From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 04 Aug 2025 17:32:10 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1uixAY-006z7N-2G for lore@lore.pengutronix.de; Mon, 04 Aug 2025 17:32:10 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1uixAV-0006G5-RB for lore@pengutronix.de; Mon, 04 Aug 2025 17:32:10 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=vOLggSi0IO5o401Qz0WMc9dE5r1cgo1hZRe93gRKr3g=; b=BJI654/oSQr1Q1Gnjr0PcY5ykg CLC6trsvCWB0g+hZ3cTGYE52+UihF7Qy6YyzzpYHMLY+6DT9dv37WApbjZwKPq5i/t9SLkx3Z+kvP iqPljToyet3nJgYbEbt5VM1P77VbGHYqxptWhqM1LSN/0v0MW8ShVdQS/znxWC6Ra4tOCGlRwwKzX ZIukfXccMpnwcY32RKtY6oB8VCeC3ZnhP32NfKTjE3amWghMA5wzV/C2rqJWbJZLerXKcZGia2jce srp7/2iO/gKYM9AVUn//j5oSmnoHj4FDOZ0A6NK/esmO8VWKCTNNyyYmaifD4ocwRMHTrXkacg5TJ r4c6IMBQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uix9i-0000000AnrN-0Xjh; Mon, 04 Aug 2025 15:31:18 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uiwJ2-0000000AgmD-0vfE for barebox@lists.infradead.org; Mon, 04 Aug 2025 14:36:53 +0000 Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1uiwIz-0000aW-9d; Mon, 04 Aug 2025 16:36:49 +0200 From: Marco Felsch Date: Mon, 04 Aug 2025 16:36:50 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250804-v2025-06-0-topic-nvmem-v1-4-7603eaa4d2b0@pengutronix.de> References: <20250804-v2025-06-0-topic-nvmem-v1-0-7603eaa4d2b0@pengutronix.de> In-Reply-To: <20250804-v2025-06-0-topic-nvmem-v1-0-7603eaa4d2b0@pengutronix.de> To: Sascha Hauer , BAREBOX Cc: Marco Felsch X-Mailer: b4 0.14.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250804_073652_264153_07E81B94 X-CRM114-Status: UNSURE ( 9.84 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.2 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 04/15] nvmem: core: fix nvmem_register error path X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) The nvmem->dev device is still registered even if nvmem_register_cdev() fails and the 'nvmem' memory was freed. Fix this by unregister the device first before freeing the memory. Signed-off-by: Marco Felsch --- drivers/nvmem/core.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c index 7acd26474b503a6a6f8c6297c7c36a3a1990105a..562d25ef1fd6cc06c8308cc342d1d1f83edc1585 100644 --- a/drivers/nvmem/core.c +++ b/drivers/nvmem/core.c @@ -228,15 +228,19 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config) if (!config->cdev) { rval = nvmem_register_cdev(nvmem, config->name); - if (rval) { - kfree(nvmem); - return ERR_PTR(rval); - } + if (rval) + goto err_unregister; } list_add_tail(&nvmem->node, &nvmem_devs); return nvmem; + +err_unregister: + unregister_device(&nvmem->dev); + kfree(nvmem); + + return ERR_PTR(rval); } EXPORT_SYMBOL_GPL(nvmem_register); -- 2.39.5