[PATCH v4 18/31] VFIO: Fix error_append_hint/error_prepend usage

[Vladimir Sementsov-Ogievskiy]

If we want to add some info to errp (by error_prepend() or
error_append_hint()), we must use the ERRP_AUTO_PROPAGATE macro.
Otherwise, this info will not be added when errp == &fatal_err
(the program will exit prior to the error_append_hint() or
error_prepend() call).  Fix such cases.

This commit (together with its neighbors) was generated by

git grep -l 'error_\(append_hint\|prepend\)(errp' | while read f; do \
spatch --sp-file scripts/coccinelle/fix-error-add-info.cocci \
--in-place $f; done

and then

./python/commit-per-subsystem.py MAINTAINERS "$(< auto-msg)"

(auto-msg was a file with this commit message)

and then by hand, for not maintained changed files:

git commit -m "<SUB-SYSTEM>: $(< auto-msg)" <FILES>

Still, for backporting it may be more comfortable to use only the first
command and then do one huge commit.

Reported-by: Greg Kurz <address@hidden>
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---
 hw/vfio/common.c     | 3 +++
 hw/vfio/pci-quirks.c | 1 +
 hw/vfio/pci.c        | 3 +++
 hw/vfio/platform.c   | 1 +
 4 files changed, 8 insertions(+)

diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 3e03c495d8..b0f3f64f5d 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -136,6 +136,7 @@ static const char *index_to_str(VFIODevice *vbasedev, int 
index)
 int vfio_set_irq_signaling(VFIODevice *vbasedev, int index, int subindex,
                            int action, int fd, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     struct vfio_irq_set *irq_set;
     int argsz, ret = 0;
     const char *name;
@@ -1437,6 +1438,7 @@ static void vfio_disconnect_container(VFIOGroup *group)
 
 VFIOGroup *vfio_get_group(int groupid, AddressSpace *as, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     VFIOGroup *group;
     char path[32];
     struct vfio_group_status status = { .argsz = sizeof(status) };
@@ -1526,6 +1528,7 @@ void vfio_put_group(VFIOGroup *group)
 int vfio_get_device(VFIOGroup *group, const char *name,
                     VFIODevice *vbasedev, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     struct vfio_device_info dev_info = { .argsz = sizeof(dev_info) };
     int ret, fd;
 
diff --git a/hw/vfio/pci-quirks.c b/hw/vfio/pci-quirks.c
index 136f3a9ad6..d8b6ef7021 100644
--- a/hw/vfio/pci-quirks.c
+++ b/hw/vfio/pci-quirks.c
@@ -2139,6 +2139,7 @@ const PropertyInfo qdev_prop_nv_gpudirect_clique = {
 
 static int vfio_add_nv_gpudirect_cap(VFIOPCIDevice *vdev, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     PCIDevice *pdev = &vdev->pdev;
     int ret, pos = 0xC8;
 
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index c5e6fe61cb..4b537bce2c 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -1916,6 +1916,7 @@ static void vfio_check_af_flr(VFIOPCIDevice *vdev, 
uint8_t pos)
 
 static int vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t pos, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     PCIDevice *pdev = &vdev->pdev;
     uint8_t cap_id, next, size;
     int ret;
@@ -2469,6 +2470,7 @@ int vfio_populate_vga(VFIOPCIDevice *vdev, Error **errp)
 
 static void vfio_populate_device(VFIOPCIDevice *vdev, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     VFIODevice *vbasedev = &vdev->vbasedev;
     struct vfio_region_info *reg_info;
     struct vfio_irq_info irq_info = { .argsz = sizeof(irq_info) };
@@ -2700,6 +2702,7 @@ static void vfio_unregister_req_notifier(VFIOPCIDevice 
*vdev)
 
 static void vfio_realize(PCIDevice *pdev, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     VFIOPCIDevice *vdev = PCI_VFIO(pdev);
     VFIODevice *vbasedev_iter;
     VFIOGroup *group;
diff --git a/hw/vfio/platform.c b/hw/vfio/platform.c
index d7598c6152..236e5f8f57 100644
--- a/hw/vfio/platform.c
+++ b/hw/vfio/platform.c
@@ -617,6 +617,7 @@ static int vfio_base_device_init(VFIODevice *vbasedev, 
Error **errp)
  */
 static void vfio_platform_realize(DeviceState *dev, Error **errp)
 {
+    ERRP_AUTO_PROPAGATE();
     VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(dev);
     SysBusDevice *sbdev = SYS_BUS_DEVICE(dev);
     VFIODevice *vbasedev = &vdev->vbasedev;
-- 
2.21.0