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Thu, 11 Feb 2021 07:52:20 -0500 (EST) From: Klaus Jensen To: qemu-devel@nongnu.org, Peter Maydell Subject: [PULL 2/2] hw/block/nvme: Fix a build error in nvme_get_feature() Date: Thu, 11 Feb 2021 13:52:15 +0100 Message-Id: <20210211125215.985593-3-its@irrelevant.dk> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210211125215.985593-1-its@irrelevant.dk> References: <20210211125215.985593-1-its@irrelevant.dk> MIME-Version: 1.0 Received-SPF: pass client-ip=66.111.4.26; envelope-from=its@irrelevant.dk; helo=out2-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , qemu-block@nongnu.org, Klaus Jensen , Bin Meng , Max Reitz , Keith Busch , Klaus Jensen Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Bin Meng 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: aa5e55e3b07e ("hw/block/nvme: open code for volatile write cache") Signed-off-by: Bin Meng Signed-off-by: Klaus Jensen --- hw/block/nvme.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/block/nvme.c b/hw/block/nvme.c index d36e14fe13e2..31295e5eeb84 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -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) {