Commit 29a28066 authored by Arvind Sankar's avatar Arvind Sankar Committed by Ard Biesheuvel
Browse files

efi/printf: Drop %n format and L qualifier 



%n is unused and deprecated.

The L qualifer is parsed but not actually implemented.

Signed-off-by: default avatarArvind Sankar <nivedita@alum.mit.edu>
Link: https://lore.kernel.org/r/20200518190716.751506-7-nivedita@alum.mit.edu


Signed-off-by: default avatarArd Biesheuvel <ardb@kernel.org>
parent bbf8e8b0

drivers/firmware/efi/libstub/vsprintf.c

+2 −12
Original line number Diff line number Diff line
@@ -127,7 +127,7 @@ int vsprintf(char *buf, const char *fmt, va_list args) 
	int field_width;	/* width of output field */

	int precision;		/* min. # of digits for integers; max

				   number of chars for from string */

	int qualifier;		/* 'h', 'l', or 'L' for integer fields */

	int qualifier;		/* 'h' or 'l' for integer fields */



	for (str = buf; *fmt; ++fmt) {

		if (*fmt != '%') {
@@ -188,7 +188,7 @@ int vsprintf(char *buf, const char *fmt, va_list args) 


		/* get the conversion qualifier */

		qualifier = -1;

		if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L') {

		if (*fmt == 'h' || *fmt == 'l') {

			qualifier = *fmt;

			++fmt;

		}
@@ -229,16 +229,6 @@ int vsprintf(char *buf, const char *fmt, va_list args) 
				     field_width, precision, flags);

			continue;



		case 'n':

			if (qualifier == 'l') {

				long *ip = va_arg(args, long *);

				*ip = (str - buf);

			} else {

				int *ip = va_arg(args, int *);

				*ip = (str - buf);

			}

			continue;



		case '%':

			*str++ = '%';

			continue;

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