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Add comments for debug() and pr_fmt
Add a note to each of these so it is more obvious how they work. Signed-off-by: Simon Glass <sjg@chromium.org>
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@ -101,6 +101,7 @@ typedef volatile unsigned char vu_char;
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#define _DEBUG 0
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#endif
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/* Define this at the top of a file to add a prefix to debug messages */
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#ifndef pr_fmt
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#define pr_fmt(fmt) fmt
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#endif
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@ -116,6 +117,7 @@ typedef volatile unsigned char vu_char;
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printf(pr_fmt(fmt), ##args); \
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} while (0)
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/* Show a message if DEBUG is defined in a file */
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#define debug(fmt, args...) \
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debug_cond(_DEBUG, fmt, ##args)
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