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doc: printk-formats: Remove bogus kobject references for device nodes 

When converting from text to rst, the kobjects section and its sole
subsection about device tree nodes were coalesced into a single section,
yielding an inconsistent result.

Remove all references to kobjects, as
  1. Device tree object pointers are not compatible to kobject pointers
     (the former may embed the latter, though), and
  2. there are no printk formats defined for kobject types.

Update the vsprintf() source code comments to match the above.

Fixes: b3ed23213e ("doc: convert printk-formats.txt to rst")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Geert Uytterhoeven 2018-10-08 13:08:48 +02:00 committed by Jonathan Corbet
parent 44280690ce
commit 94ac8f2074
2 changed files with 12 additions and 14 deletions
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6
Documentation/core-api/printk-formats.rst
View File

@ -376,15 +376,15 @@ correctness of the format string and va_list arguments.
Passed by reference.
kobjects
--------
Device tree nodes
-----------------
::
%pOF[fnpPcCF]
For printing kobject based structs (device nodes). Default behaviour is
For printing device tree node structures. Default behaviour is
equivalent to %pOFf.
- f - device node full_name

20
lib/vsprintf.c
View File

@ -1833,17 +1833,15 @@ static char *ptr_to_id(char *buf, char *end, void *ptr, struct printf_spec spec)
* p page flags (see struct page) given as pointer to unsigned long
* g gfp flags (GFP_* and __GFP_*) given as pointer to gfp_t
* v vma flags (VM_*) given as pointer to unsigned long
* - 'O' For a kobject based struct. Must be one of the following:
* - 'OF[fnpPcCF]' For a device tree object
* Without any optional arguments prints the full_name
* f device node full_name
* n device node name
* p device node phandle
* P device node path spec (name + @unit)
* F device node flags
* c major compatible string
* C full compatible string
*
* - 'OF[fnpPcCF]' For a device tree object
* Without any optional arguments prints the full_name
* f device node full_name
* n device node name
* p device node phandle
* P device node path spec (name + @unit)
* F device node flags
* c major compatible string
* C full compatible string
* - 'x' For printing the address. Equivalent to "%lx".
*
* ** When making changes please also update: