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Thu, 16 Apr 2020 19:20:42 -0500 Received: from DFLE102.ent.ti.com (10.64.6.23) by DFLE109.ent.ti.com (10.64.6.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3; Thu, 16 Apr 2020 19:20:42 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE102.ent.ti.com (10.64.6.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1847.3 via Frontend Transport; Thu, 16 Apr 2020 19:20:41 -0500 Received: from fllv0103.dal.design.ti.com (fllv0103.dal.design.ti.com [10.247.120.73]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 03H0KfbN020917; Thu, 16 Apr 2020 19:20:41 -0500 Received: from localhost ([10.250.70.56]) by fllv0103.dal.design.ti.com (8.14.7/8.14.7) with ESMTP id 03H0Kfkk060529; Thu, 16 Apr 2020 19:20:41 -0500 From: Suman Anna To: Bjorn Andersson , Mathieu Poirier Subject: [PATCH 2/2] remoteproc: Use a local copy for the name field Date: Thu, 16 Apr 2020 19:20:36 -0500 Message-ID: <20200417002036.24359-3-s-anna@ti.com> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200417002036.24359-1-s-anna@ti.com> References: <20200417002036.24359-1-s-anna@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200416_172053_188280_067EF385 X-CRM114-Status: GOOD ( 14.86 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Suman Anna , linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org The current name field used in the remoteproc structure is simply a pointer to a name field supplied during the rproc_alloc() call. The pointer passed in by remoteproc drivers during registration is typically a dev_name pointer, but it is possible that the pointer will no longer remain valid if the devices themselves were created at runtime like in the case of of_platform_populate(), and were deleted upon any failures within the respective remoteproc driver probe function. So, allocate and maintain a local copy for this name field to keep it agnostic of the logic used in the remoteproc drivers. Signed-off-by: Suman Anna --- v1: - Patch baselined on top of Mathieu's rproc_alloc() refactor series, and so addresses Bjorn's simplified cleanup comments - Switch to {kstrdup/kfree}_const variants v0: https://patchwork.kernel.org/patch/11456385/ drivers/remoteproc/remoteproc_core.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index e38f627059ac..3cebface3f26 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -1984,6 +1984,7 @@ static void rproc_type_release(struct device *dev) kfree(rproc->firmware); kfree(rproc->ops); + kfree_const(rproc->name); kfree(rproc); } @@ -2069,7 +2070,6 @@ struct rproc *rproc_alloc(struct device *dev, const char *name, if (!rproc) return NULL; - rproc->name = name; rproc->priv = &rproc[1]; rproc->auto_boot = true; rproc->elf_class = ELFCLASS32; @@ -2081,6 +2081,10 @@ struct rproc *rproc_alloc(struct device *dev, const char *name, rproc->dev.driver_data = rproc; idr_init(&rproc->notifyids); + rproc->name = kstrdup_const(name, GFP_KERNEL); + if (!rproc->name) + goto put_device; + if (rproc_alloc_firmware(rproc, name, firmware)) goto put_device; -- 2.26.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel