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[188.155.176.92]) by smtp.gmail.com with ESMTPSA id ce21-20020a170906b25500b006e89869cbf9sm5608802ejb.105.2022.04.19.04.34.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Apr 2022 04:34:56 -0700 (PDT) From: Krzysztof Kozlowski To: Greg Kroah-Hartman , "Rafael J. Wysocki" Cc: Stuart Yoder , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Dexuan Cui , Bjorn Helgaas , Bjorn Andersson , Mathieu Poirier , Vineeth Vijayan , Peter Oberparleiter , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Andy Gross , linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, NXP Linux Team , linux-arm-kernel@lists.infradead.org, linux-hyperv@vger.kernel.org, linux-pci@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org, linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org, linux-spi@vger.kernel.org, virtualization@lists.linux-foundation.org, Linus Torvalds , Rasmus Villemoes , Andy Shevchenko , Krzysztof Kozlowski Subject: [PATCH v7 06/12] s390/cio: Use driver_set_override() instead of open-coding Date: Tue, 19 Apr 2022 13:34:29 +0200 Message-Id: <20220419113435.246203-7-krzysztof.kozlowski@linaro.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220419113435.246203-1-krzysztof.kozlowski@linaro.org> References: <20220419113435.246203-1-krzysztof.kozlowski@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org Use a helper to set driver_override to the reduce amount of duplicated code. Make the driver_override field const char, because it is not modified by the core and it matches other subsystems. Signed-off-by: Krzysztof Kozlowski Acked-by: Vineeth Vijayan --- drivers/s390/cio/cio.h | 6 +++++- drivers/s390/cio/css.c | 28 ++++------------------------ 2 files changed, 9 insertions(+), 25 deletions(-) diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h index 1cb9daf9c645..fa8df50bb49e 100644 --- a/drivers/s390/cio/cio.h +++ b/drivers/s390/cio/cio.h @@ -103,7 +103,11 @@ struct subchannel { struct work_struct todo_work; struct schib_config config; u64 dma_mask; - char *driver_override; /* Driver name to force a match */ + /* + * Driver name to force a match. Do not set directly, because core + * frees it. Use driver_set_override() to set or clear it. + */ + const char *driver_override; } __attribute__ ((aligned(8))); DECLARE_PER_CPU_ALIGNED(struct irb, cio_irb); diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index fa8293335077..913b6ddd040b 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -338,31 +338,11 @@ static ssize_t driver_override_store(struct device *dev, const char *buf, size_t count) { struct subchannel *sch = to_subchannel(dev); - char *driver_override, *old, *cp; - - /* We need to keep extra room for a newline */ - if (count >= (PAGE_SIZE - 1)) - return -EINVAL; - - driver_override = kstrndup(buf, count, GFP_KERNEL); - if (!driver_override) - return -ENOMEM; - - cp = strchr(driver_override, '\n'); - if (cp) - *cp = '\0'; - - device_lock(dev); - old = sch->driver_override; - if (strlen(driver_override)) { - sch->driver_override = driver_override; - } else { - kfree(driver_override); - sch->driver_override = NULL; - } - device_unlock(dev); + int ret; - kfree(old); + ret = driver_set_override(dev, &sch->driver_override, buf, count); + if (ret) + return ret; return count; } -- 2.32.0 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 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 77828C433F5 for ; Tue, 19 Apr 2022 11:58:57 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id B10DE18C7; Tue, 19 Apr 2022 13:58:05 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz B10DE18C7 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1650369535; bh=2h7uGU0aNAq2lVkKjbYnGxTyRuFu+H848C6PpQvaaOs=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=sIJiZTGdCqfixGEezrWzZnqXFUN5OH065kdJD6JMycXLGPVwSBae/4K1O2OkWBfA3 VMHddnrq0VboIlOb0SkHEiTKKDlKkt9eYa01fyCr8d3Dpmwg3L95Rv6Hi6v/5SME9s HCPTig8OBaLwuIwvxowVtHiDQDbkk77XrWyOi6mk= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 10706F805B2; Tue, 19 Apr 2022 13:52:37 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 6447CF804FB; Tue, 19 Apr 2022 13:35:05 +0200 (CEST) Received: from mail-ed1-x531.google.com (mail-ed1-x531.google.com [IPv6:2a00:1450:4864:20::531]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 58863F8025D for ; Tue, 19 Apr 2022 13:34:58 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 58863F8025D Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="lAgBbkTU" Received: by mail-ed1-x531.google.com with SMTP id t25so20858309edt.9 for ; Tue, 19 Apr 2022 04:34:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=38ZdSROX5+RqupZAHBAG40n0Dr6hAO3z18g5N59SQU4=; b=lAgBbkTU8D6YEYE8EnVc7TQgg9yEr1TplNJ63UCkyqf8OgNnbEGMYGuI0ZRt1YnUYR kRpzUg0XO57gjImkecp7vfOrmW6v8xsYuT+ykmV5SUJcz29qohXYrmCJTI7S2t2WEnmY zWSSpz6b3AQM0jiHTyP0UQ4lX9NEWkolxtvviMwY/VFI7K7PqkqfewJxRLZ92G+WDd3a 5+GPbuJLW9kL+l3TS2YvThY8XMvPqVq5exMhf16lR6dG9IJgDOBsGaYXv2G92fSmcLh/ 4fD229aWI/XNs7a02eGlv4mhOk4HHJqOdvHLlkD/PJA4giJ3K9/qVmo8vebRSosWnhPy b8nw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=38ZdSROX5+RqupZAHBAG40n0Dr6hAO3z18g5N59SQU4=; b=iQm5I7fZ6F1Y0WWeiKKzEKJGZWU2S4cgyPwTaIrjDpFBDT+EavL7Rc2sHngkAw7Lz0 zHu82A6T7V/c8xpTt7UbOcy5U/ViblREbjiqvFLSTHKb29nPRDiH89CQJFMHMFireWOR TDYj1f72YcMHsuyoveLICneips1XCK3maw8wn0f9hmhI0+S8WEiOPnhsDClnkQthYDRq GjKVQurVb34R1WjlQGJVx9SfNo/1PgEuyyO5Wk3/u+VJIkywiy//6A04QIXfT+zv0fDP P/4P3LsCBqtp69gM+PQ7tEXlPAPCBQsT8+REqUhbL86ztYlra80OP5Sy9fDeNLMm0ajy S2Mw== X-Gm-Message-State: AOAM530ekpk3SB+8PHalhmZx6sY8PHlLy0wwM43TT9YN+7qORMoF1+sJ tphP1IsK8m2VCqUpWEWHOoj8fg== X-Google-Smtp-Source: ABdhPJwnUhzb/0NAh+XYKj3k5xldAGjfpt63mghhlCD2VxFrpw9UxcHdu27TYmnA97GWmVv6IQjoNw== X-Received: by 2002:a05:6402:3713:b0:41d:96f6:8a09 with SMTP id ek19-20020a056402371300b0041d96f68a09mr16881762edb.136.1650368096901; Tue, 19 Apr 2022 04:34:56 -0700 (PDT) Received: from localhost.localdomain (xdsl-188-155-176-92.adslplus.ch. [188.155.176.92]) by smtp.gmail.com with ESMTPSA id ce21-20020a170906b25500b006e89869cbf9sm5608802ejb.105.2022.04.19.04.34.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Apr 2022 04:34:56 -0700 (PDT) From: Krzysztof Kozlowski To: Greg Kroah-Hartman , "Rafael J. Wysocki" Subject: [PATCH v7 06/12] s390/cio: Use driver_set_override() instead of open-coding Date: Tue, 19 Apr 2022 13:34:29 +0200 Message-Id: <20220419113435.246203-7-krzysztof.kozlowski@linaro.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220419113435.246203-1-krzysztof.kozlowski@linaro.org> References: <20220419113435.246203-1-krzysztof.kozlowski@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Tue, 19 Apr 2022 13:52:23 +0200 Cc: linux-hyperv@vger.kernel.org, Stuart Yoder , linux-pci@vger.kernel.org, linux-remoteproc@vger.kernel.org, alsa-devel@alsa-project.org, Peter Oberparleiter , Vineeth Vijayan , Alexander Gordeev , "K. Y. Srinivasan" , linux-clk@vger.kernel.org, linux-s390@vger.kernel.org, Wei Liu , Stephen Hemminger , Dexuan Cui , Andy Shevchenko , Andy Gross , NXP Linux Team , Christian Borntraeger , virtualization@lists.linux-foundation.org, Heiko Carstens , Vasily Gorbik , linux-arm-msm@vger.kernel.org, Haiyang Zhang , Rasmus Villemoes , Bjorn Helgaas , Bjorn Andersson , linux-arm-kernel@lists.infradead.org, Mathieu Poirier , linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, Krzysztof Kozlowski , Sven Schnelle , Linus Torvalds X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" Use a helper to set driver_override to the reduce amount of duplicated code. Make the driver_override field const char, because it is not modified by the core and it matches other subsystems. Signed-off-by: Krzysztof Kozlowski Acked-by: Vineeth Vijayan --- drivers/s390/cio/cio.h | 6 +++++- drivers/s390/cio/css.c | 28 ++++------------------------ 2 files changed, 9 insertions(+), 25 deletions(-) diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h index 1cb9daf9c645..fa8df50bb49e 100644 --- a/drivers/s390/cio/cio.h +++ b/drivers/s390/cio/cio.h @@ -103,7 +103,11 @@ struct subchannel { struct work_struct todo_work; struct schib_config config; u64 dma_mask; - char *driver_override; /* Driver name to force a match */ + /* + * Driver name to force a match. Do not set directly, because core + * frees it. Use driver_set_override() to set or clear it. + */ + const char *driver_override; } __attribute__ ((aligned(8))); DECLARE_PER_CPU_ALIGNED(struct irb, cio_irb); diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index fa8293335077..913b6ddd040b 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -338,31 +338,11 @@ static ssize_t driver_override_store(struct device *dev, const char *buf, size_t count) { struct subchannel *sch = to_subchannel(dev); - char *driver_override, *old, *cp; - - /* We need to keep extra room for a newline */ - if (count >= (PAGE_SIZE - 1)) - return -EINVAL; - - driver_override = kstrndup(buf, count, GFP_KERNEL); - if (!driver_override) - return -ENOMEM; - - cp = strchr(driver_override, '\n'); - if (cp) - *cp = '\0'; - - device_lock(dev); - old = sch->driver_override; - if (strlen(driver_override)) { - sch->driver_override = driver_override; - } else { - kfree(driver_override); - sch->driver_override = NULL; - } - device_unlock(dev); + int ret; - kfree(old); + ret = driver_set_override(dev, &sch->driver_override, buf, count); + if (ret) + return ret; return count; } -- 2.32.0 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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EDADDC433F5 for ; Tue, 19 Apr 2022 12:34:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=3ER2ADFf/cFt7fwIoaiCaVl8VNJJzqXzylSlVl5B+34=; b=oZ3KY61hrU5bDn jOGoBRm3Bzk8zg2903ee7j5ZpjAsPZcsmIy9dof2WLs8dGu1Dn+8h9gCBy9iMmlp1kBtMSuMA1b2/ /mt+dBefRaxhuEUzdizkqKUoPeCC0/MyA98d4rHHmTjOWEVykgMy0/juB35ciICi0QeQm7roUW3eB at/CKtBpwGFo9Ccv01blbpgtPz/J9+Po9wJErp32zBJqfZf8mk1CQkyfcoxLNklIdukHLw6x84gJg uH8U5H5XTLcoczZ2f6wDQ22zbwuczFM+rQ2IjhcY6oI7G6wMDH6oyYmpsuOTKieQj0aVkDVwf4vyy 6Z+oPV5pZ/N9z0lM0wqA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ngn2U-003W7o-Mt; Tue, 19 Apr 2022 12:33:04 +0000 Received: from mail-ed1-x533.google.com ([2a00:1450:4864:20::533]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ngm8L-003ADF-Bp for linux-arm-kernel@lists.infradead.org; Tue, 19 Apr 2022 11:35:04 +0000 Received: by mail-ed1-x533.google.com with SMTP id v4so20843812edl.7 for ; Tue, 19 Apr 2022 04:34:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=38ZdSROX5+RqupZAHBAG40n0Dr6hAO3z18g5N59SQU4=; b=lAgBbkTU8D6YEYE8EnVc7TQgg9yEr1TplNJ63UCkyqf8OgNnbEGMYGuI0ZRt1YnUYR kRpzUg0XO57gjImkecp7vfOrmW6v8xsYuT+ykmV5SUJcz29qohXYrmCJTI7S2t2WEnmY zWSSpz6b3AQM0jiHTyP0UQ4lX9NEWkolxtvviMwY/VFI7K7PqkqfewJxRLZ92G+WDd3a 5+GPbuJLW9kL+l3TS2YvThY8XMvPqVq5exMhf16lR6dG9IJgDOBsGaYXv2G92fSmcLh/ 4fD229aWI/XNs7a02eGlv4mhOk4HHJqOdvHLlkD/PJA4giJ3K9/qVmo8vebRSosWnhPy b8nw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=38ZdSROX5+RqupZAHBAG40n0Dr6hAO3z18g5N59SQU4=; b=JpxyDA31WXlRFMZHC5R8UlegLe3C8vDIPBLr5fQhxkM7dErR3mm1ldl38hOP42i0MV mpRpMlRYgGpAP+QXqx9Iz50IxwVe1qmNr5eU5RtrBNDKzQfzkScEly10OAiyIRghXvZ0 +gdmh5x/GiHl2DXoSqk1oyK5qpIckUIdBEYRxF8Emh6qasjvSzjrOHUHMUbXgXt6rW7L buuchHqSjs5/u75MLkLaMoH4hRVM2xThZlaw1lK9R8jqQANJXsLffNZEVCSgr8YjtXeZ Uskw28OhYmctMu6FZqt8New3qUqY0cNAKmII4znvqW0e9eb2clXiYa6FCE6gDA0Ypjo9 BrLA== X-Gm-Message-State: AOAM533KIAFj+bAohOXRzNHbMq+QVM4lRc/IJaV73OPjcwcbXQmyypex bMFZwS3ynCKjVFm/B/xwBw3NeQ== X-Google-Smtp-Source: ABdhPJwnUhzb/0NAh+XYKj3k5xldAGjfpt63mghhlCD2VxFrpw9UxcHdu27TYmnA97GWmVv6IQjoNw== X-Received: by 2002:a05:6402:3713:b0:41d:96f6:8a09 with SMTP id ek19-20020a056402371300b0041d96f68a09mr16881762edb.136.1650368096901; Tue, 19 Apr 2022 04:34:56 -0700 (PDT) Received: from localhost.localdomain (xdsl-188-155-176-92.adslplus.ch. [188.155.176.92]) by smtp.gmail.com with ESMTPSA id ce21-20020a170906b25500b006e89869cbf9sm5608802ejb.105.2022.04.19.04.34.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Apr 2022 04:34:56 -0700 (PDT) From: Krzysztof Kozlowski To: Greg Kroah-Hartman , "Rafael J. Wysocki" Cc: Stuart Yoder , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Dexuan Cui , Bjorn Helgaas , Bjorn Andersson , Mathieu Poirier , Vineeth Vijayan , Peter Oberparleiter , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Andy Gross , linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, NXP Linux Team , linux-arm-kernel@lists.infradead.org, linux-hyperv@vger.kernel.org, linux-pci@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org, linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org, linux-spi@vger.kernel.org, virtualization@lists.linux-foundation.org, Linus Torvalds , Rasmus Villemoes , Andy Shevchenko , Krzysztof Kozlowski Subject: [PATCH v7 06/12] s390/cio: Use driver_set_override() instead of open-coding Date: Tue, 19 Apr 2022 13:34:29 +0200 Message-Id: <20220419113435.246203-7-krzysztof.kozlowski@linaro.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220419113435.246203-1-krzysztof.kozlowski@linaro.org> References: <20220419113435.246203-1-krzysztof.kozlowski@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220419_043501_532935_6E3076D8 X-CRM114-Status: GOOD ( 17.25 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Use a helper to set driver_override to the reduce amount of duplicated code. Make the driver_override field const char, because it is not modified by the core and it matches other subsystems. Signed-off-by: Krzysztof Kozlowski Acked-by: Vineeth Vijayan --- drivers/s390/cio/cio.h | 6 +++++- drivers/s390/cio/css.c | 28 ++++------------------------ 2 files changed, 9 insertions(+), 25 deletions(-) diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h index 1cb9daf9c645..fa8df50bb49e 100644 --- a/drivers/s390/cio/cio.h +++ b/drivers/s390/cio/cio.h @@ -103,7 +103,11 @@ struct subchannel { struct work_struct todo_work; struct schib_config config; u64 dma_mask; - char *driver_override; /* Driver name to force a match */ + /* + * Driver name to force a match. Do not set directly, because core + * frees it. Use driver_set_override() to set or clear it. + */ + const char *driver_override; } __attribute__ ((aligned(8))); DECLARE_PER_CPU_ALIGNED(struct irb, cio_irb); diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index fa8293335077..913b6ddd040b 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -338,31 +338,11 @@ static ssize_t driver_override_store(struct device *dev, const char *buf, size_t count) { struct subchannel *sch = to_subchannel(dev); - char *driver_override, *old, *cp; - - /* We need to keep extra room for a newline */ - if (count >= (PAGE_SIZE - 1)) - return -EINVAL; - - driver_override = kstrndup(buf, count, GFP_KERNEL); - if (!driver_override) - return -ENOMEM; - - cp = strchr(driver_override, '\n'); - if (cp) - *cp = '\0'; - - device_lock(dev); - old = sch->driver_override; - if (strlen(driver_override)) { - sch->driver_override = driver_override; - } else { - kfree(driver_override); - sch->driver_override = NULL; - } - device_unlock(dev); + int ret; - kfree(old); + ret = driver_set_override(dev, &sch->driver_override, buf, count); + if (ret) + return ret; return count; } -- 2.32.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel