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Thu, 27 Aug 2020 15:38:58 -0700 (PDT) To: Joe Perches , Julia Lawall References: <20200824222322.22962-1-alex.dewar90@gmail.com> <48f2dc90-7852-eaf1-55d7-2c85cf954688@rasmusvillemoes.dk> <20200827071537.GA168593@kroah.com> <20200827131819.7rcl2f5js3hkoqj2@lenovo-laptop> <20200827144846.yauuttjaqtxaldxg@lenovo-laptop> <5d1dfb9b031130d4d20763ec621233a19d6a88a2.camel@perches.com> <5853c58e-7d26-2cf9-6cbf-698ecd93cbf9@linux.com> From: Denis Efremov Autocrypt: addr=efremov@linux.com; keydata= mQINBFsJUXwBEADDnzbOGE/X5ZdHqpK/kNmR7AY39b/rR+2Wm/VbQHV+jpGk8ZL07iOWnVe1 ZInSp3Ze+scB4ZK+y48z0YDvKUU3L85Nb31UASB2bgWIV+8tmW4kV8a2PosqIc4wp4/Qa2A/ Ip6q+bWurxOOjyJkfzt51p6Th4FTUsuoxINKRMjHrs/0y5oEc7Wt/1qk2ljmnSocg3fMxo8+ y6IxmXt5tYvt+FfBqx/1XwXuOSd0WOku+/jscYmBPwyrLdk/pMSnnld6a2Fp1zxWIKz+4VJm QEIlCTe5SO3h5sozpXeWS916VwwCuf8oov6706yC4MlmAqsQpBdoihQEA7zgh+pk10sCvviX FYM4gIcoMkKRex/NSqmeh3VmvQunEv6P+hNMKnIlZ2eJGQpz/ezwqNtV/przO95FSMOQxvQY 11TbyNxudW4FBx6K3fzKjw5dY2PrAUGfHbpI3wtVUNxSjcE6iaJHWUA+8R6FLnTXyEObRzTS fAjfiqcta+iLPdGGkYtmW1muy/v0juldH9uLfD9OfYODsWia2Ve79RB9cHSgRv4nZcGhQmP2 wFpLqskh+qlibhAAqT3RQLRsGabiTjzUkdzO1gaNlwufwqMXjZNkLYu1KpTNUegx3MNEi2p9 CmmDxWMBSMFofgrcy8PJ0jUnn9vWmtn3gz10FgTgqC7B3UvARQARAQABtCFEZW5pcyBFZnJl bW92IDxlZnJlbW92QGxpbnV4LmNvbT6JAlcEEwEIAEECGwMFCwkIBwIGFQoJCAsCBBYCAwEC HgECF4ACGQEWIQR2VAM2ApQN8ZIP5AO1IpWwM1AwHwUCXsQtuwUJB31DPwAKCRC1IpWwM1Aw H3dQD/9E/hFd2yPwWA5cJ5jmBeQt4lBi5wUXd2+9Y0mBIn40F17Xrjebo+D8E5y6S/wqfImW nSDYaMfIIljdjmUUanR9R7Cxd/Z548Qaa4F1AtB4XN3W1L49q21h942iu0yxSLZtq9ayeja6 flCB7a+gKjHMWFDB4nRi4gEJvZN897wdJp2tAtUfErXvvxR2/ymKsIf5L0FZBnIaGpqRbfgG Slu2RSpCkvxqlLaYGeYwGODs0QR7X2i70QGeEzznN1w1MGKLOFYw6lLeO8WPi05fHzpm5pK6 mTKkpZ53YsRfWL/HY3kLZPWm1cfAxa/rKvlhom+2V8cO4UoLYOzZLNW9HCFnNxo7zHoJ1shR gYcCq8XgiJBF6jfM2RZYkOAJd6E3mVUxctosNq6av3NOdsp1Au0CYdQ6Whi13azZ81pDlJQu Hdb0ZpDzysJKhORsf0Hr0PSlYKOdHuhl8fXKYOGQxpYrWpOnjrlEORl7NHILknXDfd8mccnf 4boKIZP7FbqSLw1RSaeoCnqH4/b+ntsIGvY3oJjzbQVq7iEpIhIoQLxeklFl1xvJAOuSQwII I9S0MsOm1uoT/mwq+wCYux4wQhALxSote/EcoUxK7DIW9ra4fCCo0bzaX7XJ+dJXBWb0Ixxm yLl39M+7gnhvZyU+wkTYERp1qBe9ngjd0QTZNVi7MbkCDQRbCVF8ARAA3ITFo8OvvzQJT2cY nPR718Npm+UL6uckm0Jr0IAFdstRZ3ZLW/R9e24nfF3A8Qga3VxJdhdEOzZKBbl1nadZ9kKU nq87te0eBJu+EbcuMv6+njT4CBdwCzJnBZ7ApFpvM8CxIUyFAvaz4EZZxkfEpxaPAivR1Sa2 2x7OMWH/78laB6KsPgwxV7fir45VjQEyJZ5ac5ydG9xndFmb76upD7HhV7fnygwf/uIPOzNZ YVElGVnqTBqisFRWg9w3Bqvqb/W6prJsoh7F0/THzCzp6PwbAnXDedN388RIuHtXJ+wTsPA0 oL0H4jQ+4XuAWvghD/+RXJI5wcsAHx7QkDcbTddrhhGdGcd06qbXe2hNVgdCtaoAgpCEetW8 /a8H+lEBBD4/iD2La39sfE+dt100cKgUP9MukDvOF2fT6GimdQ8TeEd1+RjYyG9SEJpVIxj6 H3CyGjFwtIwodfediU/ygmYfKXJIDmVpVQi598apSoWYT/ltv+NXTALjyNIVvh5cLRz8YxoF sFI2VpZ5PMrr1qo+DB1AbH00b0l2W7HGetSH8gcgpc7q3kCObmDSa3aTGTkawNHzbceEJrL6 mRD6GbjU4GPD06/dTRIhQatKgE4ekv5wnxBK6v9CVKViqpn7vIxiTI9/VtTKndzdnKE6C72+ jTwSYVa1vMxJABtOSg8AEQEAAYkCPAQYAQgAJgIbDBYhBHZUAzYClA3xkg/kA7UilbAzUDAf BQJexC4MBQkHfUOQAAoJELUilbAzUDAfPYoQAJdBGd9WZIid10FCoI30QXA82SHmxWe0Xy7h r4bbZobDPc7GbTHeDIYmUF24jI15NZ/Xy9ADAL0TpEg3fNVad2eslhCwiQViWfKOGOLLMe7v zod9dwxYdGXnNRlW+YOCdFNVPMvPDr08zgzXaZ2+QJjp44HSyzxgONmHAroFcqCFUlfAqUDO T30gV5bQ8BHqvfWyEhJT+CS3JJyP8BmmSgPa0Adlp6Do+pRsOO1YNNO78SYABhMi3fEa7X37 WxL31TrNCPnIauTgZtf/KCFQJpKaakC3ffEkPhyTjEl7oOE9xccNjccZraadi+2uHV0ULA1m ycHhb817A03n1I00QwLf2wOkckdqTqRbFFI/ik69hF9hemK/BmAHpShI+z1JsYT9cSs8D7wb aF/jQVy4URensgAPkgXsRiboqOj/rTz9F5mpd/gPU/IOUPFEMoo4TInt/+dEVECHioU3RRrW EahrGMfRngbdp/mKs9aBR56ECMfFFUPyI3VJsNbgpcIJjV/0N+JdJKQpJ/4uQ2zNm0wH/RU8 CRJvEwtKemX6fp/zLI36Gvz8zJIjSBIEqCb7vdgvWarksrhmi6/Jay5zRZ03+k6YwiqgX8t7 ANwvYa1h1dQ36OiTqm1cIxRCGl4wrypOVGx3OjCar7sBLD+NkwO4RaqFvdv0xuuy4x01VnOF Message-ID: Date: Fri, 28 Aug 2020 01:38:55 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-Greylist: Sender IP whitelisted, Sender e-mail whitelisted, not delayed by milter-greylist-4.4.3 (isis.lip6.fr [132.227.60.2]); Fri, 28 Aug 2020 00:39:01 +0200 (CEST) X-Greylist: Sender DNS name whitelisted, not delayed by milter-greylist-4.4.3 (isis.lip6.fr [132.227.60.2]); Fri, 28 Aug 2020 00:38:59 +0200 (CEST) X-Scanned-By: MIMEDefang 2.78 on 132.227.60.2 X-Scanned-By: MIMEDefang 2.78 on 132.227.60.2 Cc: Kees Cook , Greg Kroah-Hartman , linux-usb@vger.kernel.org, Rasmus Villemoes , "Gustavo A. R. Silva" , linux-kernel@vger.kernel.org, Alex Dewar , accessrunner-general@lists.sourceforge.net, cocci Subject: Re: [Cocci] [PATCH] usb: atm: don't use snprintf() for sysfs attrs X-BeenThere: cocci@systeme.lip6.fr X-Mailman-Version: 2.1.13 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: cocci-bounces@systeme.lip6.fr Errors-To: cocci-bounces@systeme.lip6.fr > > I tried: > @@ > identifier f_show =~ "^.*_show$"; This will miss this kind of functions: ./drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c:1953:static DEVICE_ATTR(vbios_version, 0444, amdgpu_atombios_get_vbios_version, ./drivers/gpu/drm/amd/amdgpu/df_v3_6.c:266:static DEVICE_ATTR(df_cntr_avail, S_IRUGO, df_v3_6_get_df_cntr_avail, NULL); ./drivers/input/touchscreen/melfas_mip4.c:1348:static DEVICE_ATTR(fw_version, S_IRUGO, mip4_sysfs_read_fw_version, NULL); ./drivers/input/touchscreen/melfas_mip4.c:1373:static DEVICE_ATTR(hw_version, S_IRUGO, mip4_sysfs_read_hw_version, NULL); ./drivers/input/touchscreen/melfas_mip4.c:1392:static DEVICE_ATTR(product_id, S_IRUGO, mip4_sysfs_read_product_id, NULL); ... > identifier dev, attr, buf; > const char *chr; > @@ > ssize_t f_show(struct device *dev, struct device_attribute *attr, char > *buf) > { > <... > ( > - sprintf > + sysfs_sprintf > (...); > | > - snprintf(buf, PAGE_SIZE, > + sysfs_sprintf(buf, > ...); > | > - scnprintf(buf, PAGE_SIZE, > + sysfs_sprintf(buf, > ...); > | > strcpy(buf, chr); > sysfs_strcpy(buf, chr); > ) > ...> > } > > which finds direct statements without an assign > but that doesn't find > > arch/arm/common/dmabounce.c:static ssize_t dmabounce_show(struct device *dev, struct device_attribute *attr, char *buf) > arch/arm/common/dmabounce.c-{ > arch/arm/common/dmabounce.c- struct dmabounce_device_info *device_info = dev->archdata.dmabounce; > arch/arm/common/dmabounce.c- return sprintf(buf, "%lu %lu %lu %lu %lu %lu\n", > arch/arm/common/dmabounce.c- device_info->small.allocs, > arch/arm/common/dmabounce.c- device_info->large.allocs, > arch/arm/common/dmabounce.c- device_info->total_allocs - device_info->small.allocs - > arch/arm/common/dmabounce.c- device_info->large.allocs, > arch/arm/common/dmabounce.c- device_info->total_allocs, > arch/arm/common/dmabounce.c- device_info->map_op_count, > arch/arm/common/dmabounce.c- device_info->bounce_count); > arch/arm/common/dmabounce.c-} > This will match it (the difference is in the ';'): @@ identifier f_show =~ "^.*_show$"; identifier dev, attr, buf; @@ ssize_t f_show(struct device *dev, struct device_attribute *attr, char *buf) { <... - sprintf + sysfs_sprintf (...) ...> } Regards, Denis _______________________________________________ Cocci mailing list Cocci@systeme.lip6.fr https://systeme.lip6.fr/mailman/listinfo/cocci 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=-7.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 BFD91C433E6 for ; Thu, 27 Aug 2020 22:39:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 99D052080C for ; 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Thu, 27 Aug 2020 15:38:58 -0700 (PDT) Received: from [192.168.1.8] ([213.87.147.111]) by smtp.gmail.com with ESMTPSA id d21sm355589lfi.41.2020.08.27.15.38.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 27 Aug 2020 15:38:58 -0700 (PDT) To: Joe Perches , Julia Lawall Cc: "Gustavo A. R. Silva" , Kees Cook , Greg Kroah-Hartman , linux-usb@vger.kernel.org, Rasmus Villemoes , linux-kernel@vger.kernel.org, cocci , accessrunner-general@lists.sourceforge.net, Alex Dewar References: <20200824222322.22962-1-alex.dewar90@gmail.com> <48f2dc90-7852-eaf1-55d7-2c85cf954688@rasmusvillemoes.dk> <20200827071537.GA168593@kroah.com> <20200827131819.7rcl2f5js3hkoqj2@lenovo-laptop> <20200827144846.yauuttjaqtxaldxg@lenovo-laptop> <5d1dfb9b031130d4d20763ec621233a19d6a88a2.camel@perches.com> <5853c58e-7d26-2cf9-6cbf-698ecd93cbf9@linux.com> From: Denis Efremov Autocrypt: addr=efremov@linux.com; keydata= mQINBFsJUXwBEADDnzbOGE/X5ZdHqpK/kNmR7AY39b/rR+2Wm/VbQHV+jpGk8ZL07iOWnVe1 ZInSp3Ze+scB4ZK+y48z0YDvKUU3L85Nb31UASB2bgWIV+8tmW4kV8a2PosqIc4wp4/Qa2A/ Ip6q+bWurxOOjyJkfzt51p6Th4FTUsuoxINKRMjHrs/0y5oEc7Wt/1qk2ljmnSocg3fMxo8+ y6IxmXt5tYvt+FfBqx/1XwXuOSd0WOku+/jscYmBPwyrLdk/pMSnnld6a2Fp1zxWIKz+4VJm QEIlCTe5SO3h5sozpXeWS916VwwCuf8oov6706yC4MlmAqsQpBdoihQEA7zgh+pk10sCvviX FYM4gIcoMkKRex/NSqmeh3VmvQunEv6P+hNMKnIlZ2eJGQpz/ezwqNtV/przO95FSMOQxvQY 11TbyNxudW4FBx6K3fzKjw5dY2PrAUGfHbpI3wtVUNxSjcE6iaJHWUA+8R6FLnTXyEObRzTS fAjfiqcta+iLPdGGkYtmW1muy/v0juldH9uLfD9OfYODsWia2Ve79RB9cHSgRv4nZcGhQmP2 wFpLqskh+qlibhAAqT3RQLRsGabiTjzUkdzO1gaNlwufwqMXjZNkLYu1KpTNUegx3MNEi2p9 CmmDxWMBSMFofgrcy8PJ0jUnn9vWmtn3gz10FgTgqC7B3UvARQARAQABtCFEZW5pcyBFZnJl bW92IDxlZnJlbW92QGxpbnV4LmNvbT6JAlcEEwEIAEECGwMFCwkIBwIGFQoJCAsCBBYCAwEC HgECF4ACGQEWIQR2VAM2ApQN8ZIP5AO1IpWwM1AwHwUCXsQtuwUJB31DPwAKCRC1IpWwM1Aw H3dQD/9E/hFd2yPwWA5cJ5jmBeQt4lBi5wUXd2+9Y0mBIn40F17Xrjebo+D8E5y6S/wqfImW nSDYaMfIIljdjmUUanR9R7Cxd/Z548Qaa4F1AtB4XN3W1L49q21h942iu0yxSLZtq9ayeja6 flCB7a+gKjHMWFDB4nRi4gEJvZN897wdJp2tAtUfErXvvxR2/ymKsIf5L0FZBnIaGpqRbfgG Slu2RSpCkvxqlLaYGeYwGODs0QR7X2i70QGeEzznN1w1MGKLOFYw6lLeO8WPi05fHzpm5pK6 mTKkpZ53YsRfWL/HY3kLZPWm1cfAxa/rKvlhom+2V8cO4UoLYOzZLNW9HCFnNxo7zHoJ1shR gYcCq8XgiJBF6jfM2RZYkOAJd6E3mVUxctosNq6av3NOdsp1Au0CYdQ6Whi13azZ81pDlJQu Hdb0ZpDzysJKhORsf0Hr0PSlYKOdHuhl8fXKYOGQxpYrWpOnjrlEORl7NHILknXDfd8mccnf 4boKIZP7FbqSLw1RSaeoCnqH4/b+ntsIGvY3oJjzbQVq7iEpIhIoQLxeklFl1xvJAOuSQwII I9S0MsOm1uoT/mwq+wCYux4wQhALxSote/EcoUxK7DIW9ra4fCCo0bzaX7XJ+dJXBWb0Ixxm yLl39M+7gnhvZyU+wkTYERp1qBe9ngjd0QTZNVi7MbkCDQRbCVF8ARAA3ITFo8OvvzQJT2cY nPR718Npm+UL6uckm0Jr0IAFdstRZ3ZLW/R9e24nfF3A8Qga3VxJdhdEOzZKBbl1nadZ9kKU nq87te0eBJu+EbcuMv6+njT4CBdwCzJnBZ7ApFpvM8CxIUyFAvaz4EZZxkfEpxaPAivR1Sa2 2x7OMWH/78laB6KsPgwxV7fir45VjQEyJZ5ac5ydG9xndFmb76upD7HhV7fnygwf/uIPOzNZ YVElGVnqTBqisFRWg9w3Bqvqb/W6prJsoh7F0/THzCzp6PwbAnXDedN388RIuHtXJ+wTsPA0 oL0H4jQ+4XuAWvghD/+RXJI5wcsAHx7QkDcbTddrhhGdGcd06qbXe2hNVgdCtaoAgpCEetW8 /a8H+lEBBD4/iD2La39sfE+dt100cKgUP9MukDvOF2fT6GimdQ8TeEd1+RjYyG9SEJpVIxj6 H3CyGjFwtIwodfediU/ygmYfKXJIDmVpVQi598apSoWYT/ltv+NXTALjyNIVvh5cLRz8YxoF sFI2VpZ5PMrr1qo+DB1AbH00b0l2W7HGetSH8gcgpc7q3kCObmDSa3aTGTkawNHzbceEJrL6 mRD6GbjU4GPD06/dTRIhQatKgE4ekv5wnxBK6v9CVKViqpn7vIxiTI9/VtTKndzdnKE6C72+ jTwSYVa1vMxJABtOSg8AEQEAAYkCPAQYAQgAJgIbDBYhBHZUAzYClA3xkg/kA7UilbAzUDAf BQJexC4MBQkHfUOQAAoJELUilbAzUDAfPYoQAJdBGd9WZIid10FCoI30QXA82SHmxWe0Xy7h r4bbZobDPc7GbTHeDIYmUF24jI15NZ/Xy9ADAL0TpEg3fNVad2eslhCwiQViWfKOGOLLMe7v zod9dwxYdGXnNRlW+YOCdFNVPMvPDr08zgzXaZ2+QJjp44HSyzxgONmHAroFcqCFUlfAqUDO T30gV5bQ8BHqvfWyEhJT+CS3JJyP8BmmSgPa0Adlp6Do+pRsOO1YNNO78SYABhMi3fEa7X37 WxL31TrNCPnIauTgZtf/KCFQJpKaakC3ffEkPhyTjEl7oOE9xccNjccZraadi+2uHV0ULA1m ycHhb817A03n1I00QwLf2wOkckdqTqRbFFI/ik69hF9hemK/BmAHpShI+z1JsYT9cSs8D7wb aF/jQVy4URensgAPkgXsRiboqOj/rTz9F5mpd/gPU/IOUPFEMoo4TInt/+dEVECHioU3RRrW EahrGMfRngbdp/mKs9aBR56ECMfFFUPyI3VJsNbgpcIJjV/0N+JdJKQpJ/4uQ2zNm0wH/RU8 CRJvEwtKemX6fp/zLI36Gvz8zJIjSBIEqCb7vdgvWarksrhmi6/Jay5zRZ03+k6YwiqgX8t7 ANwvYa1h1dQ36OiTqm1cIxRCGl4wrypOVGx3OjCar7sBLD+NkwO4RaqFvdv0xuuy4x01VnOF Subject: Re: [Cocci] [PATCH] usb: atm: don't use snprintf() for sysfs attrs Message-ID: Date: Fri, 28 Aug 2020 01:38:55 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org > > I tried: > @@ > identifier f_show =~ "^.*_show$"; This will miss this kind of functions: ./drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c:1953:static DEVICE_ATTR(vbios_version, 0444, amdgpu_atombios_get_vbios_version, ./drivers/gpu/drm/amd/amdgpu/df_v3_6.c:266:static DEVICE_ATTR(df_cntr_avail, S_IRUGO, df_v3_6_get_df_cntr_avail, NULL); ./drivers/input/touchscreen/melfas_mip4.c:1348:static DEVICE_ATTR(fw_version, S_IRUGO, mip4_sysfs_read_fw_version, NULL); ./drivers/input/touchscreen/melfas_mip4.c:1373:static DEVICE_ATTR(hw_version, S_IRUGO, mip4_sysfs_read_hw_version, NULL); ./drivers/input/touchscreen/melfas_mip4.c:1392:static DEVICE_ATTR(product_id, S_IRUGO, mip4_sysfs_read_product_id, NULL); ... > identifier dev, attr, buf; > const char *chr; > @@ > ssize_t f_show(struct device *dev, struct device_attribute *attr, char > *buf) > { > <... > ( > - sprintf > + sysfs_sprintf > (...); > | > - snprintf(buf, PAGE_SIZE, > + sysfs_sprintf(buf, > ...); > | > - scnprintf(buf, PAGE_SIZE, > + sysfs_sprintf(buf, > ...); > | > strcpy(buf, chr); > sysfs_strcpy(buf, chr); > ) > ...> > } > > which finds direct statements without an assign > but that doesn't find > > arch/arm/common/dmabounce.c:static ssize_t dmabounce_show(struct device *dev, struct device_attribute *attr, char *buf) > arch/arm/common/dmabounce.c-{ > arch/arm/common/dmabounce.c- struct dmabounce_device_info *device_info = dev->archdata.dmabounce; > arch/arm/common/dmabounce.c- return sprintf(buf, "%lu %lu %lu %lu %lu %lu\n", > arch/arm/common/dmabounce.c- device_info->small.allocs, > arch/arm/common/dmabounce.c- device_info->large.allocs, > arch/arm/common/dmabounce.c- device_info->total_allocs - device_info->small.allocs - > arch/arm/common/dmabounce.c- device_info->large.allocs, > arch/arm/common/dmabounce.c- device_info->total_allocs, > arch/arm/common/dmabounce.c- device_info->map_op_count, > arch/arm/common/dmabounce.c- device_info->bounce_count); > arch/arm/common/dmabounce.c-} > This will match it (the difference is in the ';'): @@ identifier f_show =~ "^.*_show$"; identifier dev, attr, buf; @@ ssize_t f_show(struct device *dev, struct device_attribute *attr, char *buf) { <... - sprintf + sysfs_sprintf (...) ...> } Regards, Denis