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-rw-r--r--util/msrtool/msrtool.c27
1 files changed, 14 insertions, 13 deletions
diff --git a/util/msrtool/msrtool.c b/util/msrtool/msrtool.c
index 56d2591db4..7ef40d82b4 100644
--- a/util/msrtool/msrtool.c
+++ b/util/msrtool/msrtool.c
@@ -182,7 +182,7 @@ done:
int do_diff(const char *difffn) {
char tmpfn[20], line[512];
size_t start, len;
- int ret = 1, tmp;
+ int ret = 1, found, tmp;
FILE *fin = NULL, *fout = stdout;
uint8_t rev = 0;
uint32_t addr, linenum;
@@ -203,19 +203,20 @@ int do_diff(const char *difffn) {
goto done;
for (linenum = 1; NULL != fgets(line, sizeof(line), fin); ++linenum) {
start = (0 == strncmp("0x", line, 2)) ? 2 : 0;
- if (sscanf(line + start, "%8x %n%*x", &addr, &tmp) >= 1) {
- start += tmp;
- for (len = strlen(line) - 1; NULL != strchr("\r\n", line[len]); --len)
- line[len] = 0;
- if (!str2msr(line + start, &mf)) {
- fprintf(stderr, "%s:%d: invalid MSR value '%s'\n", difffn, linenum, line + start);
- continue;
- }
- if (!sys->rdmsr(cpu, addr, &mhw))
- goto done;
- if (diff_msr(fout, addr, rev ? mhw : mf, rev ? mf : mhw))
- fprintf(fout, "\n");
+ found = sscanf(line + start, "%8x %n%*x", &addr, &tmp);
+ if (found < 1)
+ continue;
+ start += tmp;
+ for (len = strlen(line) - 1; NULL != strchr("\r\n", line[len]); --len)
+ line[len] = 0;
+ if (!str2msr(line + start, &mf)) {
+ fprintf(stderr, "%s:%d: invalid MSR value '%s'\n", difffn, linenum, line + start);
+ continue;
}
+ if (!sys->rdmsr(cpu, addr, &mhw))
+ goto done;
+ if (diff_msr(fout, addr, rev ? mhw : mf, rev ? mf : mhw))
+ fprintf(fout, "\n");
}
if (!feof(fin))
fprintf(stderr, "%s:%d: fgets: %s\n", difffn, linenum, strerror(errno));