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=-10.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 5A3F0C433E0 for ; Mon, 29 Jun 2020 21:22:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3555F2158C for ; Mon, 29 Jun 2020 21:22:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="mExcRW14" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730700AbgF2VWQ (ORCPT ); Mon, 29 Jun 2020 17:22:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40016 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729539AbgF2Swm (ORCPT ); Mon, 29 Jun 2020 14:52:42 -0400 Received: from mail-wr1-x442.google.com (mail-wr1-x442.google.com [IPv6:2a00:1450:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E7940C02E2CE for ; Mon, 29 Jun 2020 07:04:54 -0700 (PDT) Received: by mail-wr1-x442.google.com with SMTP id f18so8626116wrs.0 for ; Mon, 29 Jun 2020 07:04:54 -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=eCTcGJHtSmaPBnZUOms/69xtZG01NEK1s+KL4aDek/0=; b=mExcRW14yTqdrE+npdERL83UBRuofRErdA5/zgO3vl9BxrfDKDkoQbWF20CyrH2IUS 8UGyTrSsNjnnKbfg/JmvpnQmPPE+9II9m4mQ1g3abKPLo/CHKonJEB9B2KyTk40TL7zZ wJelDv5eKmyMI8SV1t20g5eXswq7iBjDP7X11tsetirsv9dUe16SDowmC7QpfiHTMG+x XvDbt0wa3fLD8MJ8wtrAGo1AQyLuSl7AIsI5m7XxErYSsKc6UKyp0O771NkG9DgFhEm6 NN/AlfVVuxiSc3efXqK8IquWgOi6l6dGg0dGxvvifTk7+/navEyuFGkz6eRr2WYZVKZy IMow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=eCTcGJHtSmaPBnZUOms/69xtZG01NEK1s+KL4aDek/0=; b=IWBdMMwAN+gjSGQrrv+xZmZfCFW2KDImMpRZ1EA8zvgVUlBvIm8oQXDcTH6kDLk8WH D+0PHXmjWEBI4q45Z2VAxYD8An+HnnHw4R/kxknyeGh9lEtLMjdqg/3yg1pqWiyEfHbg zWivR/vEGpzmoK5zx+ZR2AQfhosR32bvhZUpcUiEdisnlegG3I8zxBEuFvyByapm2l7E jvEyvuW8hQm8E44DuOyHHzqPGGvPVNCUCQOeAPwJ+LOYjwqTfhA6o426EU+bjMaH6JSr kNQRwxp6GeYcThpEgA60n1chrQ6jWhZT2/r1N6J4dqEzLpcz5IWQcFFetLAmELhWhHQ1 qgrQ== X-Gm-Message-State: AOAM531OhwK+SClB/+COtbTJHh1w/3v1CRVT5MkbCFqjlTlI2KzuQtpp qBGBXlm/5XmvqeboJRg8XT9f7Q== X-Google-Smtp-Source: ABdhPJygUbnUrJAbW4jXvLREPQuFQ/kwh1F2Ffox4kxTw9ORCJFsMC95XOvyQ46XY78Axn7iLPLN1w== X-Received: by 2002:a5d:6846:: with SMTP id o6mr17264874wrw.370.1593439493674; Mon, 29 Jun 2020 07:04:53 -0700 (PDT) Received: from localhost.localdomain ([2.27.35.144]) by smtp.gmail.com with ESMTPSA id p14sm15394928wrj.14.2020.06.29.07.04.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Jun 2020 07:04:53 -0700 (PDT) From: Lee Jones To: arnd@arndb.de, gregkh@linuxfoundation.org Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Lee Jones , Oded Gabbay , Tomer Tayar Subject: [PATCH 06/20] misc: habanalabs: goya: Omit pointless check ensuring addr is >=0 Date: Mon, 29 Jun 2020 15:04:28 +0100 Message-Id: <20200629140442.1043957-7-lee.jones@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200629140442.1043957-1-lee.jones@linaro.org> References: <20200629140442.1043957-1-lee.jones@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Seeing as 'addr' is unsigned, it would be impossible for the assigned value to be anything other than zero or positive. Squashes the following W=1 warnings: drivers/misc/habanalabs/goya/goya.c: In function ‘goya_debugfs_read32’: drivers/misc/habanalabs/goya/goya.c:3945:19: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 3945 | } else if ((addr >= DRAM_PHYS_BASE) && | ^~ drivers/misc/habanalabs/goya/goya.c: In function ‘goya_debugfs_write32’: drivers/misc/habanalabs/goya/goya.c:4002:19: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 4002 | } else if ((addr >= DRAM_PHYS_BASE) && | ^~ drivers/misc/habanalabs/goya/goya.c: In function ‘goya_debugfs_read64’: drivers/misc/habanalabs/goya/goya.c:4047:19: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 4047 | } else if ((addr >= DRAM_PHYS_BASE) && | ^~ drivers/misc/habanalabs/goya/goya.c: In function ‘goya_debugfs_write64’: drivers/misc/habanalabs/goya/goya.c:4091:19: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 4091 | } else if ((addr >= DRAM_PHYS_BASE) && | ^~ drivers/misc/habanalabs/pci.c:328: warning: Excess function parameter 'dma_mask' description in 'hl_pci_set_dma_mask' drivers/misc/habanalabs/goya/goya_coresight.c: In function ‘goya_debug_coresight’: drivers/misc/habanalabs/goya/goya_coresight.c:643:6: warning: variable ‘val’ set but not used [-Wunused-but-set-variable] 643 | u32 val; | ^~~ Cc: Oded Gabbay Cc: Tomer Tayar Signed-off-by: Lee Jones --- drivers/misc/habanalabs/goya/goya.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c index 0d2952bb58dfb..a4a20e27ed3b4 100644 --- a/drivers/misc/habanalabs/goya/goya.c +++ b/drivers/misc/habanalabs/goya/goya.c @@ -3942,8 +3942,7 @@ static int goya_debugfs_read32(struct hl_device *hdev, u64 addr, u32 *val) *val = readl(hdev->pcie_bar[SRAM_CFG_BAR_ID] + (addr - SRAM_BASE_ADDR)); - } else if ((addr >= DRAM_PHYS_BASE) && - (addr < DRAM_PHYS_BASE + hdev->asic_prop.dram_size)) { + } else if (addr < DRAM_PHYS_BASE + hdev->asic_prop.dram_size) { u64 bar_base_addr = DRAM_PHYS_BASE + (addr & ~(prop->dram_pci_bar_size - 0x1ull)); @@ -3999,8 +3998,7 @@ static int goya_debugfs_write32(struct hl_device *hdev, u64 addr, u32 val) writel(val, hdev->pcie_bar[SRAM_CFG_BAR_ID] + (addr - SRAM_BASE_ADDR)); - } else if ((addr >= DRAM_PHYS_BASE) && - (addr < DRAM_PHYS_BASE + hdev->asic_prop.dram_size)) { + } else if (addr < DRAM_PHYS_BASE + hdev->asic_prop.dram_size) { u64 bar_base_addr = DRAM_PHYS_BASE + (addr & ~(prop->dram_pci_bar_size - 0x1ull)); @@ -4044,9 +4042,8 @@ static int goya_debugfs_read64(struct hl_device *hdev, u64 addr, u64 *val) *val = readq(hdev->pcie_bar[SRAM_CFG_BAR_ID] + (addr - SRAM_BASE_ADDR)); - } else if ((addr >= DRAM_PHYS_BASE) && - (addr <= - DRAM_PHYS_BASE + hdev->asic_prop.dram_size - sizeof(u64))) { + } else if (addr <= + DRAM_PHYS_BASE + hdev->asic_prop.dram_size - sizeof(u64)) { u64 bar_base_addr = DRAM_PHYS_BASE + (addr & ~(prop->dram_pci_bar_size - 0x1ull)); @@ -4088,9 +4085,8 @@ static int goya_debugfs_write64(struct hl_device *hdev, u64 addr, u64 val) writeq(val, hdev->pcie_bar[SRAM_CFG_BAR_ID] + (addr - SRAM_BASE_ADDR)); - } else if ((addr >= DRAM_PHYS_BASE) && - (addr <= - DRAM_PHYS_BASE + hdev->asic_prop.dram_size - sizeof(u64))) { + } else if (addr <= + DRAM_PHYS_BASE + hdev->asic_prop.dram_size - sizeof(u64)) { u64 bar_base_addr = DRAM_PHYS_BASE + (addr & ~(prop->dram_pci_bar_size - 0x1ull)); -- 2.25.1 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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org 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(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Jun 2020 07:04:53 -0700 (PDT) From: Lee Jones To: arnd@arndb.de, gregkh@linuxfoundation.org Subject: [PATCH 06/20] misc: habanalabs: goya: Omit pointless check ensuring addr is >=0 Date: Mon, 29 Jun 2020 15:04:28 +0100 Message-Id: <20200629140442.1043957-7-lee.jones@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200629140442.1043957-1-lee.jones@linaro.org> References: <20200629140442.1043957-1-lee.jones@linaro.org> MIME-Version: 1.0 X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Oded Gabbay , Tomer Tayar , Lee Jones , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: 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