+static void i915_error_vprintf(struct drm_i915_error_state_buf *e,
+ const char *f, va_list args)
+{
+ unsigned len;
+
+ if (!__i915_error_ok(e))
+ return;
+
+ /* Seek the first printf which is hits start position */
+ if (e->pos < e->start) {
+ len = vsnprintf(NULL, 0, f, args);
+ if (!__i915_error_seek(e, len))
+ return;
+ }
+
+ len = vsnprintf(e->buf + e->bytes, e->size - e->bytes, f, args);
+ if (len >= e->size - e->bytes)
+ len = e->size - e->bytes - 1;
+
+ __i915_error_advance(e, len);
+}
+
+static void i915_error_puts(struct drm_i915_error_state_buf *e,
+ const char *str)
+{
+ unsigned len;
+
+ if (!__i915_error_ok(e))
+ return;
+
+ len = strlen(str);
+
+ /* Seek the first printf which is hits start position */
+ if (e->pos < e->start) {
+ if (!__i915_error_seek(e, len))
+ return;
+ }
+
+ if (len >= e->size - e->bytes)
+ len = e->size - e->bytes - 1;
+ memcpy(e->buf + e->bytes, str, len);
+
+ __i915_error_advance(e, len);
+}
+