cam/nvme: Remove spurious newline during periph detach announcement

Other protocol denounce routines use a "short" variant of announce
that does not include a trailing newline.

Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D41176

sys/cam/nvme/nvme_all.c

@@ -89,7 +89,14 @@ void
 nvme_print_ident(const struct nvme_controller_data *cdata,
     const struct nvme_namespace_data *data, struct sbuf *sb)
 {
+	nvme_print_ident_short(cdata, data, sb);
+	sbuf_printf(sb, "\n");
+}
 
+void
+nvme_print_ident_short(const struct nvme_controller_data *cdata,
+    const struct nvme_namespace_data *data, struct sbuf *sb)
+{
 	sbuf_printf(sb, "<");
 	cam_strvis_sbuf(sb, cdata->mn, sizeof(cdata->mn),
 	    CAM_STRVIS_FLAG_NONASCII_SPC);
@@ -99,7 +106,7 @@ nvme_print_ident(const struct nvme_controller_data *cdata,
 	sbuf_printf(sb, " ");
 	cam_strvis_sbuf(sb, cdata->sn, sizeof(cdata->sn),
 	    CAM_STRVIS_FLAG_NONASCII_SPC);
-	sbuf_printf(sb, ">\n");
+	sbuf_printf(sb, ">");
 }
 
 /* XXX need to do nvme admin opcodes too, but those aren't used yet by nda */

sys/cam/nvme/nvme_all.h

@@ -42,6 +42,8 @@ int	nvme_identify_match(caddr_t identbuffer, caddr_t table_entry);
 
 struct sbuf;
 void	nvme_print_ident(const struct nvme_controller_data *, const struct nvme_namespace_data *, struct sbuf *);
+void	nvme_print_ident_short(const struct nvme_controller_data *,
+    const struct nvme_namespace_data *, struct sbuf *);
 const char *nvme_op_string(const struct nvme_command *, int admin);
 const char *nvme_cmd_string(const struct nvme_command *, char *, size_t);
 void nvme_cmd_sbuf(const struct nvme_command *, struct sbuf *sb);

sys/cam/nvme/nvme_xpt.c

@@ -838,8 +838,13 @@ nvme_proto_announce(struct cam_ed *device)
 static void
 nvme_proto_denounce(struct cam_ed *device)
 {
+	struct sbuf	sb;
+	char		buffer[120];
 
-	nvme_proto_announce(device);
+	sbuf_new(&sb, buffer, sizeof(buffer), SBUF_FIXEDLEN);
+	nvme_print_ident_short(device->nvme_cdata, device->nvme_data, &sb);
+	sbuf_finish(&sb);
+	sbuf_putbuf(&sb);
 }
 
 static void