Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2020-07-07-v2' into staging

Error reporting patches patches for 2020-07-07

# gpg: Signature made Fri 10 Jul 2020 14:24:42 BST
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-error-2020-07-07-v2: (53 commits)
  xen: Use ERRP_GUARD()
  nbd: Use ERRP_GUARD()
  virtio-9p: Use ERRP_GUARD()
  fw_cfg: Use ERRP_GUARD()
  pflash: Use ERRP_GUARD()
  sd: Use ERRP_GUARD()
  scripts: Coccinelle script to use ERRP_GUARD()
  error: New macro ERRP_GUARD()
  hmp: Ignore Error objects where the return value suffices
  qdev: Ignore Error objects where the return value suffices
  qemu-img: Ignore Error objects where the return value suffices
  error: Avoid error_propagate() after migrate_add_blocker()
  qapi: Purge error_propagate() from QAPI core
  qapi: Smooth visitor error checking in generated code
  qapi: Smooth another visitor error checking pattern
  block/parallels: Simplify parallels_open() after previous commit
  error: Reduce unnecessary error propagation
  error: Eliminate error_propagate() manually
  error: Eliminate error_propagate() with Coccinelle, part 2
  error: Eliminate error_propagate() with Coccinelle, part 1
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

2 files changed, 6 insertions, 7 deletions

diff --git a/hw/9pfs/9p-local.c b/hw/9pfs/9p-local.c
index 54e012e5b4..3107637209 100644
--- a/hw/9pfs/9p-local.c
+++ b/hw/9pfs/9p-local.c
@@ -1479,10 +1479,10 @@ static void error_append_security_model_hint(Error *const *errp)
 
 static int local_parse_opts(QemuOpts *opts, FsDriverEntry *fse, Error **errp)
 {
+    ERRP_GUARD();
     const char *sec_model = qemu_opt_get(opts, "security_model");
     const char *path = qemu_opt_get(opts, "path");
     const char *multidevs = qemu_opt_get(opts, "multidevs");
-    Error *local_err = NULL;
 
     if (!sec_model) {
         error_setg(errp, "security_model property not set");
@@ -1516,11 +1516,10 @@ static int local_parse_opts(QemuOpts *opts, FsDriverEntry *fse, Error **errp)
             fse->export_flags &= ~V9FS_FORBID_MULTIDEVS;
             fse->export_flags &= ~V9FS_REMAP_INODES;
         } else {
-            error_setg(&local_err, "invalid multidevs property '%s'",
+            error_setg(errp, "invalid multidevs property '%s'",
                        multidevs);
-            error_append_hint(&local_err, "Valid options are: multidevs="
+            error_append_hint(errp, "Valid options are: multidevs="
                               "[remap|forbid|warn]\n");
-            error_propagate(errp, local_err);
             return -1;
         }
     }
@@ -1530,9 +1529,8 @@ static int local_parse_opts(QemuOpts *opts, FsDriverEntry *fse, Error **errp)
         return -1;
     }
 
-    if (fsdev_throttle_parse_opts(opts, &fse->fst, &local_err)) {
-        error_propagate_prepend(errp, local_err,
-                                "invalid throttle configuration: ");
+    if (fsdev_throttle_parse_opts(opts, &fse->fst, errp)) {
+        error_prepend(errp, "invalid throttle configuration: ");
         return -1;
     }
 
diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
index 9755fba9a9..2ffd96ade9 100644
--- a/hw/9pfs/9p.c
+++ b/hw/9pfs/9p.c
@@ -4011,6 +4011,7 @@ void pdu_submit(V9fsPDU *pdu, P9MsgHeader *hdr)
 int v9fs_device_realize_common(V9fsState *s, const V9fsTransport *t,
                                Error **errp)
 {
+    ERRP_GUARD();
     int i, len;
     struct stat stat;
     FsDriverEntry *fse;