6 +28,12 @@ enum intel_tpmi_id { TPMI_INFO_ID = 0x81, /* Special ID for PCI BDF and Package ID information */ }; +#define TPMI_CORE_INIT 0 +#define TPMI_CORE_EXIT 1 + +int tpmi_register_notifier (struct notifier_block *nb); +int tpmi_unregister_notifier (struct notifier_block *nb); +struct oobmsm_plat_info *tpmi_get_platform_data (struct auxiliary_device *auxdev);struct resource *tpmi_get_resource_at_index (struct auxiliary_device *auxdev,int index);int tpmi_get_resource_count (struct auxiliary_device *auxdev);