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Mon, 19 Apr 2021 06:36:41 -0700 (PDT) Sender: Guenter Roeck Subject: Re: [RFC v1 PATCH 3/3] driver: update all the code that use soc_device_match To: "Alice Guo (OSS)" , gregkh@linuxfoundation.org, rafael@kernel.org, horia.geanta@nxp.com, aymen.sghaier@nxp.com, herbert@gondor.apana.org.au, davem@davemloft.net, tony@atomide.com, geert+renesas@glider.be, mturquette@baylibre.com, sboyd@kernel.org, vkoul@kernel.org, peter.ujfalusi@gmail.com, a.hajda@samsung.com, narmstrong@baylibre.com, robert.foss@linaro.org, airlied@linux.ie, daniel@ffwll.ch, khilman@baylibre.com, tomba@kernel.org, jyri.sarha@iki.fi, joro@8bytes.org, will@kernel.org, mchehab@kernel.org, ulf.hansson@linaro.org, adrian.hunter@intel.com, kishon@ti.com, kuba@kernel.org, linus.walleij@linaro.org, Roy.Pledge@nxp.com, leoyang.li@nxp.com, ssantosh@kernel.org, matthias.bgg@gmail.com, edubezval@gmail.com, j-keerthy@ti.com, balbi@kernel.org, linux@prisktech.co.nz, stern@rowland.harvard.edu, wim@linux-watchdog.org Cc: linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, dmaengine@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, netdev@vger.kernel.org, linux-phy@lists.infradead.org, linux-gpio@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-staging@lists.linux.dev, linux-mediatek@lists.infradead.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-watchdog@vger.kernel.org References: <20210419042722.27554-1-alice.guo@oss.nxp.com> <20210419042722.27554-4-alice.guo@oss.nxp.com> From: Guenter Roeck Autocrypt: addr=linux@roeck-us.net; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: <20210419042722.27554-4-alice.guo@oss.nxp.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit On 4/18/21 9:27 PM, Alice Guo (OSS) wrote: > From: Alice Guo > > Update all the code that use soc_device_match because add support for > soc_device_match returning -EPROBE_DEFER. > > Signed-off-by: Alice Guo > --- [ ... ] > drivers/watchdog/renesas_wdt.c | 2 +- > 48 files changed, 131 insertions(+), 52 deletions(-) > [ ... ] > diff --git a/drivers/watchdog/renesas_wdt.c b/drivers/watchdog/renesas_wdt.c > index 5791198960e6..fdc534dc4024 100644 > --- a/drivers/watchdog/renesas_wdt.c > +++ b/drivers/watchdog/renesas_wdt.c > @@ -197,7 +197,7 @@ static bool rwdt_blacklisted(struct device *dev) > const struct soc_device_attribute *attr; > > attr = soc_device_match(rwdt_quirks_match); > - if (attr && setup_max_cpus > (uintptr_t)attr->data) { > + if (!IS_ERR(attr) && attr && setup_max_cpus > (uintptr_t)attr->data) { This is wrong. We can not make the decision below without having access to attr. The function may wrongly return false if soc_device_match() returns an error. 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210419042722.27554-4-alice.guo@oss.nxp.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Tue, 20 Apr 2021 07:56:16 +1000 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-usb@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-gpio@vger.kernel.org, netdev@vger.kernel.org, linux-pm@vger.kernel.org, linux-staging@lists.linux.dev, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-renesas-soc@vger.kernel.org, linux-phy@lists.infradead.org, iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, linux-crypto@vger.kernel.org, dmaengine@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-omap@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 4/18/21 9:27 PM, Alice Guo (OSS) wrote: > From: Alice Guo > > Update all the code that use soc_device_match because add support for > soc_device_match returning -EPROBE_DEFER. > > Signed-off-by: Alice Guo > --- [ ... ] > drivers/watchdog/renesas_wdt.c | 2 +- > 48 files changed, 131 insertions(+), 52 deletions(-) > [ ... ] > diff --git a/drivers/watchdog/renesas_wdt.c b/drivers/watchdog/renesas_wdt.c > index 5791198960e6..fdc534dc4024 100644 > --- a/drivers/watchdog/renesas_wdt.c > +++ b/drivers/watchdog/renesas_wdt.c > @@ -197,7 +197,7 @@ static bool rwdt_blacklisted(struct device *dev) > const struct soc_device_attribute *attr; > > attr = soc_device_match(rwdt_quirks_match); > - if (attr && setup_max_cpus > (uintptr_t)attr->data) { > + if (!IS_ERR(attr) && attr && setup_max_cpus > (uintptr_t)attr->data) { This is wrong. We can not make the decision below without having access to attr. The function may wrongly return false if soc_device_match() returns an error. Guenter > dev_info(dev, "Watchdog blacklisted on %s %s\n", attr->soc_id, > attr->revision); > return true; > From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0AB10C433ED for ; Mon, 19 Apr 2021 13:36:51 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9C30361245 for ; Mon, 19 Apr 2021 13:36:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9C30361245 Authentication-Results: mail.kernel.org; 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Mon, 19 Apr 2021 06:36:42 -0700 (PDT) Received: from server.roeck-us.net ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id p22sm3563941otf.25.2021.04.19.06.36.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 19 Apr 2021 06:36:41 -0700 (PDT) Subject: Re: [RFC v1 PATCH 3/3] driver: update all the code that use soc_device_match To: "Alice Guo (OSS)" , gregkh@linuxfoundation.org, rafael@kernel.org, horia.geanta@nxp.com, aymen.sghaier@nxp.com, herbert@gondor.apana.org.au, davem@davemloft.net, tony@atomide.com, geert+renesas@glider.be, mturquette@baylibre.com, sboyd@kernel.org, vkoul@kernel.org, peter.ujfalusi@gmail.com, a.hajda@samsung.com, narmstrong@baylibre.com, robert.foss@linaro.org, airlied@linux.ie, daniel@ffwll.ch, khilman@baylibre.com, tomba@kernel.org, jyri.sarha@iki.fi, joro@8bytes.org, will@kernel.org, mchehab@kernel.org, ulf.hansson@linaro.org, adrian.hunter@intel.com, kishon@ti.com, kuba@kernel.org, linus.walleij@linaro.org, Roy.Pledge@nxp.com, leoyang.li@nxp.com, ssantosh@kernel.org, matthias.bgg@gmail.com, edubezval@gmail.com, j-keerthy@ti.com, balbi@kernel.org, linux@prisktech.co.nz, stern@rowland.harvard.edu, wim@linux-watchdog.org References: <20210419042722.27554-1-alice.guo@oss.nxp.com> <20210419042722.27554-4-alice.guo@oss.nxp.com> From: Guenter Roeck Autocrypt: addr=linux@roeck-us.net; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210419042722.27554-4-alice.guo@oss.nxp.com> Content-Language: en-US Cc: linux-usb@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-gpio@vger.kernel.org, netdev@vger.kernel.org, linux-pm@vger.kernel.org, linux-staging@lists.linux.dev, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-renesas-soc@vger.kernel.org, linux-phy@lists.infradead.org, iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, linux-crypto@vger.kernel.org, dmaengine@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-omap@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On 4/18/21 9:27 PM, Alice Guo (OSS) wrote: > From: Alice Guo > > Update all the code that use soc_device_match because add support for > soc_device_match returning -EPROBE_DEFER. > > Signed-off-by: Alice Guo > --- [ ... ] > drivers/watchdog/renesas_wdt.c | 2 +- > 48 files changed, 131 insertions(+), 52 deletions(-) > [ ... ] > diff --git a/drivers/watchdog/renesas_wdt.c b/drivers/watchdog/renesas_wdt.c > index 5791198960e6..fdc534dc4024 100644 > --- a/drivers/watchdog/renesas_wdt.c > +++ b/drivers/watchdog/renesas_wdt.c > @@ -197,7 +197,7 @@ static bool rwdt_blacklisted(struct device *dev) > const struct soc_device_attribute *attr; > > attr = soc_device_match(rwdt_quirks_match); > - if (attr && setup_max_cpus > (uintptr_t)attr->data) { > + if (!IS_ERR(attr) && attr && setup_max_cpus > (uintptr_t)attr->data) { This is wrong. We can not make the decision below without having access to attr. The function may wrongly return false if soc_device_match() returns an error. Guenter > dev_info(dev, "Watchdog blacklisted on %s %s\n", attr->soc_id, > attr->revision); > return true; > _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8141CC433ED for ; Mon, 19 Apr 2021 13:37:09 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F3B2060C3F for ; 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Mon, 19 Apr 2021 06:36:41 -0700 (PDT) Subject: Re: [RFC v1 PATCH 3/3] driver: update all the code that use soc_device_match To: "Alice Guo (OSS)" , gregkh@linuxfoundation.org, rafael@kernel.org, horia.geanta@nxp.com, aymen.sghaier@nxp.com, herbert@gondor.apana.org.au, davem@davemloft.net, tony@atomide.com, geert+renesas@glider.be, mturquette@baylibre.com, sboyd@kernel.org, vkoul@kernel.org, peter.ujfalusi@gmail.com, a.hajda@samsung.com, narmstrong@baylibre.com, robert.foss@linaro.org, airlied@linux.ie, daniel@ffwll.ch, khilman@baylibre.com, tomba@kernel.org, jyri.sarha@iki.fi, joro@8bytes.org, will@kernel.org, mchehab@kernel.org, ulf.hansson@linaro.org, adrian.hunter@intel.com, kishon@ti.com, kuba@kernel.org, linus.walleij@linaro.org, Roy.Pledge@nxp.com, leoyang.li@nxp.com, ssantosh@kernel.org, matthias.bgg@gmail.com, edubezval@gmail.com, j-keerthy@ti.com, balbi@kernel.org, linux@prisktech.co.nz, stern@rowland.harvard.edu, wim@linux-watchdog.org Cc: linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, dmaengine@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, netdev@vger.kernel.org, linux-phy@lists.infradead.org, linux-gpio@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-staging@lists.linux.dev, linux-mediatek@lists.infradead.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-watchdog@vger.kernel.org References: <20210419042722.27554-1-alice.guo@oss.nxp.com> <20210419042722.27554-4-alice.guo@oss.nxp.com> From: Guenter Roeck Autocrypt: addr=linux@roeck-us.net; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210419042722.27554-4-alice.guo@oss.nxp.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210419_063644_357351_4ABFEBC2 X-CRM114-Status: GOOD ( 16.17 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On 4/18/21 9:27 PM, Alice Guo (OSS) wrote: > From: Alice Guo > > Update all the code that use soc_device_match because add support for > soc_device_match returning -EPROBE_DEFER. > > Signed-off-by: Alice Guo > --- [ ... ] > drivers/watchdog/renesas_wdt.c | 2 +- > 48 files changed, 131 insertions(+), 52 deletions(-) > [ ... ] > diff --git a/drivers/watchdog/renesas_wdt.c b/drivers/watchdog/renesas_wdt.c > index 5791198960e6..fdc534dc4024 100644 > --- a/drivers/watchdog/renesas_wdt.c > +++ b/drivers/watchdog/renesas_wdt.c > @@ -197,7 +197,7 @@ static bool rwdt_blacklisted(struct device *dev) > const struct soc_device_attribute *attr; > > attr = soc_device_match(rwdt_quirks_match); > - if (attr && setup_max_cpus > (uintptr_t)attr->data) { > + if (!IS_ERR(attr) && attr && setup_max_cpus > (uintptr_t)attr->data) { This is wrong. We can not make the decision below without having access to attr. The function may wrongly return false if soc_device_match() returns an error. Guenter > dev_info(dev, "Watchdog blacklisted on %s %s\n", attr->soc_id, > attr->revision); > return true; > _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B58DAC433B4 for ; Mon, 19 Apr 2021 13:36:46 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EF49660C3F for ; 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Mon, 19 Apr 2021 06:36:42 -0700 (PDT) Received: from server.roeck-us.net ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id p22sm3563941otf.25.2021.04.19.06.36.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 19 Apr 2021 06:36:41 -0700 (PDT) Subject: Re: [RFC v1 PATCH 3/3] driver: update all the code that use soc_device_match To: "Alice Guo (OSS)" , gregkh@linuxfoundation.org, rafael@kernel.org, horia.geanta@nxp.com, aymen.sghaier@nxp.com, herbert@gondor.apana.org.au, davem@davemloft.net, tony@atomide.com, geert+renesas@glider.be, mturquette@baylibre.com, sboyd@kernel.org, vkoul@kernel.org, peter.ujfalusi@gmail.com, a.hajda@samsung.com, narmstrong@baylibre.com, robert.foss@linaro.org, airlied@linux.ie, daniel@ffwll.ch, khilman@baylibre.com, tomba@kernel.org, jyri.sarha@iki.fi, joro@8bytes.org, will@kernel.org, mchehab@kernel.org, ulf.hansson@linaro.org, adrian.hunter@intel.com, kishon@ti.com, kuba@kernel.org, linus.walleij@linaro.org, Roy.Pledge@nxp.com, leoyang.li@nxp.com, ssantosh@kernel.org, matthias.bgg@gmail.com, edubezval@gmail.com, j-keerthy@ti.com, balbi@kernel.org, linux@prisktech.co.nz, stern@rowland.harvard.edu, wim@linux-watchdog.org References: <20210419042722.27554-1-alice.guo@oss.nxp.com> <20210419042722.27554-4-alice.guo@oss.nxp.com> From: Guenter Roeck Autocrypt: addr=linux@roeck-us.net; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210419042722.27554-4-alice.guo@oss.nxp.com> Content-Language: en-US X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-usb@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-gpio@vger.kernel.org, netdev@vger.kernel.org, linux-pm@vger.kernel.org, linux-staging@lists.linux.dev, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-renesas-soc@vger.kernel.org, linux-phy@lists.infradead.org, iommu@lists.linux-foundation.org, linux-mediatek@lists.infradead.org, linux-crypto@vger.kernel.org, dmaengine@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-omap@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On 4/18/21 9:27 PM, Alice Guo (OSS) wrote: > From: Alice Guo > > Update all the code that use soc_device_match because add support for > soc_device_match returning -EPROBE_DEFER. > > Signed-off-by: Alice Guo > --- [ ... ] > drivers/watchdog/renesas_wdt.c | 2 +- > 48 files changed, 131 insertions(+), 52 deletions(-) > [ ... ] > diff --git a/drivers/watchdog/renesas_wdt.c b/drivers/watchdog/renesas_wdt.c > index 5791198960e6..fdc534dc4024 100644 > --- a/drivers/watchdog/renesas_wdt.c > +++ b/drivers/watchdog/renesas_wdt.c > @@ -197,7 +197,7 @@ static bool rwdt_blacklisted(struct device *dev) > const struct soc_device_attribute *attr; > > attr = soc_device_match(rwdt_quirks_match); > - if (attr && setup_max_cpus > (uintptr_t)attr->data) { > + if (!IS_ERR(attr) && attr && setup_max_cpus > (uintptr_t)attr->data) { This is wrong. We can not make the decision below without having access to attr. The function may wrongly return false if soc_device_match() returns an error. 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Mon, 19 Apr 2021 06:36:41 -0700 (PDT) Subject: Re: [RFC v1 PATCH 3/3] driver: update all the code that use soc_device_match To: "Alice Guo (OSS)" , gregkh@linuxfoundation.org, rafael@kernel.org, horia.geanta@nxp.com, aymen.sghaier@nxp.com, herbert@gondor.apana.org.au, davem@davemloft.net, tony@atomide.com, geert+renesas@glider.be, mturquette@baylibre.com, sboyd@kernel.org, vkoul@kernel.org, peter.ujfalusi@gmail.com, a.hajda@samsung.com, narmstrong@baylibre.com, robert.foss@linaro.org, airlied@linux.ie, daniel@ffwll.ch, khilman@baylibre.com, tomba@kernel.org, jyri.sarha@iki.fi, joro@8bytes.org, will@kernel.org, mchehab@kernel.org, ulf.hansson@linaro.org, adrian.hunter@intel.com, kishon@ti.com, kuba@kernel.org, linus.walleij@linaro.org, Roy.Pledge@nxp.com, leoyang.li@nxp.com, ssantosh@kernel.org, matthias.bgg@gmail.com, edubezval@gmail.com, j-keerthy@ti.com, balbi@kernel.org, linux@prisktech.co.nz, stern@rowland.harvard.edu, wim@linux-watchdog.org Cc: linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, dmaengine@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, netdev@vger.kernel.org, linux-phy@lists.infradead.org, linux-gpio@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-staging@lists.linux.dev, linux-mediatek@lists.infradead.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-watchdog@vger.kernel.org References: <20210419042722.27554-1-alice.guo@oss.nxp.com> <20210419042722.27554-4-alice.guo@oss.nxp.com> From: Guenter Roeck Autocrypt: addr=linux@roeck-us.net; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210419042722.27554-4-alice.guo@oss.nxp.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210419_063644_357351_4ABFEBC2 X-CRM114-Status: GOOD ( 16.17 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org On 4/18/21 9:27 PM, Alice Guo (OSS) wrote: > From: Alice Guo > > Update all the code that use soc_device_match because add support for > soc_device_match returning -EPROBE_DEFER. > > Signed-off-by: Alice Guo > --- [ ... ] > drivers/watchdog/renesas_wdt.c | 2 +- > 48 files changed, 131 insertions(+), 52 deletions(-) > [ ... ] > diff --git a/drivers/watchdog/renesas_wdt.c b/drivers/watchdog/renesas_wdt.c > index 5791198960e6..fdc534dc4024 100644 > --- a/drivers/watchdog/renesas_wdt.c > +++ b/drivers/watchdog/renesas_wdt.c > @@ -197,7 +197,7 @@ static bool rwdt_blacklisted(struct device *dev) > const struct soc_device_attribute *attr; > > attr = soc_device_match(rwdt_quirks_match); > - if (attr && setup_max_cpus > (uintptr_t)attr->data) { > + if (!IS_ERR(attr) && attr && setup_max_cpus > (uintptr_t)attr->data) { This is wrong. We can not make the decision below without having access to attr. The function may wrongly return false if soc_device_match() returns an error. Guenter > dev_info(dev, "Watchdog blacklisted on %s %s\n", attr->soc_id, > attr->revision); > return true; > _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DDCC6C433B4 for ; Mon, 19 Apr 2021 13:36:58 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 49DF8613AB for ; 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Mon, 19 Apr 2021 06:36:41 -0700 (PDT) Subject: Re: [RFC v1 PATCH 3/3] driver: update all the code that use soc_device_match To: "Alice Guo (OSS)" , gregkh@linuxfoundation.org, rafael@kernel.org, horia.geanta@nxp.com, aymen.sghaier@nxp.com, herbert@gondor.apana.org.au, davem@davemloft.net, tony@atomide.com, geert+renesas@glider.be, mturquette@baylibre.com, sboyd@kernel.org, vkoul@kernel.org, peter.ujfalusi@gmail.com, a.hajda@samsung.com, narmstrong@baylibre.com, robert.foss@linaro.org, airlied@linux.ie, daniel@ffwll.ch, khilman@baylibre.com, tomba@kernel.org, jyri.sarha@iki.fi, joro@8bytes.org, will@kernel.org, mchehab@kernel.org, ulf.hansson@linaro.org, adrian.hunter@intel.com, kishon@ti.com, kuba@kernel.org, linus.walleij@linaro.org, Roy.Pledge@nxp.com, leoyang.li@nxp.com, ssantosh@kernel.org, matthias.bgg@gmail.com, edubezval@gmail.com, j-keerthy@ti.com, balbi@kernel.org, linux@prisktech.co.nz, stern@rowland.harvard.edu, wim@linux-watchdog.org Cc: linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, linux-omap@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, dmaengine@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, netdev@vger.kernel.org, linux-phy@lists.infradead.org, linux-gpio@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-staging@lists.linux.dev, linux-mediatek@lists.infradead.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-watchdog@vger.kernel.org References: <20210419042722.27554-1-alice.guo@oss.nxp.com> <20210419042722.27554-4-alice.guo@oss.nxp.com> From: Guenter Roeck Autocrypt: addr=linux@roeck-us.net; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210419042722.27554-4-alice.guo@oss.nxp.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210419_063644_357351_4ABFEBC2 X-CRM114-Status: GOOD ( 16.17 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org On 4/18/21 9:27 PM, Alice Guo (OSS) wrote: > From: Alice Guo > > Update all the code that use soc_device_match because add support for > soc_device_match returning -EPROBE_DEFER. > > Signed-off-by: Alice Guo > --- [ ... ] > drivers/watchdog/renesas_wdt.c | 2 +- > 48 files changed, 131 insertions(+), 52 deletions(-) > [ ... ] > diff --git a/drivers/watchdog/renesas_wdt.c b/drivers/watchdog/renesas_wdt.c > index 5791198960e6..fdc534dc4024 100644 > --- a/drivers/watchdog/renesas_wdt.c > +++ b/drivers/watchdog/renesas_wdt.c > @@ -197,7 +197,7 @@ static bool rwdt_blacklisted(struct device *dev) > const struct soc_device_attribute *attr; > > attr = soc_device_match(rwdt_quirks_match); > - if (attr && setup_max_cpus > (uintptr_t)attr->data) { > + if (!IS_ERR(attr) && attr && setup_max_cpus > (uintptr_t)attr->data) { This is wrong. We can not make the decision below without having access to attr. The function may wrongly return false if soc_device_match() returns an error. Guenter > dev_info(dev, "Watchdog blacklisted on %s %s\n", attr->soc_id, > attr->revision); > return true; > -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy