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[88.21.68.214]) by smtp.gmail.com with ESMTPSA id z11sm23103477wrw.93.2020.08.03.03.56.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Aug 2020 03:56:54 -0700 (PDT) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH-for-5.1? 4/4] hw/qdev-clock: Avoid calling qdev_connect_clock_in after DeviceRealize Date: Mon, 3 Aug 2020 12:56:47 +0200 Message-Id: <20200803105647.22223-5-f4bug@amsat.org> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20200803105647.22223-1-f4bug@amsat.org> References: <20200803105647.22223-1-f4bug@amsat.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::335; envelope-from=philippe.mathieu.daude@gmail.com; helo=mail-wm1-x335.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: 0 X-Spam_score: 0.0 X-Spam_bar: / X-Spam_report: (0.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=1, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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: Damien Hedde , Peter Maydell , =?utf-8?q?Daniel_P=2E_Berrang?= =?utf-8?q?=C3=A9?= , Eduardo Habkost , Alistair Francis , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , qemu-arm@nongnu.org, "Edgar E. Iglesias" , Paolo Bonzini Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Clock canonical name is set in device_set_realized (see the block added to hw/core/qdev.c in commit 0e6934f264). If we connect a clock after the device is realized, this code is not executed. This is currently not a problem as this name is only used for trace events, however this disrupt tracing. Add a comment to document qdev_connect_clock_in() must be called before the device is realized, and assert this condition. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Alistair Francis --- include/hw/qdev-clock.h | 2 ++ hw/core/qdev-clock.c | 1 + 2 files changed, 3 insertions(+) diff --git a/include/hw/qdev-clock.h b/include/hw/qdev-clock.h index a897f7c9d0..64ca4d266f 100644 --- a/include/hw/qdev-clock.h +++ b/include/hw/qdev-clock.h @@ -70,6 +70,8 @@ Clock *qdev_get_clock_out(DeviceState *dev, const char *name); * * Set the source clock of input clock @name of device @dev to @source. * @source period update will be propagated to @name clock. + * + * Must be called before @dev is realized. */ void qdev_connect_clock_in(DeviceState *dev, const char *name, Clock *source); diff --git a/hw/core/qdev-clock.c b/hw/core/qdev-clock.c index f139b68b88..47ecb5b4fa 100644 --- a/hw/core/qdev-clock.c +++ b/hw/core/qdev-clock.c @@ -186,5 +186,6 @@ Clock *qdev_alias_clock(DeviceState *dev, const char *name, void qdev_connect_clock_in(DeviceState *dev, const char *name, Clock *source) { + assert(!dev->realized); clock_set_source(qdev_get_clock_in(dev, name), source); }