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softmmu/physmem: Silence GCC 10 maybe-uninitialized error 

When building with GCC 10.2 configured with --extra-cflags=-Os, we get:

  softmmu/physmem.c: In function 'address_space_translate_for_iotlb':
  softmmu/physmem.c:643:26: error: 'notifier' may be used uninitialized in this function [-Werror=maybe-uninitialized]
    643 |         notifier->active = true;
        |                          ^
  softmmu/physmem.c:608:23: note: 'notifier' was declared here
    608 |     TCGIOMMUNotifier *notifier;
        |                       ^~~~~~~~

Initialize 'notifier' to silence the warning.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210117170411.4106949-1-f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
stable-6.0
Philippe Mathieu-Daudé 2021-01-17 18:04:11 +01:00 committed by Paolo Bonzini
parent acd15fc2e8
commit bbf9019141
1 changed files with 1 additions and 1 deletions
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softmmu/physmem.c
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@ -605,7 +605,7 @@ static void tcg_register_iommu_notifier(CPUState *cpu,
* when the IOMMU tells us the mappings we've cached have changed.
*/
MemoryRegion *mr = MEMORY_REGION(iommu_mr);
TCGIOMMUNotifier *notifier;
TCGIOMMUNotifier *notifier = NULL;
int i;
for (i = 0; i < cpu->iommu_notifiers->len; i++) {