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| author | Miroslav Rezanina <mrezanin@redhat.com> | 2021-03-15 11:13:52 +0100 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2021-03-15 15:47:18 +0100 |
| commit | 5793f5aafb05dae30e9dcb57d0d1c8f1a9633f6d (patch) | |
| tree | 6072ff45d66c89b82ac1044a596c749c15b88150 /hw/s390x/s390-pci-vfio.c | |
| parent | 1a3c443c43e81e32a05d6995039e0f356b8f60cb (diff) | |
| download | qemu-5793f5aafb05dae30e9dcb57d0d1c8f1a9633f6d.zip | |
s390x/pci: Add missing initialization for g_autofree variables
When declaring g_autofree variable without initialization, compiler
will raise "may be used uninitialized in this function" warning due
to automatic free handling.
This is mentioned in docs/devel/style.rst (quote from section
"Automatic memory deallocation"):
* Variables declared with g_auto* MUST always be initialized,
otherwise the cleanup function will use uninitialized stack memory
Add initialization for these declarations to prevent the warning and
comply with coding style.
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Fixes: cd7498d07fbb ("s390x/pci: Add routine to get the vfio dma available count")
Fixes: 1e7552ff5c34 ("s390x/pci: get zPCI function info from host")
Reviewed-by: Thomas Huth <thuth@redhat.com>
Tested-by: Matthew Rosato <mjrosato@linux.ibm.com>
Message-Id: <20210315101352.152888-1-mrezanin@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'hw/s390x/s390-pci-vfio.c')
| -rw-r--r-- | hw/s390x/s390-pci-vfio.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/hw/s390x/s390-pci-vfio.c b/hw/s390x/s390-pci-vfio.c index ead4f222d5..2a153fa8c9 100644 --- a/hw/s390x/s390-pci-vfio.c +++ b/hw/s390x/s390-pci-vfio.c @@ -29,14 +29,11 @@ */ bool s390_pci_update_dma_avail(int fd, unsigned int *avail) { - g_autofree struct vfio_iommu_type1_info *info; - uint32_t argsz; + uint32_t argsz = sizeof(struct vfio_iommu_type1_info); + g_autofree struct vfio_iommu_type1_info *info = g_malloc0(argsz); assert(avail); - argsz = sizeof(struct vfio_iommu_type1_info); - info = g_malloc0(argsz); - /* * If the specified argsz is not large enough to contain all capabilities * it will be updated upon return from the ioctl. Retry until we have @@ -230,7 +227,7 @@ static void s390_pci_read_pfip(S390PCIBusDevice *pbdev, */ void s390_pci_get_clp_info(S390PCIBusDevice *pbdev) { - g_autofree struct vfio_device_info *info; + g_autofree struct vfio_device_info *info = NULL; VFIOPCIDevice *vfio_pci; uint32_t argsz; int fd; |