Guenter Roeck b84000f227 hwmon: (pmbus_core) Fix Deadlock in pmbus_regulator_get_status
pmbus_regulator_get_status() acquires update_lock.
pmbus_regulator_get_error_flags() acquires it again, resulting in an
immediate deadlock.

Call _pmbus_get_flags() from pmbus_regulator_get_status() directly
to avoid the problem.

Reported-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Closes: https://lore.kernel.org/linux-hwmon/b7a3ad85-aab4-4718-a001-1d8b1c0eef36@roeck-us.net/T/#u
Cc: Naresh Solanki <Naresh.Solanki@9elements.com>
Cc: stable@vger.kernel.org # v6.2+
Fixes: c05f477c4b ("hwmon: (pmbus/core) Implement regulator get_status")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-07-26 20:34:30 -07:00
2022-09-28 09:02:20 +02:00
2023-07-09 10:29:53 -07:00
2023-07-09 13:53:13 -07:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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