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Tue, 24 Aug 2021 10:17:19 -0700 Envelope-to: git@xilinx.com, peter.chen@kernel.org, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org Received: from [172.23.64.8] (port=48483 helo=xhdvnc108.xilinx.com) by smtp.xilinx.com with esmtp (Exim 4.90) (envelope-from ) id 1mIa34-00008Y-DA; Tue, 24 Aug 2021 10:17:18 -0700 Received: by xhdvnc108.xilinx.com (Postfix, from userid 16987) id B4F916053F; Tue, 24 Aug 2021 22:46:36 +0530 (IST) From: Manish Narani To: , , CC: , , , Piyush Mehta , Manish Narani Subject: [PATCH 4/6] usb: chipidea: Fix return value handling Date: Tue, 24 Aug 2021 22:46:16 +0530 Message-ID: <1629825378-8089-5-git-send-email-manish.narani@xilinx.com> X-Mailer: git-send-email 2.1.1 In-Reply-To: <1629825378-8089-1-git-send-email-manish.narani@xilinx.com> References: <1629825378-8089-1-git-send-email-manish.narani@xilinx.com> MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 1a9266e2-e869-4bfd-0ab0-08d967230d06 X-MS-TrafficTypeDiagnostic: CY4PR02MB3208: X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Oob-TLC-OOBClassifiers: OLM:632; 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X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Aug 2021 17:17:28.8742 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1a9266e2-e869-4bfd-0ab0-08d967230d06 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch01.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: DM3NAM02FT045.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR02MB3208 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Piyush Mehta API was neither captured nor checked.Fixed it by capturing the return value and then checking for any error. Addresses-Coverity: "Calling without checking return" Addresses-Coverity: "CHECKED_RETURN" Signed-off-by: Piyush Mehta Signed-off-by: Manish Narani --- drivers/usb/chipidea/core.c | 11 +++++++---- drivers/usb/chipidea/otg.c | 6 +++++- 2 files changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 2b18f50..676346f 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -700,13 +700,16 @@ static int ci_get_platdata(struct device *dev, if (usb_get_maximum_speed(dev) == USB_SPEED_FULL) platdata->flags |= CI_HDRC_FORCE_FULLSPEED; - of_property_read_u32(dev->of_node, "phy-clkgate-delay-us", - &platdata->phy_clkgate_delay_us); + if (of_property_read_u32(dev->of_node, "phy-clkgate-delay-us", + &platdata->phy_clkgate_delay_us)) + dev_dbg(dev, "Missing phy-clkgate-delay-us property\n"); platdata->itc_setting = 1; - of_property_read_u32(dev->of_node, "itc-setting", - &platdata->itc_setting); + if (of_property_read_u32(dev->of_node, "itc-setting", + &platdata->itc_setting)) + dev_dbg(dev, "Missing itc-setting property\n"); + ret = of_property_read_u32(dev->of_node, "ahb-burst-config", &platdata->ahb_burst_config); diff --git a/drivers/usb/chipidea/otg.c b/drivers/usb/chipidea/otg.c index 8dd5928..d527d9d 100644 --- a/drivers/usb/chipidea/otg.c +++ b/drivers/usb/chipidea/otg.c @@ -168,6 +168,7 @@ static int hw_wait_vbus_lower_bsv(struct ci_hdrc *ci) static void ci_handle_id_switch(struct ci_hdrc *ci) { enum ci_role role = ci_otg_role(ci); + int ret; if (role != ci->role) { dev_dbg(ci->dev, "switching from %s to %s\n", @@ -193,7 +194,10 @@ static void ci_handle_id_switch(struct ci_hdrc *ci) */ hw_wait_vbus_lower_bsv(ci); - ci_role_start(ci, role); + ret = ci_role_start(ci, role); + if (ret < 0) + dev_dbg(ci->dev, "switching err %d\n", ret); + /* vbus change may have already occurred */ if (role == CI_ROLE_GADGET) ci_handle_vbus_change(ci); -- 2.1.1