diff options
| author | Cao jin <caoj.fnst@cn.fujitsu.com> | 2016-06-20 14:13:39 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-07-05 13:14:41 +0300 |
| commit | 1108b2f8a939fb5778d384149e2f1b99062a72da (patch) | |
| tree | 0b53cef98d45fdd66c95053a110ada727a743c1b /hw/vfio | |
| parent | 69b205bb0b9ecf65b0ded7b9219ef9a58ef322ad (diff) | |
| download | qemu-1108b2f8a939fb5778d384149e2f1b99062a72da.tar.gz | |
pci: Convert msi_init() to Error and fix callers to check it
msi_init() reports errors with error_report(), which is wrong
when it's used in realize().
Fix by converting it to Error.
Fix its callers to handle failure instead of ignoring it.
For those callers who don't handle the failure, it might happen:
when user want msi on, but he doesn't get what he want because of
msi_init fails silently.
cc: Gerd Hoffmann <kraxel@redhat.com>
cc: John Snow <jsnow@redhat.com>
cc: Dmitry Fleytman <dmitry@daynix.com>
cc: Jason Wang <jasowang@redhat.com>
cc: Michael S. Tsirkin <mst@redhat.com>
cc: Hannes Reinecke <hare@suse.de>
cc: Paolo Bonzini <pbonzini@redhat.com>
cc: Alex Williamson <alex.williamson@redhat.com>
cc: Markus Armbruster <armbru@redhat.com>
cc: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Diffstat (limited to 'hw/vfio')
| -rw-r--r-- | hw/vfio/pci.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index f2c679e47c..44783c50ab 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -31,6 +31,7 @@ #include "sysemu/sysemu.h" #include "pci.h" #include "trace.h" +#include "qapi/error.h" #define MSIX_CAP_LENGTH 12 @@ -1170,6 +1171,7 @@ static int vfio_msi_setup(VFIOPCIDevice *vdev, int pos) uint16_t ctrl; bool msi_64bit, msi_maskbit; int ret, entries; + Error *err = NULL; if (pread(vdev->vbasedev.fd, &ctrl, sizeof(ctrl), vdev->config_offset + pos + PCI_CAP_FLAGS) != sizeof(ctrl)) { @@ -1183,12 +1185,13 @@ static int vfio_msi_setup(VFIOPCIDevice *vdev, int pos) trace_vfio_msi_setup(vdev->vbasedev.name, pos); - ret = msi_init(&vdev->pdev, pos, entries, msi_64bit, msi_maskbit); + ret = msi_init(&vdev->pdev, pos, entries, msi_64bit, msi_maskbit, &err); if (ret < 0) { if (ret == -ENOTSUP) { return 0; } - error_report("vfio: msi_init failed"); + error_prepend(&err, "vfio: msi_init failed: "); + error_report_err(err); return ret; } vdev->msi_cap_size = 0xa + (msi_maskbit ? 0xa : 0) + (msi_64bit ? 0x4 : 0); |