From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Li Ming <ming.li@zohomail.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
Danilo Krummrich <dakr@kernel.org>,
Davidlohr Bueso <dave@stgolabs.net>,
Jonathan Cameron <jonathan.cameron@huawei.com>,
Dave Jiang <dave.jiang@intel.com>,
Alison Schofield <alison.schofield@intel.com>,
Vishal Verma <vishal.l.verma@intel.com>,
Ira Weiny <ira.weiny@intel.com>,
Dan Williams <dan.j.williams@intel.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Ben Cheatham <benjamin.cheatham@amd.com>,
driver-core@lists.linux.dev, linux-kernel@vger.kernel.org,
linux-cxl@vger.kernel.org
Subject: Re: [PATCH 1/7] driver core: Add conditional guard support for device_lock()
Date: Thu, 12 Mar 2026 15:35:05 +0100 [thread overview]
Message-ID: <2026031258-freefall-cherub-23d2@gregkh> (raw)
In-Reply-To: <20260310-fix_access_endpoint_without_drv_check-v1-1-94fe919a0b87@zohomail.com>
On Tue, Mar 10, 2026 at 11:57:53PM +0800, Li Ming wrote:
> Introduce conditional guard version of device_lock() for scenarios that
> require conditional device lock holding.
>
> Suggested-by: Dan Williams <dan.j.williams@intel.com>
> Signed-off-by: Li Ming <ming.li@zohomail.com>
> ---
> include/linux/device.h | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/include/linux/device.h b/include/linux/device.h
> index 0be95294b6e6..4fafee80524b 100644
> --- a/include/linux/device.h
> +++ b/include/linux/device.h
> @@ -911,6 +911,7 @@ static inline void device_unlock(struct device *dev)
> }
>
> DEFINE_GUARD(device, struct device *, device_lock(_T), device_unlock(_T))
> +DEFINE_GUARD_COND(device, _intr, device_lock_interruptible(_T), _RET == 0)
>
> static inline void device_lock_assert(struct device *dev)
> {
>
> --
> 2.43.0
>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
next prev parent reply other threads:[~2026-03-12 14:35 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-10 15:57 [PATCH 0/7] cxl: Consolidate cxlmd->endpoint accessing Li Ming
2026-03-10 15:57 ` [PATCH 1/7] driver core: Add conditional guard support for device_lock() Li Ming
2026-03-10 17:45 ` Dave Jiang
2026-03-10 18:06 ` Danilo Krummrich
2026-03-10 18:09 ` Dave Jiang
2026-03-10 18:39 ` Dan Williams
2026-03-10 19:17 ` Danilo Krummrich
2026-03-10 20:37 ` Dan Williams
2026-03-10 20:41 ` Danilo Krummrich
2026-03-12 14:35 ` Greg Kroah-Hartman [this message]
2026-03-14 15:14 ` Danilo Krummrich
2026-03-10 15:57 ` [PATCH 2/7] cxl/memdev: Hold memdev lock during memdev poison injection/clear Li Ming
2026-03-10 17:53 ` Dave Jiang
2026-03-10 19:29 ` Alison Schofield
2026-03-10 21:34 ` Alison Schofield
2026-03-11 10:53 ` Li Ming
2026-03-12 4:05 ` Alison Schofield
2026-03-12 10:45 ` Li Ming
2026-03-10 15:57 ` [PATCH 3/7] cxl/region: Hold memdev lock during region " Li Ming
2026-03-10 19:54 ` Dan Williams
2026-03-10 21:57 ` Alison Schofield
2026-03-11 11:10 ` Li Ming
2026-03-17 2:10 ` Dan Williams
2026-03-10 15:57 ` [PATCH 4/7] cxl/pci: Hold memdev lock in cxl_event_trace_record() Li Ming
2026-03-10 19:33 ` Dan Williams
2026-03-11 11:11 ` Li Ming
2026-03-10 20:52 ` Dave Jiang
2026-03-11 11:12 ` Li Ming
2026-03-10 15:57 ` [PATCH 5/7] cxl/region: Ensure endpoint is valid in cxl_dpa_to_region() Li Ming
2026-03-10 20:53 ` Dave Jiang
2026-03-10 15:57 ` [PATCH 6/7] cxl/pci: Check memdev driver binding status in cxl_reset_done() Li Ming
2026-03-10 19:31 ` Dan Williams
2026-03-10 20:50 ` Dave Jiang
2026-03-10 15:57 ` [PATCH 7/7] cxl/port: Reset cxlmd->endpoint to -ENXIO by default Li Ming
2026-03-10 19:29 ` Dan Williams
2026-03-11 12:14 ` Li Ming
2026-03-10 19:20 ` [PATCH 0/7] cxl: Consolidate cxlmd->endpoint accessing Alison Schofield
2026-03-11 10:41 ` Li Ming
2026-03-10 20:33 ` Dan Williams
2026-03-11 10:44 ` Li Ming
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