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>

5 files changed, 23 insertions, 38 deletions

diff --git a/hw/sd/aspeed_sdhci.c b/hw/sd/aspeed_sdhci.c
index 538d3bad3d..22cafce0fb 100644
--- a/hw/sd/aspeed_sdhci.c
+++ b/hw/sd/aspeed_sdhci.c
@@ -115,7 +115,6 @@ static void aspeed_sdhci_set_irq(void *opaque, int n, int level)
 
 static void aspeed_sdhci_realize(DeviceState *dev, Error **errp)
 {
-    Error *err = NULL;
     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
     AspeedSDHCIState *sdhci = ASPEED_SDHCI(dev);
 
@@ -132,22 +131,16 @@ static void aspeed_sdhci_realize(DeviceState *dev, Error **errp)
         Object *sdhci_slot = OBJECT(&sdhci->slots[i]);
         SysBusDevice *sbd_slot = SYS_BUS_DEVICE(&sdhci->slots[i]);
 
-        object_property_set_int(sdhci_slot, 2, "sd-spec-version", &err);
-        if (err) {
-            error_propagate(errp, err);
+        if (!object_property_set_int(sdhci_slot, "sd-spec-version", 2, errp)) {
             return;
         }
 
-        object_property_set_uint(sdhci_slot, ASPEED_SDHCI_CAPABILITIES,
-                                 "capareg", &err);
-        if (err) {
-            error_propagate(errp, err);
+        if (!object_property_set_uint(sdhci_slot, "capareg",
+                                      ASPEED_SDHCI_CAPABILITIES, errp)) {
             return;
         }
 
-        sysbus_realize(sbd_slot, &err);
-        if (err) {
-            error_propagate(errp, err);
+        if (!sysbus_realize(sbd_slot, errp)) {
             return;
         }
 
diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 97a9d32964..5137168d66 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -706,8 +706,7 @@ SDState *sd_init(BlockBackend *blk, bool is_spi)
 
     obj = object_new(TYPE_SD_CARD);
     dev = DEVICE(obj);
-    qdev_prop_set_drive_err(dev, "drive", blk, &err);
-    if (err) {
+    if (!qdev_prop_set_drive_err(dev, "drive", blk, &err)) {
         error_reportf_err(err, "sd_init failed: ");
         return NULL;
     }
diff --git a/hw/sd/sdhci-pci.c b/hw/sd/sdhci-pci.c
index 4f5977d487..c737c8b930 100644
--- a/hw/sd/sdhci-pci.c
+++ b/hw/sd/sdhci-pci.c
@@ -29,13 +29,12 @@ static Property sdhci_pci_properties[] = {
 
 static void sdhci_pci_realize(PCIDevice *dev, Error **errp)
 {
+    ERRP_GUARD();
     SDHCIState *s = PCI_SDHCI(dev);
-    Error *local_err = NULL;
 
     sdhci_initfn(s);
-    sdhci_common_realize(s, &local_err);
-    if (local_err) {
-        error_propagate(errp, local_err);
+    sdhci_common_realize(s, errp);
+    if (*errp) {
         return;
     }
 
diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
index eb2be6529e..deac181865 100644
--- a/hw/sd/sdhci.c
+++ b/hw/sd/sdhci.c
@@ -1288,7 +1288,7 @@ static const MemoryRegionOps sdhci_mmio_ops = {
 
 static void sdhci_init_readonly_registers(SDHCIState *s, Error **errp)
 {
-    Error *local_err = NULL;
+    ERRP_GUARD();
 
     switch (s->sd_spec_version) {
     case 2 ... 3:
@@ -1299,9 +1299,8 @@ static void sdhci_init_readonly_registers(SDHCIState *s, Error **errp)
     }
     s->version = (SDHC_HCVER_VENDOR << 8) | (s->sd_spec_version - 1);
 
-    sdhci_check_capareg(s, &local_err);
-    if (local_err) {
-        error_propagate(errp, local_err);
+    sdhci_check_capareg(s, errp);
+    if (*errp) {
         return;
     }
 }
@@ -1332,11 +1331,10 @@ void sdhci_uninitfn(SDHCIState *s)
 
 void sdhci_common_realize(SDHCIState *s, Error **errp)
 {
-    Error *local_err = NULL;
+    ERRP_GUARD();
 
-    sdhci_init_readonly_registers(s, &local_err);
-    if (local_err) {
-        error_propagate(errp, local_err);
+    sdhci_init_readonly_registers(s, errp);
+    if (*errp) {
         return;
     }
     s->buf_maxsz = sdhci_get_fifolen(s);
@@ -1456,13 +1454,12 @@ static void sdhci_sysbus_finalize(Object *obj)
 
 static void sdhci_sysbus_realize(DeviceState *dev, Error **errp)
 {
+    ERRP_GUARD();
     SDHCIState *s = SYSBUS_SDHCI(dev);
     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
-    Error *local_err = NULL;
 
-    sdhci_common_realize(s, &local_err);
-    if (local_err) {
-        error_propagate(errp, local_err);
+    sdhci_common_realize(s, errp);
+    if (*errp) {
         return;
     }
 
diff --git a/hw/sd/ssi-sd.c b/hw/sd/ssi-sd.c
index 25cdf4c966..9210ef567f 100644
--- a/hw/sd/ssi-sd.c
+++ b/hw/sd/ssi-sd.c
@@ -241,10 +241,10 @@ static const VMStateDescription vmstate_ssi_sd = {
 
 static void ssi_sd_realize(SSISlave *d, Error **errp)
 {
+    ERRP_GUARD();
     ssi_sd_state *s = SSI_SD(d);
     DeviceState *carddev;
     DriveInfo *dinfo;
-    Error *err = NULL;
 
     qbus_create_inplace(&s->sdbus, sizeof(s->sdbus), TYPE_SD_BUS,
                         DEVICE(d), "sd-bus");
@@ -254,27 +254,24 @@ static void ssi_sd_realize(SSISlave *d, Error **errp)
     dinfo = drive_get_next(IF_SD);
     carddev = qdev_new(TYPE_SD_CARD);
     if (dinfo) {
-        qdev_prop_set_drive_err(carddev, "drive", blk_by_legacy_dinfo(dinfo),
-                                &err);
-        if (err) {
+        if (!qdev_prop_set_drive_err(carddev, "drive",
+                                     blk_by_legacy_dinfo(dinfo), errp)) {
             goto fail;
         }
     }
 
-    object_property_set_bool(OBJECT(carddev), true, "spi", &err);
-    if (err) {
+    if (!object_property_set_bool(OBJECT(carddev), "spi", true, errp)) {
         goto fail;
     }
 
-    qdev_realize_and_unref(carddev, BUS(&s->sdbus), &err);
-    if (err) {
+    if (!qdev_realize_and_unref(carddev, BUS(&s->sdbus), errp)) {
         goto fail;
     }
 
     return;
 
 fail:
-    error_propagate_prepend(errp, err, "failed to init SD card: ");
+    error_prepend(errp, "failed to init SD card: ");
 }
 
 static void ssi_sd_reset(DeviceState *dev)