From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ED6988482 for ; Wed, 21 Jun 2023 06:44:46 +0000 (UTC) Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-5706641dda9so73687167b3.3 for ; Tue, 20 Jun 2023 23:44:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1687329886; x=1689921886; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=1HNFofEgftQ/0viD8hP2C9StxNG8tEEj8VIgof4alao=; b=NwyrXz6ubgbYeu5se4OnmTGRl/ECZnN/7JXUGfb3yfJHIleuEhl/vBOWZdfzMER6Gx BiPVvWA9Zp+4QaWrnn9OAzgPxD8EtCxqeits8Wu66pkUEHOGaiwDQhRW/J+yNdDMsAlF y8tREQZuazgzoLW1lJOdMAgC3jROf3yU6f6/ooGUM/ed0cdMK69TTIuHL8pi8+hdgxg4 sMmuWLwUHHqnGxYMofKOeij/4hhaVO7yrHVtyCzzPIP3fz7HtdUP47sUq7HkSrrLt0u4 AKIy0MweTpJJB47zOUsszP8BDsLy6b518MCCeqGT4lRkc+iJWu0D/oSX+S9wtNgHByFL IhfA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687329886; x=1689921886; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=1HNFofEgftQ/0viD8hP2C9StxNG8tEEj8VIgof4alao=; b=Eg1XkGT1CDl0cgo6CG5MFHVSZ1FX7kFiq7RY4juuhu+YoEexCmNaUIsFas9StfBKev 24lORR9HWYZ71Wlke6gaq8bMW3Edqj2hAm4pZKqTEZdxR7rl6UEY1jcsjDwZzFr4jlen NuOmT8Zlig1pRhwvAXgHm4amCuE9l1uXlc8J+O5fru/HJxIAVlvB2bU+67ts1HFqn0kK ForSPwT8gXxYPp0HSNHYAcCLVI9x4nzlZBM0ncRX+6HdmdC9ef+1hVXK44gRdUBHaOsc mRJlfGwn8guDb6xJ5W/YoaPGl4JwffP0l0Ubof4a6ZQi78ADxk64w+A+T+SiGh6khDxJ F75w== X-Gm-Message-State: AC+VfDxR4EdTV4bklbmjsZnruQvMq//LNF6pdtUilMfiTRnZ/1H0if2Y DakyseiExaq6SKSX/7hTs18oVZpKWy+M X-Google-Smtp-Source: ACHHUZ7QGJG0D7z7/43AEtJ6RwcS6kiSb09I0mWwsorRzmgb/ZEaTmvkUNbdIb93dJYPVoc71NOppCwfYFjW X-Received: from mshavit.ntc.corp.google.com ([2401:fa00:95:20c:384f:f7da:c61d:5a3e]) (user=mshavit job=sendgmr) by 2002:a81:bc4d:0:b0:56f:2841:aa24 with SMTP id b13-20020a81bc4d000000b0056f2841aa24mr6215155ywl.10.1687329885894; Tue, 20 Jun 2023 23:44:45 -0700 (PDT) Date: Wed, 21 Jun 2023 14:37:23 +0800 In-Reply-To: <20230621063825.268890-1-mshavit@google.com> Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20230621063825.268890-1-mshavit@google.com> X-Mailer: git-send-email 2.41.0.162.gfafddb0af9-goog Message-ID: <20230621063825.268890-12-mshavit@google.com> Subject: [PATCH v4 11/13] iommu/arm-smmu-v3-sva: Clean unused iommu_sva From: Michael Shavit To: Will Deacon , Robin Murphy , Joerg Roedel Cc: Michael Shavit , jean-philippe@linaro.org, nicolinc@nvidia.com, jgg@nvidia.com, baolu.lu@linux.intel.com, linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" The __arm_smmu_sva_bind function returned an unused iommu_sva handle that can be removed. Signed-off-by: Michael Shavit --- .../iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c index 20301d0a2c0b0..650c9c9ad52f1 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c @@ -25,7 +25,6 @@ struct arm_smmu_mmu_notifier { #define mn_to_smmu(mn) container_of(mn, struct arm_smmu_mmu_notifier, mn) struct arm_smmu_bond { - struct iommu_sva sva; struct mm_struct *mm; struct arm_smmu_mmu_notifier *smmu_mn; struct list_head list; @@ -364,8 +363,7 @@ static void arm_smmu_mmu_notifier_put(struct arm_smmu_mmu_notifier *smmu_mn) arm_smmu_free_shared_cd(cd); } -static struct iommu_sva * -__arm_smmu_sva_bind(struct device *dev, struct mm_struct *mm) +static int __arm_smmu_sva_bind(struct device *dev, struct mm_struct *mm) { int ret; struct arm_smmu_bond *bond; @@ -374,14 +372,13 @@ __arm_smmu_sva_bind(struct device *dev, struct mm_struct *mm) struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); if (!master || !master->sva_enabled) - return ERR_PTR(-ENODEV); + return -ENODEV; bond = kzalloc(sizeof(*bond), GFP_KERNEL); if (!bond) - return ERR_PTR(-ENOMEM); + return -ENOMEM; bond->mm = mm; - bond->sva.dev = dev; bond->smmu_mn = arm_smmu_mmu_notifier_get(smmu_domain, mm); if (IS_ERR(bond->smmu_mn)) { @@ -390,11 +387,11 @@ __arm_smmu_sva_bind(struct device *dev, struct mm_struct *mm) } list_add(&bond->list, &master->bonds); - return &bond->sva; + return 0; err_free_bond: kfree(bond); - return ERR_PTR(ret); + return ret; } bool arm_smmu_sva_supported(struct arm_smmu_device *smmu) @@ -572,13 +569,10 @@ static int arm_smmu_sva_set_dev_pasid(struct iommu_domain *domain, struct device *dev, ioasid_t id) { int ret = 0; - struct iommu_sva *handle; struct mm_struct *mm = domain->mm; mutex_lock(&sva_lock); - handle = __arm_smmu_sva_bind(dev, mm); - if (IS_ERR(handle)) - ret = PTR_ERR(handle); + ret = __arm_smmu_sva_bind(dev, mm); mutex_unlock(&sva_lock); return ret; -- 2.41.0.162.gfafddb0af9-goog