net: sfc: Use scnprintf() for avoiding potential buffer overflow

Since snprintf() returns the would-be-output size instead of the
actual output size, the succeeding calls may go beyond the given
buffer limit.  Fix it by replacing with scnprintf().

Cc: "David S . Miller" <>
Cc: Edward Cree <>
Cc: Martin Habets <>
Cc: Solarflare linux maintainers <>
Signed-off-by: Takashi Iwai <>
Signed-off-by: David S. Miller <>
1 file changed