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Documentation/printf: struct resource add start == end special case

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The code when printing a struct resource will check for start == end and
only print the start value.

Document this special case.

Suggested-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20241025-cxl-pra-v2-2-123a825daba2@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
This commit is contained in:
Ira Weiny 2024-10-25 19:46:54 -05:00 committed by Dave Jiang
parent 8e7f07e608
commit 3dff66ff83
1 changed files with 6 additions and 1 deletions
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7
Documentation/core-api/printk-formats.rst
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@ -209,12 +209,17 @@ Struct Resources
::
%pr [mem 0x60000000-0x6fffffff flags 0x2200] or
[mem 0x60000000 flags 0x2200] or
[mem 0x0000000060000000-0x000000006fffffff flags 0x2200]
[mem 0x0000000060000000 flags 0x2200]
%pR [mem 0x60000000-0x6fffffff pref] or
[mem 0x60000000 pref] or
[mem 0x0000000060000000-0x000000006fffffff pref]
[mem 0x0000000060000000 pref]
For printing struct resources. The ``R`` and ``r`` specifiers result in a
printed resource with (R) or without (r) a decoded flags member.
printed resource with (R) or without (r) a decoded flags member. If start is
equal to end only print the start value.
Passed by reference.