[Qemu-devel] [PATCH v4 1/2] block: Pass errp in blkconf_geometry

[Fam Zheng]

This allows us to pass error information to caller.

Reviewed-by: Andreas Färber <address@hidden>
Reviewed-by: Stefan Hajnoczi <address@hidden>
Signed-off-by: Fam Zheng <address@hidden>
---
 hw/block/block.c         | 18 +++++++++---------
 hw/block/virtio-blk.c    |  7 +++----
 hw/ide/qdev.c            | 11 ++++++++---
 hw/scsi/scsi-disk.c      | 11 ++++++++---
 include/hw/block/block.h |  6 ++++--
 5 files changed, 32 insertions(+), 21 deletions(-)

diff --git a/hw/block/block.c b/hw/block/block.c
index 33dd3f3..b6a6dc6 100644
--- a/hw/block/block.c
+++ b/hw/block/block.c
@@ -22,8 +22,9 @@ void blkconf_serial(BlockConf *conf, char **serial)
     }
 }
 
-int blkconf_geometry(BlockConf *conf, int *ptrans,
-                     unsigned cyls_max, unsigned heads_max, unsigned secs_max)
+void blkconf_geometry(BlockConf *conf, int *ptrans,
+                      unsigned cyls_max, unsigned heads_max, unsigned secs_max,
+                      Error **errp)
 {
     DriveInfo *dinfo;
 
@@ -46,17 +47,16 @@ int blkconf_geometry(BlockConf *conf, int *ptrans,
     }
     if (conf->cyls || conf->heads || conf->secs) {
         if (conf->cyls < 1 || conf->cyls > cyls_max) {
-            error_report("cyls must be between 1 and %u", cyls_max);
-            return -1;
+            error_setg(errp, "cyls must be between 1 and %u", cyls_max);
+            return;
         }
         if (conf->heads < 1 || conf->heads > heads_max) {
-            error_report("heads must be between 1 and %u", heads_max);
-            return -1;
+            error_setg(errp, "heads must be between 1 and %u", heads_max);
+            return;
         }
         if (conf->secs < 1 || conf->secs > secs_max) {
-            error_report("secs must be between 1 and %u", secs_max);
-            return -1;
+            error_setg(errp, "secs must be between 1 and %u", secs_max);
+            return;
         }
     }
-    return 0;
 }
diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c
index c241c50..02106ce 100644
--- a/hw/block/virtio-blk.c
+++ b/hw/block/virtio-blk.c
@@ -728,9 +728,7 @@ static void virtio_blk_device_realize(DeviceState *dev, 
Error **errp)
     VirtIODevice *vdev = VIRTIO_DEVICE(dev);
     VirtIOBlock *s = VIRTIO_BLK(dev);
     VirtIOBlkConf *blk = &(s->blk);
-#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
     Error *err = NULL;
-#endif
     static int virtio_blk_id;
 
     if (!blk->conf.bs) {
@@ -744,8 +742,9 @@ static void virtio_blk_device_realize(DeviceState *dev, 
Error **errp)
 
     blkconf_serial(&blk->conf, &blk->serial);
     s->original_wce = bdrv_enable_write_cache(blk->conf.bs);
-    if (blkconf_geometry(&blk->conf, NULL, 65535, 255, 255) < 0) {
-        error_setg(errp, "Error setting geometry");
+    blkconf_geometry(&blk->conf, NULL, 65535, 255, 255, &err);
+    if (err) {
+        error_propagate(errp, err);
         return;
     }
 
diff --git a/hw/ide/qdev.c b/hw/ide/qdev.c
index 6e475e6..b4a4671 100644
--- a/hw/ide/qdev.c
+++ b/hw/ide/qdev.c
@@ -151,6 +151,7 @@ static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind)
 {
     IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus);
     IDEState *s = bus->ifs + dev->unit;
+    Error *err = NULL;
 
     if (dev->conf.discard_granularity == -1) {
         dev->conf.discard_granularity = 512;
@@ -161,9 +162,13 @@ static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind 
kind)
     }
 
     blkconf_serial(&dev->conf, &dev->serial);
-    if (kind != IDE_CD
-        && blkconf_geometry(&dev->conf, &dev->chs_trans, 65536, 16, 255) < 0) {
-        return -1;
+    if (kind != IDE_CD) {
+        blkconf_geometry(&dev->conf, &dev->chs_trans, 65536, 16, 255, &err);
+        if (err) {
+            error_report("%s", error_get_pretty(err));
+            error_free(err);
+            return -1;
+        }
     }
 
     if (ide_init_drive(s, dev->conf.bs, kind,
diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c
index d47ecd6..9010724 100644
--- a/hw/scsi/scsi-disk.c
+++ b/hw/scsi/scsi-disk.c
@@ -2237,6 +2237,7 @@ static void scsi_disk_unit_attention_reported(SCSIDevice 
*dev)
 static int scsi_initfn(SCSIDevice *dev)
 {
     SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
+    Error *err = NULL;
 
     if (!s->qdev.conf.bs) {
         error_report("drive property not set");
@@ -2250,9 +2251,13 @@ static int scsi_initfn(SCSIDevice *dev)
     }
 
     blkconf_serial(&s->qdev.conf, &s->serial);
-    if (dev->type == TYPE_DISK
-        && blkconf_geometry(&dev->conf, NULL, 65535, 255, 255) < 0) {
-        return -1;
+    if (dev->type == TYPE_DISK) {
+        blkconf_geometry(&dev->conf, NULL, 65535, 255, 255, &err);
+        if (err) {
+            error_report("%s", error_get_pretty(err));
+            error_free(err);
+            return -1;
+        }
     }
 
     if (s->qdev.conf.discard_granularity == -1) {
diff --git a/include/hw/block/block.h b/include/hw/block/block.h
index 7c3d6c8..3a01488 100644
--- a/include/hw/block/block.h
+++ b/include/hw/block/block.h
@@ -12,6 +12,7 @@
 #define HW_BLOCK_COMMON_H
 
 #include "qemu-common.h"
+#include "qapi/error.h"
 
 /* Configuration */
 
@@ -60,8 +61,9 @@ static inline unsigned int get_physical_block_exp(BlockConf 
*conf)
 /* Configuration helpers */
 
 void blkconf_serial(BlockConf *conf, char **serial);
-int blkconf_geometry(BlockConf *conf, int *trans,
-                     unsigned cyls_max, unsigned heads_max, unsigned secs_max);
+void blkconf_geometry(BlockConf *conf, int *trans,
+                      unsigned cyls_max, unsigned heads_max, unsigned secs_max,
+                      Error **errp);
 
 /* Hard disk geometry */
 
-- 
2.0.3