From patchwork Mon Nov 4 15:23:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jennifer Berringer X-Patchwork-Id: 841276 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C40C41C07FB for ; Mon, 4 Nov 2024 15:24:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730733871; cv=none; b=kljKSfH8lRkUwAd5GkoN8gkY1Aq8YFw+yt9CHHMXu+sDefhQu0H7nV9fParXXBHD5Jbt1erY6aZ7d7o6SHerjVZpWSE3X4VCU73rtxzY7T1JCVS/LlfXARgA7ATIx3aNf0jxTnt8wsctAe3Jf7pZF31aUOYnkTA0DINfbinnbbw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730733871; c=relaxed/simple; bh=gLW0fh8PPs+BaOn5rkVzGVDEOg0uLVSjRbyJUCDLGBI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=oQlAFv80FOEC8/fDp8Kb2kLsU/s4Jp4o4UKz/GGdXdixrTKw66WUTR41MT0cQ1OTvT3pFHboMXqPz0Uqa+WIDW3br/xNoS1U2p5oSsfUsu1uFazx07u3C4XQI2mFsmZ1P4JUZpKWfowd4WD7VtfxIFinw5kjdL6AL6SY0NkP/Uo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=GiJNeKvU; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="GiJNeKvU" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1730733868; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=61B9Jq2TL9i1+pERa497eTJdtZBmCcAzgGgAjZWiZfs=; b=GiJNeKvUi75jzFA+suZqnCqTcDEWhQOQ81TXplqqCMNvTl646pgt369ORIl8bLiFeceXGc cvPZ3e6qdPf9hhoRz2D7TMFHiLQxr0ObFyvF3ah1o/l76rcLmabkyVPS+eBb+7CX5ECedD gnh3itAiVl17JR1ykQOu9McdlUGE/7M= Received: from mail-oo1-f69.google.com (mail-oo1-f69.google.com [209.85.161.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-414-swv6YNAXOFOfTffsYX58Ow-1; Mon, 04 Nov 2024 10:24:27 -0500 X-MC-Unique: swv6YNAXOFOfTffsYX58Ow-1 Received: by mail-oo1-f69.google.com with SMTP id 006d021491bc7-5eb9c053637so3339891eaf.1 for ; Mon, 04 Nov 2024 07:24:27 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730733867; x=1731338667; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=61B9Jq2TL9i1+pERa497eTJdtZBmCcAzgGgAjZWiZfs=; b=pZu7Rv6CUk6QP1xEa5vbG5gElxeYJNz2XMmllpLv4AZhx7Er4n8KZkIse3REP86Axf O9QFel43JGEforFIqBDg/zHGHKI8juAbbxpyJrF/kyaNIRIxPDSbOH7UYEHB8bnQQXs1 GpmrLe/F9N9uQv2Ep9A1OMyG59C6r0BA4hZnHafIzp4MFe3b3Dv5zzdWb5D71nfRaE4c 2nABFotlOO13jOKGPEjHZaMOL0CaWHX87JGHRyrH47WrM3iftOq/0sqJZ76iORPB68cs 747R3M03CPQ5tAzhEmczZU3glrVwoRj/1JjSkZH9A1ulnAyFklVIjk3MF3s4SjRnXejT 7ETg== X-Forwarded-Encrypted: i=1; AJvYcCXv4/pxIJodaynB1Gj6KJV6L271Zc3xPZy0Upkjz/cI5lQKaEhkav9d2W8zWZN9UxvY6iBBbcC4mQ==@vger.kernel.org X-Gm-Message-State: AOJu0Ywbg5Q8IcTqGcx6nRFvYzG1FIMiYYf0ssiMOx6ETAcKvryXGFPq Ivw0mNFCTWZl9Z8BYcKVPL2pXynw4YMhyXSOtIXqexgmm8paJtbGCQz0WGxJ56J4W8gnaqpwuF9 VsCj/uN0V9BjPgOkKru6wRRQXXHB5VWjTvr/TvSnN5B8AvCS6A/HYQhgW X-Received: by 2002:a05:6870:e0ca:b0:278:c6bf:fd34 with SMTP id 586e51a60fabf-29051bdaef8mr27449244fac.27.1730733866955; Mon, 04 Nov 2024 07:24:26 -0800 (PST) X-Google-Smtp-Source: AGHT+IGdz+LHCvEJnf6MEsvrtoajBkoyl90rdROWBh+jGnf8JMCALx0RuCy2tX6Sdh/r1DLTo3sGoQ== X-Received: by 2002:a05:6870:e0ca:b0:278:c6bf:fd34 with SMTP id 586e51a60fabf-29051bdaef8mr27449221fac.27.1730733866650; Mon, 04 Nov 2024 07:24:26 -0800 (PST) Received: from rhdev.redhat.com (2603-9001-3d00-5353-0000-0000-0000-14c1.inf6.spectrum.com. [2603:9001:3d00:5353::14c1]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7189cc59b45sm1980847a34.6.2024.11.04.07.24.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Nov 2024 07:24:25 -0800 (PST) From: Jennifer Berringer To: Srinivas Kandagatla , Sebastian Reichel , Greg Kroah-Hartman , Maxime Ripard Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Jennifer Berringer Subject: [PATCH v3 3/3] power: reset: nvmem-reboot-mode: fix write for small cells Date: Mon, 4 Nov 2024 10:23:12 -0500 Message-ID: <20241104152312.3813601-4-jberring@redhat.com> X-Mailer: git-send-email 2.46.2 In-Reply-To: <20241104152312.3813601-1-jberring@redhat.com> References: <20241104152312.3813601-1-jberring@redhat.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Some devices, such as Qualcomm sa8775p, have an nvmem reboot mode cell that is smaller than 32 bits, which resulted in nvmem_reboot_mode_write() failing. Using nvmem_cell_write_variable_u32() fixes this by writing only the least-significant byte of the magic value when the size specified in device tree is only one byte. Signed-off-by: Jennifer Berringer Reviewed-by: Sebastian Reichel --- drivers/power/reset/nvmem-reboot-mode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/power/reset/nvmem-reboot-mode.c b/drivers/power/reset/nvmem-reboot-mode.c index 41530b70cfc4..b52eb879d1c1 100644 --- a/drivers/power/reset/nvmem-reboot-mode.c +++ b/drivers/power/reset/nvmem-reboot-mode.c @@ -24,7 +24,7 @@ static int nvmem_reboot_mode_write(struct reboot_mode_driver *reboot, nvmem_rbm = container_of(reboot, struct nvmem_reboot_mode, reboot); - ret = nvmem_cell_write(nvmem_rbm->cell, &magic, sizeof(magic)); + ret = nvmem_cell_write_variable_u32(nvmem_rbm->cell, magic); if (ret < 0) dev_err(reboot->dev, "update reboot mode bits failed\n");