Misc HW patches for 2024-04-02

[PULL 12/15] hw/nvme: fix -Werror=maybe-uninitialized

Philippe Mathieu-Daudé posted 15 patches 1 year, 10 months ago

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Maintainers: Richard Henderson <richard.henderson@linaro.org>, Paolo Bonzini <pbonzini@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, Fam Zheng <fam@euphon.net>, Kevin Wolf <kwolf@redhat.com>, Hanna Reitz <hreitz@redhat.com>, "Alex Bennée" <alex.bennee@linaro.org>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Eric Auger <eric.auger@redhat.com>, Peter Maydell <peter.maydell@linaro.org>, David Woodhouse <dwmw2@infradead.org>, Paul Durrant <paul@xen.org>, "Michael S. Tsirkin" <mst@redhat.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Eduardo Habkost <eduardo@habkost.net>, Jason Wang <jasowang@redhat.com>, Keith Busch <kbusch@kernel.org>, Klaus Jensen <its@irrelevant.dk>, Jesper Devantier <foss@defmacro.it>, Alexandre Iooss <erdnaxe@crans.org>, Mahmoud Mandour <ma.mandourr@gmail.com>, Pierrick Bouvier <pierrick.bouvier@linaro.org>, Alexander Graf <agraf@csgraf.de>, Cameron Esfahani <dirty@apple.com>, Roman Bolshakov <rbolshakov@ddn.com>, Nicholas Piggin <npiggin@gmail.com>, Daniel Henrique Barboza <danielhb413@gmail.com>, John Snow <jsnow@redhat.com>, Thomas Huth <thuth@redhat.com>, Laurent Vivier <lvivier@redhat.com>

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[PULL 12/15] hw/nvme: fix -Werror=maybe-uninitialized

Posted by Philippe Mathieu-Daudé 1 year, 10 months ago

From: Marc-André Lureau <marcandre.lureau@redhat.com>

../hw/nvme/ctrl.c:6081:21: error: ‘result’ may be used uninitialized [-Werror=maybe-uninitialized]

It's not obvious that 'result' is set in all code paths. When &result is
a returned argument, it's even less clear.

Looking at various assignments, 0 seems to be a suitable default value.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Message-ID: <20240328102052.3499331-18-marcandre.lureau@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 hw/nvme/ctrl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c
index c2b17de987..127c3d2383 100644
--- a/hw/nvme/ctrl.c
+++ b/hw/nvme/ctrl.c
@@ -5894,7 +5894,7 @@ static uint16_t nvme_get_feature(NvmeCtrl *n, NvmeRequest *req)
     uint32_t dw10 = le32_to_cpu(cmd->cdw10);
     uint32_t dw11 = le32_to_cpu(cmd->cdw11);
     uint32_t nsid = le32_to_cpu(cmd->nsid);
-    uint32_t result;
+    uint32_t result = 0;
     uint8_t fid = NVME_GETSETFEAT_FID(dw10);
     NvmeGetFeatureSelect sel = NVME_GETFEAT_SELECT(dw10);
     uint16_t iv;
-- 
2.41.0