From: Min Li <min.li...@renesas.com> Feed kstrtou8 with NULL terminated string.
Signed-off-by: Min Li <min.li...@renesas.com> --- drivers/ptp/ptp_clockmatrix.c | 52 +++++++++++++++++++++++++++++++------------ 1 file changed, 38 insertions(+), 14 deletions(-) diff --git a/drivers/ptp/ptp_clockmatrix.c b/drivers/ptp/ptp_clockmatrix.c index e020faf..bf2be50 100644 --- a/drivers/ptp/ptp_clockmatrix.c +++ b/drivers/ptp/ptp_clockmatrix.c @@ -103,42 +103,66 @@ static int timespec_to_char_array(struct timespec64 const *ts, return 0; } -static int idtcm_strverscmp(const char *ver1, const char *ver2) +static int idtcm_strverscmp(const char *version1, const char *version2) { u8 num1; u8 num2; int result = 0; + char ver1[16]; + char ver2[16]; + char *cur1; + char *cur2; + char *next1; + char *next2; + + strncpy(ver1, version1, 16); + strncpy(ver2, version2, 16); + cur1 = ver1; + cur2 = ver2; /* loop through each level of the version string */ while (result == 0) { + next1 = strchr(cur1, '.'); + next2 = strchr(cur2, '.'); + + /* kstrtou8 could fail for dot */ + if (next1) { + *next1 = '\0'; + next1++; + } + + if (next2) { + *next2 = '\0'; + next2++; + } + /* extract leading version numbers */ - if (kstrtou8(ver1, 10, &num1) < 0) + if (kstrtou8(cur1, 10, &num1) < 0) return -1; - if (kstrtou8(ver2, 10, &num2) < 0) + if (kstrtou8(cur2, 10, &num2) < 0) return -1; /* if numbers differ, then set the result */ - if (num1 < num2) + if (num1 < num2) { result = -1; - else if (num1 > num2) + } else if (num1 > num2) { result = 1; - else { + } else { /* if numbers are the same, go to next level */ - ver1 = strchr(ver1, '.'); - ver2 = strchr(ver2, '.'); - if (!ver1 && !ver2) + if (!next1 && !next2) break; - else if (!ver1) + else if (!next1) { result = -1; - else if (!ver2) + } else if (!next2) { result = 1; - else { - ver1++; - ver2++; + } else { + cur1 = next1; + cur2 = next2; } } } + return result; } -- 2.7.4