svn commit: r334307 - head/usr.sbin/bhyve

[Marcelo Araujo]

Author: araujo
Date: Tue May 29 01:46:00 2018
New Revision: 334307
URL: https://svnweb.freebsd.org/changeset/base/334307

Log:
  Simplify macros EFPRINTF and EFFLUSH. [0]
  Also stdarg(3) says that each invocation of va_start() must be paired
  with a corresponding invocation of va_end() in the same function. [1]
  
  Reported by:	Coverity
  CID:		1194318[0] and 1194332[1]
  Discussed with:	jhb
  MFC after:	4 weeks.
  Sponsored by:	iXsystems Inc.
  Differential Revision:	https://reviews.freebsd.org/D15548

Modified:
  head/usr.sbin/bhyve/acpi.c

Modified: head/usr.sbin/bhyve/acpi.c
==============================================================================
--- head/usr.sbin/bhyve/acpi.c	Tue May 29 01:16:00 2018	(r334306)
+++ head/usr.sbin/bhyve/acpi.c	Tue May 29 01:46:00 2018	(r334307)
@@ -118,18 +118,14 @@ struct basl_fio {
 };
 
 #define EFPRINTF(...) \
-	err = fprintf(__VA_ARGS__); if (err < 0) goto err_exit;
+	if (fprintf(__VA_ARGS__) < 0) goto err_exit;
 
 #define EFFLUSH(x) \
-	err = fflush(x); if (err != 0) goto err_exit;
+	if (fflush(x) != 0) goto err_exit;
 
 static int
 basl_fwrite_rsdp(FILE *fp)
 {
-	int err;
-
-	err = 0;
-
 	EFPRINTF(fp, "/*\n");
 	EFPRINTF(fp, " * bhyve RSDP template\n");
 	EFPRINTF(fp, " */\n");
@@ -156,10 +152,6 @@ err_exit:
 static int
 basl_fwrite_rsdt(FILE *fp)
 {
-	int err;
-
-	err = 0;
-
 	EFPRINTF(fp, "/*\n");
 	EFPRINTF(fp, " * bhyve RSDT template\n");
 	EFPRINTF(fp, " */\n");
@@ -196,10 +188,6 @@ err_exit:
 static int
 basl_fwrite_xsdt(FILE *fp)
 {
-	int err;
-
-	err = 0;
-
 	EFPRINTF(fp, "/*\n");
 	EFPRINTF(fp, " * bhyve XSDT template\n");
 	EFPRINTF(fp, " */\n");
@@ -236,11 +224,8 @@ err_exit:
 static int
 basl_fwrite_madt(FILE *fp)
 {
-	int err;
 	int i;
 
-	err = 0;
-
 	EFPRINTF(fp, "/*\n");
 	EFPRINTF(fp, " * bhyve MADT template\n");
 	EFPRINTF(fp, " */\n");
@@ -326,10 +311,6 @@ err_exit:
 static int
 basl_fwrite_fadt(FILE *fp)
 {
-	int err;
-
-	err = 0;
-
 	EFPRINTF(fp, "/*\n");
 	EFPRINTF(fp, " * bhyve FADT template\n");
 	EFPRINTF(fp, " */\n");
@@ -547,10 +528,6 @@ err_exit:
 static int
 basl_fwrite_hpet(FILE *fp)
 {
-	int err;
-
-	err = 0;
-
 	EFPRINTF(fp, "/*\n");
 	EFPRINTF(fp, " * bhyve HPET template\n");
 	EFPRINTF(fp, " */\n");
@@ -596,8 +573,6 @@ err_exit:
 static int
 basl_fwrite_mcfg(FILE *fp)
 {
-	int err = 0;
-
 	EFPRINTF(fp, "/*\n");
 	EFPRINTF(fp, " * bhyve MCFG template\n");
 	EFPRINTF(fp, " */\n");
@@ -629,10 +604,6 @@ err_exit:
 static int
 basl_fwrite_facs(FILE *fp)
 {
-	int err;
-
-	err = 0;
-
 	EFPRINTF(fp, "/*\n");
 	EFPRINTF(fp, " * bhyve FACS template\n");
 	EFPRINTF(fp, " */\n");
@@ -666,7 +637,6 @@ void
 dsdt_line(const char *fmt, ...)
 {
 	va_list ap;
-	int err;
 
 	if (dsdt_error != 0)
 		return;
@@ -675,8 +645,10 @@ dsdt_line(const char *fmt, ...)
 		if (dsdt_indent_level != 0)
 			EFPRINTF(dsdt_fp, "%*c", dsdt_indent_level * 2, ' ');
 		va_start(ap, fmt);
-		if (vfprintf(dsdt_fp, fmt, ap) < 0)
+		if (vfprintf(dsdt_fp, fmt, ap) < 0) {
+			va_end(ap);
 			goto err_exit;
+		}
 		va_end(ap);
 	}
 	EFPRINTF(dsdt_fp, "\n");
@@ -735,9 +707,6 @@ dsdt_fixed_mem32(uint32_t base, uint32_t length)
 static int
 basl_fwrite_dsdt(FILE *fp)
 {
-	int err;
-
-	err = 0;
 	dsdt_fp = fp;
 	dsdt_error = 0;
 	dsdt_indent_level = 0;