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Filename Latest commit message Latest commit date
Andy Shevchenko 2608687547 device property: Keep secondary firmware node secondary by type
commit d5dcce0c414fcbfe4c2037b66ac69ea5f9b3f75c upstream.

Behind primary and secondary we understand the type of the nodes
which might define their ordering. However, if primary node gone,
we can't maintain the ordering by definition of the linked list.
Thus, by ordering secondary node becomes first in the list.
But in this case the meaning of it is still secondary (or auxiliary).
The type of the node is maintained by the secondary pointer in it:

	secondary pointer		Meaning
	NULL or valid			primary node
	ERR_PTR(-ENODEV)		secondary node

So, if by some reason we do the following sequence of calls

	set_primary_fwnode(dev, NULL);
	set_primary_fwnode(dev, primary);

we should preserve secondary node.

This concept is supported by the description of set_primary_fwnode()
along with implementation of set_secondary_fwnode(). Hence, fix
the commit c15e1bdda436 to follow this as well.

Fixes: c15e1bdda436 ("device property: Fix the secondary firmware node handling in set_primary_fwnode()")
Cc: Ferry Toth <fntoth@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Tested-by: Ferry Toth <fntoth@gmail.com>
Cc: 5.9+ <stable@vger.kernel.org> # 5.9+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-05 11:43:37 +01:00
arch ARM: s3c24xx: fix missing system reset 2020-11-05 11:43:37 +01:00
block
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drivers device property: Keep secondary firmware node secondary by type 2020-11-05 11:43:37 +01:00
fs cachefiles: Handle readpage error correctly 2020-11-05 11:43:36 +01:00
include hil/parisc: Disable HIL driver when it gets stuck 2020-11-05 11:43:36 +01:00
init printk: reduce LOG_BUF_SHIFT range for H8300 2020-11-05 11:43:16 +01:00
ipc
kernel ring-buffer: Return 0 on success from ring_buffer_resize() 2020-11-05 11:43:35 +01:00
lib sgl_alloc_order: fix memory leak 2020-11-05 11:43:22 +01:00
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net libceph: clear con->out_msg on Policy::stateful_server faults 2020-11-05 11:43:34 +01:00
samples samples/bpf: Fix possible deadlock in xdpsock 2020-11-05 11:43:17 +01:00
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tools perf python scripting: Fix printable strings in python3 scripts 2020-11-05 11:43:32 +01:00
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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.