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hw/block/nvme: Fix a build error in nvme_get_feature()

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Current QEMU HEAD nvme.c does not compile with the default GCC 5.4
on a Ubuntu 16.04 host:

  hw/block/nvme.c:3242:9: error: ‘result’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
         trace_pci_nvme_getfeat_vwcache(result ? "enabled" : "disabled");
         ^
  hw/block/nvme.c:3150:14: note: ‘result’ was declared here
     uint32_t result;
              ^

Explicitly initialize the result to fix it.

Fixes: aa5e55e3b0 ("hw/block/nvme: open code for volatile write cache")
Fixes: Coverity CID 1446371
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
This commit is contained in:
Bin Meng 2021-02-10 19:22:21 +08:00 committed by Klaus Jensen
parent 886188a9c1
commit 2132cfe52b
1 changed files with 1 additions and 0 deletions
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hw/block/nvme.c
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@ -3228,6 +3228,7 @@ static uint16_t nvme_get_feature(NvmeCtrl *n, NvmeRequest *req)
result = ns->features.err_rec;
goto out;
case NVME_VOLATILE_WRITE_CACHE:
result = 0;
for (i = 1; i <= n->num_namespaces; i++) {
ns = nvme_ns(n, i);
if (!ns) {