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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id v17-20020a05600c471100b00412ee8e2f2asm19836337wmo.9.2024.03.12.11.38.13 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 Mar 2024 11:38:13 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PATCH 5/7] hw/nvram/mac_nvram: Report failure to write data Date: Tue, 12 Mar 2024 18:38:08 +0000 Message-Id: <20240312183810.557768-6-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240312183810.557768-1-peter.maydell@linaro.org> References: <20240312183810.557768-1-peter.maydell@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::332; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x332.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org There's no way for the macio_nvram device to report failure to write data, but we can at least report it to the user with error_report() as we do in other devices like xlnx-efuse. Spotted by Coverity. Resolves: Coverity CID 1507628 Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé --- hw/nvram/mac_nvram.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/hw/nvram/mac_nvram.c b/hw/nvram/mac_nvram.c index 5f9d16fb3e3..59277fbc776 100644 --- a/hw/nvram/mac_nvram.c +++ b/hw/nvram/mac_nvram.c @@ -48,7 +48,10 @@ static void macio_nvram_writeb(void *opaque, hwaddr addr, trace_macio_nvram_write(addr, value); s->data[addr] = value; if (s->blk) { - blk_pwrite(s->blk, addr, 1, &s->data[addr], 0); + if (blk_pwrite(s->blk, addr, 1, &s->data[addr], 0) < 0) { + error_report("%s: write of NVRAM data to backing store failed", + blk_name(s->blk)); + } } }