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kconfig: add fflush() before ferror() check 

[ Upstream commit 868653f421 ]

As David Laight pointed out, there is not much point in calling
ferror() unless you call fflush() first.

Reported-by: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Masahiro Yamada 2022-02-13 01:18:37 +09:00 committed by Greg Kroah-Hartman
parent f546a1c3d3
commit 75d2028b95
1 changed files with 2 additions and 0 deletions
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2
scripts/kconfig/confdata.c
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@ -979,6 +979,7 @@ static int conf_write_autoconf_cmd(const char *autoconf_name)
fprintf(out, "\n$(deps_config): ;\n");
fflush(out);
ret = ferror(out); /* error check for all fprintf() calls */
fclose(out);
if (ret)
@ -1097,6 +1098,7 @@ static int __conf_write_autoconf(const char *filename,
if ((sym->flags & SYMBOL_WRITE) && sym->name)
print_symbol(file, sym);
fflush(file);
/* check possible errors in conf_write_heading() and print_symbol() */
ret = ferror(file);
fclose(file);