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[114.34.229.221]) by smtp.gmail.com with ESMTPSA id t74sm1844538pfc.47.2020.11.04.01.29.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Nov 2020 01:29:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id; bh=8/HnNQ+Hct9/GYNAHvbQpH4erQfEQzRnohmVV7pNij0=; b=bpsZChMz/g/NR7nKDng+HS/pl6Ox0rJ3HheOHoHLPqCCHy3j61vzig5fyKVBWL5Saa z0rXN32KbfoTkk0lvmB2NjJBCWIzwHxi4MySqtTH1kinO25Kqa5VAuTogabmg6z4Li3D +SPb6c1Q0gUG65f1ikZLAwbsFarSzlDcTJdiiC1b+7sGTZFPMYYVW0slZh/dFyX3G9kl hg9SMWDdjVeQ4aIDyeQN8bi3EeMgBxzpmxZUktIiXRSR3+rY9c/fLKJjpA2DrK6+f2N1 iYEG9GNn0fiX8mX7eBWMLPQqwKC2/Ny7Brl0NodoNLSl6XuQNv7QH0r9D3yLFditY9qV gUgg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=8/HnNQ+Hct9/GYNAHvbQpH4erQfEQzRnohmVV7pNij0=; b=m37Ajckp7eazcnAfnxTe69YC49HFieQHkMTlTQc5i8CxMEJrdUWwqrc23oaJKleM1j aVtOdwk+cKwcGtARsRJitJ2gYutcIKPWTTxsMcvWqaffYrtQTmJffPEF4mNkXrXS/+uV nk17CFM8NoySiyte5EfVwZ8Mns/U1hsAwedX+quamIbjAme+O5R3KZmW3MPLwDwSrZUs rICCEv5n/HUbk8dnKibcsBoD6boimelCMPeWaVqdCUwGOaUNM9T7tjFkd+uTBHwwSeXF Z5p7Fwx0h3Q7qvqEdpiN0GKhsLxi1Hzk10YNqTkC8qO4webQ1zuQLLd78bt7WCF+Iuf3 39tw== X-Gm-Message-State: AOAM533t4ni975aG5/V34LHj0AMUu18k4eXOqkhGfFJ5EcEhuun+sGZN t6r+RCDfvQqOHh6kTLGMvkWmEZF/mzQsCA== X-Google-Smtp-Source: ABdhPJx402myKz5GfNcs75lSPCYoeYjRxpWnqPdGuXYxEvRVuLLiXfc1ns+leuUyhCUnmqW2jqaVfg== X-Received: by 2002:a63:4c45:: with SMTP id m5mr4007206pgl.201.1604482163753; Wed, 04 Nov 2020 01:29:23 -0800 (PST) From: Green Wan To: Subject: [PATCH] hw/misc/sifive_u_otp: handling the fails of blk_pread and blk_pwrite Date: Wed, 4 Nov 2020 17:29:00 +0800 Message-Id: <20201104092900.21214-1-green.wan@sifive.com> X-Mailer: git-send-email 2.17.1 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::544; envelope-from=green.wan@sifive.com; helo=mail-pg1-x544.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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 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: alistair23@gmail.com, bmeng.cn@gmail.com, qemu-devel@nongnu.org, green.wan@sifive.com, peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Fix code coverage issues by checking return value and handling fail case of blk_pread() and blk_pwrite(). Return default value 0xff if read fails. Signed-off-by: Green Wan Reviewed-by: Alistair Francis --- hw/misc/sifive_u_otp.c | 31 +++++++++++++++++++++++-------- 1 file changed, 23 insertions(+), 8 deletions(-) diff --git a/hw/misc/sifive_u_otp.c b/hw/misc/sifive_u_otp.c index 60066375ab..4314727d0d 100644 --- a/hw/misc/sifive_u_otp.c +++ b/hw/misc/sifive_u_otp.c @@ -62,8 +62,13 @@ static uint64_t sifive_u_otp_read(void *opaque, hwaddr a= ddr, unsigned int size) if (s->blk) { int32_t buf; =20 - blk_pread(s->blk, s->pa * SIFIVE_U_OTP_FUSE_WORD, &buf, - SIFIVE_U_OTP_FUSE_WORD); + if (blk_pread(s->blk, s->pa * SIFIVE_U_OTP_FUSE_WORD, &buf, + SIFIVE_U_OTP_FUSE_WORD) < 0) { + qemu_log_mask(LOG_GUEST_ERROR, + "read error index<%d>\n", s->pa); + return 0xff; + } + return buf; } =20 @@ -160,8 +165,12 @@ static void sifive_u_otp_write(void *opaque, hwaddr ad= dr, =20 /* write to backend */ if (s->blk) { - blk_pwrite(s->blk, s->pa * SIFIVE_U_OTP_FUSE_WORD, - &s->fuse[s->pa], SIFIVE_U_OTP_FUSE_WORD, 0); + if (blk_pwrite(s->blk, s->pa * SIFIVE_U_OTP_FUSE_WORD, + &s->fuse[s->pa], SIFIVE_U_OTP_FUSE_WORD, + 0) < 0) { + qemu_log_mask(LOG_GUEST_ERROR, + "write error index<%d>\n", s->pa); + } } =20 /* update written bit */ @@ -248,12 +257,18 @@ static void sifive_u_otp_reset(DeviceState *dev) int index =3D SIFIVE_U_OTP_SERIAL_ADDR; =20 serial_data =3D s->serial; - blk_pwrite(s->blk, index * SIFIVE_U_OTP_FUSE_WORD, - &serial_data, SIFIVE_U_OTP_FUSE_WORD, 0); + if (blk_pwrite(s->blk, index * SIFIVE_U_OTP_FUSE_WORD, + &serial_data, SIFIVE_U_OTP_FUSE_WORD, 0) < 0) { + qemu_log_mask(LOG_GUEST_ERROR, + "write error index<%d>\n", index); + } =20 serial_data =3D ~(s->serial); - blk_pwrite(s->blk, (index + 1) * SIFIVE_U_OTP_FUSE_WORD, - &serial_data, SIFIVE_U_OTP_FUSE_WORD, 0); + if (blk_pwrite(s->blk, (index + 1) * SIFIVE_U_OTP_FUSE_WORD, + &serial_data, SIFIVE_U_OTP_FUSE_WORD, 0) < 0) { + qemu_log_mask(LOG_GUEST_ERROR, + "write error index<%d>\n", index + 1); + } } =20 /* Initialize write-once map */ --=20 2.17.1