Merge remote-tracking branch 'remotes/armbru/tags/pull-error-2016-01-13' into staging

Error reporting patches for 2016-01-13

# gpg: Signature made Wed 13 Jan 2016 14:21:48 GMT using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"

* remotes/armbru/tags/pull-error-2016-01-13: (41 commits)
  checkpatch: Detect newlines in error_report and other error functions
  error: Consistently name Error * objects err, and not errp
  s390/sclp: Simplify control flow in sclp_realize()
  hw/s390x: Rename local variables Error *l_err to just err
  error: Clean up errors with embedded newlines (again)
  vhdx: Fix "log that needs to be replayed" error message
  pci-assign: Clean up "Failed to assign" error messages
  vmdk: Clean up "Invalid extent lines" error message
  vmdk: Clean up control flow in vmdk_parse_extents() a bit
  error: Strip trailing '\n' from error string arguments (again)
  qemu-io qemu-nbd: Use error_report() etc. instead of fprintf()
  migration: Use error_reportf_err() instead of monitor_printf()
  spapr: Use error_reportf_err()
  error: Use error_prepend() where it makes obvious sense
  error: Use error_reportf_err() where it makes obvious sense
  error: Don't decorate original error message when adding to it
  error: New error_prepend(), error_reportf_err()
  test-throttle: Simplify qemu_init_main_loop() error handling
  qemu-nbd: Clean up "Failed to load snapshot" error message
  block: Clean up "Could not create temporary overlay" error message
  ...

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

4 files changed, 25 insertions, 29 deletions

diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
index b91fcc6e79..9c01be5ca9 100644
--- a/hw/s390x/ipl.c
+++ b/hw/s390x/ipl.c
@@ -76,7 +76,7 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
     S390IPLState *ipl = S390_IPL(dev);
     uint64_t pentry = KERN_IMAGE_START;
     int kernel_size;
-    Error *l_err = NULL;
+    Error *err = NULL;
 
     int bios_size;
     char *bios_filename;
@@ -94,7 +94,7 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
 
         bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
         if (bios_filename == NULL) {
-            error_setg(&l_err, "could not find stage1 bootloader\n");
+            error_setg(&err, "could not find stage1 bootloader");
             goto error;
         }
 
@@ -113,7 +113,7 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
         g_free(bios_filename);
 
         if (bios_size == -1) {
-            error_setg(&l_err, "could not load bootloader '%s'\n", bios_name);
+            error_setg(&err, "could not load bootloader '%s'", bios_name);
             goto error;
         }
 
@@ -128,7 +128,7 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
             kernel_size = load_image_targphys(ipl->kernel, 0, ram_size);
         }
         if (kernel_size < 0) {
-            error_setg(&l_err, "could not load kernel '%s'\n", ipl->kernel);
+            error_setg(&err, "could not load kernel '%s'", ipl->kernel);
             goto error;
         }
         /*
@@ -156,7 +156,7 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
             initrd_size = load_image_targphys(ipl->initrd, initrd_offset,
                                               ram_size - initrd_offset);
             if (initrd_size == -1) {
-                error_setg(&l_err, "could not load initrd '%s'\n", ipl->initrd);
+                error_setg(&err, "could not load initrd '%s'", ipl->initrd);
                 goto error;
             }
 
@@ -170,7 +170,7 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
     }
     qemu_register_reset(qdev_reset_all_fn, dev);
 error:
-    error_propagate(errp, l_err);
+    error_propagate(errp, err);
 }
 
 static Property s390_ipl_properties[] = {
diff --git a/hw/s390x/s390-skeys-kvm.c b/hw/s390x/s390-skeys-kvm.c
index 682949afb2..eaa37ba408 100644
--- a/hw/s390x/s390-skeys-kvm.c
+++ b/hw/s390x/s390-skeys-kvm.c
@@ -21,7 +21,7 @@ static int kvm_s390_skeys_enabled(S390SKeysState *ss)
 
     r = skeyclass->get_skeys(ss, 0, 1, &single_key);
     if (r != 0 && r != KVM_S390_GET_SKEYS_NONE) {
-        error_report("S390_GET_KEYS error %d\n", r);
+        error_report("S390_GET_KEYS error %d", r);
     }
     return (r == 0);
 }
diff --git a/hw/s390x/s390-skeys.c b/hw/s390x/s390-skeys.c
index 539ef6d3a4..f2b732e300 100644
--- a/hw/s390x/s390-skeys.c
+++ b/hw/s390x/s390-skeys.c
@@ -100,8 +100,7 @@ void hmp_dump_skeys(Monitor *mon, const QDict *qdict)
 
     qmp_dump_skeys(filename, &err);
     if (err) {
-        monitor_printf(mon, "%s\n", error_get_pretty(err));
-        error_free(err);
+        error_report_err(err);
     }
 }
 
@@ -192,8 +191,8 @@ static int qemu_s390_skeys_set(S390SKeysState *ss, uint64_t start_gfn,
     /* Check for uint64 overflow and access beyond end of key data */
     if (start_gfn + count > skeydev->key_count || start_gfn + count < count) {
         error_report("Error: Setting storage keys for page beyond the end "
-                "of memory: gfn=%" PRIx64 " count=%" PRId64 "\n", start_gfn,
-                count);
+                     "of memory: gfn=%" PRIx64 " count=%" PRId64,
+                     start_gfn, count);
         return -EINVAL;
     }
 
@@ -212,8 +211,8 @@ static int qemu_s390_skeys_get(S390SKeysState *ss, uint64_t start_gfn,
     /* Check for uint64 overflow and access beyond end of key data */
     if (start_gfn + count > skeydev->key_count || start_gfn + count < count) {
         error_report("Error: Getting storage keys for page beyond the end "
-                "of memory: gfn=%" PRIx64 " count=%" PRId64 "\n", start_gfn,
-                count);
+                     "of memory: gfn=%" PRIx64 " count=%" PRId64,
+                     start_gfn, count);
         return -EINVAL;
     }
 
@@ -257,7 +256,7 @@ static void s390_storage_keys_save(QEMUFile *f, void *opaque)
 
     buf = g_try_malloc(S390_SKEYS_BUFFER_SIZE);
     if (!buf) {
-        error_report("storage key save could not allocate memory\n");
+        error_report("storage key save could not allocate memory");
         goto end_stream;
     }
 
@@ -277,7 +276,7 @@ static void s390_storage_keys_save(QEMUFile *f, void *opaque)
                  * use S390_SKEYS_SAVE_FLAG_ERROR to indicate failure to the
                  * reading side.
                  */
-                error_report("S390_GET_KEYS error %d\n", error);
+                error_report("S390_GET_KEYS error %d", error);
                 memset(buf, 0, S390_SKEYS_BUFFER_SIZE);
                 eos = S390_SKEYS_SAVE_FLAG_ERROR;
             }
@@ -315,7 +314,7 @@ static int s390_storage_keys_load(QEMUFile *f, void *opaque, int version_id)
             uint8_t *buf = g_try_malloc(S390_SKEYS_BUFFER_SIZE);
 
             if (!buf) {
-                error_report("storage key load could not allocate memory\n");
+                error_report("storage key load could not allocate memory");
                 ret = -ENOMEM;
                 break;
             }
@@ -327,7 +326,7 @@ static int s390_storage_keys_load(QEMUFile *f, void *opaque, int version_id)
 
                 ret = skeyclass->set_skeys(ss, cur_gfn, cur_count, buf);
                 if (ret < 0) {
-                    error_report("S390_SET_KEYS error %d\n", ret);
+                    error_report("S390_SET_KEYS error %d", ret);
                     break;
                 }
                 handled_count += cur_count;
diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c
index a061b49f19..74f2b40154 100644
--- a/hw/s390x/sclp.c
+++ b/hw/s390x/sclp.c
@@ -456,29 +456,26 @@ static void sclp_realize(DeviceState *dev, Error **errp)
 {
     MachineState *machine = MACHINE(qdev_get_machine());
     SCLPDevice *sclp = SCLP(dev);
-    Error *l_err = NULL;
+    Error *err = NULL;
     uint64_t hw_limit;
     int ret;
 
     object_property_set_bool(OBJECT(sclp->event_facility), true, "realized",
-                             &l_err);
-    if (l_err) {
-        goto error;
+                             &err);
+    if (err) {
+        goto out;
     }
 
     ret = s390_set_memory_limit(machine->maxram_size, &hw_limit);
     if (ret == -E2BIG) {
-        error_setg(&l_err, "qemu: host supports a maximum of %" PRIu64 " GB",
+        error_setg(&err, "qemu: host supports a maximum of %" PRIu64 " GB",
                    hw_limit >> 30);
-        goto error;
     } else if (ret) {
-        error_setg(&l_err, "qemu: setting the guest size failed");
-        goto error;
+        error_setg(&err, "qemu: setting the guest size failed");
     }
-    return;
-error:
-    assert(l_err);
-    error_propagate(errp, l_err);
+
+out:
+    error_propagate(errp, err);
 }
 
 static void sclp_memory_init(SCLPDevice *sclp)