From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from 003.mia.mailroute.net (003.mia.mailroute.net [199.89.3.6]) (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 42DEB263F2D for ; Wed, 24 Sep 2025 20:34:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=199.89.3.6 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758746074; cv=none; b=E3SlAOP0AQQZSlAz7IaT3U8XwYBAn5ovlinjokRPDJa7lihNVbFcT9AljqPQVjvZD0Rlubde706zw6557eyAm9TMHT92vUesZt1MgNWl8R9ztUQobL1nshnKoE09EXUjGuMpFLDdAPPAp2TcFT0qsCVa5BMWAvJeAH0ggeXGZKQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758746074; c=relaxed/simple; bh=K3EB5JXPVRNVBmqvLLyzc7UL9V1WItRJTzVmJ2T1+W0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Oy0pzHoV5X7L4ffsNaaAiVXNxAHyzLSKPl/SZAqkFz/4B4sdEgMSZihOJOMOHF99RX8jzIEFS7/2FWQhpfqxQNyGreSRpFYHSPeNNpnUwyvGC7NLOw+I+8a2miz1MlUCHK80gGRT0A5H2b/BErnGIBG1kUH4tRFyP43+ZFYQU4w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=acm.org; spf=pass smtp.mailfrom=acm.org; dkim=pass (2048-bit key) header.d=acm.org header.i=@acm.org header.b=MKD5HC2i; arc=none smtp.client-ip=199.89.3.6 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=acm.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=acm.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=acm.org header.i=@acm.org header.b="MKD5HC2i" Received: from localhost (localhost [127.0.0.1]) by 003.mia.mailroute.net (Postfix) with ESMTP id 4cX7qr1VGSzlgqxk; Wed, 24 Sep 2025 20:34:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=acm.org; h= content-transfer-encoding:mime-version:references:in-reply-to :x-mailer:message-id:date:date:subject:subject:from:from :received:received; s=mr01; t=1758746070; x=1761338071; bh=mWX0p o95CPgj+dpppYnQZ5WJR4Ir6hsKvl9Wi4VORqc=; b=MKD5HC2iQNuR+BLUfnuO1 SsTKrsG1HXGQ7Jm4cax+Efe1Dp5RLdhNojxTIuMVnCDpyRJGOLVNP0pxKTNROIqT Nu5gbHmppTPp8+096NAX5AdqXmX9SZ4DXPwMlHu8Ei9T/9z83qH6LXMRSkxRNH5S SJt4DS6jcfrRyVMhJXeH9iBquEBTM8KQY77ICauRmJ1kQqEH863eTDfZ7DACwygW W7zdD7NaCNYg4hq0YceOwuXDcLf/ITDACoRZy51PtYYq7plhqXZ1ep637EkxS13U MGNBEpgzMOddq3XEoK4+gmBfCHDaTxaYXDPaIgWeBslbY9sLTB2LrL9vAIyFRUTP Q== X-Virus-Scanned: by MailRoute Received: from 003.mia.mailroute.net ([127.0.0.1]) by localhost (003.mia [127.0.0.1]) (mroute_mailscanner, port 10029) with LMTP id DbKfLFo_RsUC; Wed, 24 Sep 2025 20:34:30 +0000 (UTC) Received: from bvanassche.mtv.corp.google.com (unknown [104.135.180.219]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: bvanassche@acm.org) by 003.mia.mailroute.net (Postfix) with ESMTPSA id 4cX7qj3JSMzlgqVP; Wed, 24 Sep 2025 20:34:24 +0000 (UTC) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, Bart Van Assche , "James E.J. Bottomley" , Peter Wang , Avri Altman , Bean Huo Subject: [PATCH v5 22/28] ufs: core: Do not clear driver-private command data Date: Wed, 24 Sep 2025 13:30:41 -0700 Message-ID: <20250924203142.4073403-23-bvanassche@acm.org> X-Mailer: git-send-email 2.51.0.536.g15c5d4f767-goog In-Reply-To: <20250924203142.4073403-1-bvanassche@acm.org> References: <20250924203142.4073403-1-bvanassche@acm.org> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Tell the SCSI core to skip the memset() call that clears driver-private data because __ufshcd_setup_cmd() performs all necessary initialization. Signed-off-by: Bart Van Assche --- drivers/ufs/core/ufshcd.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 1dbb5bdf84f2..a54359289db5 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -2995,6 +2995,15 @@ static void ufshcd_map_queues(struct Scsi_Host *sh= ost) } } =20 +/* + * The only purpose of this function is to make the SCSI core skip the m= emset() + * call for the private command data. + */ +static int ufshcd_init_cmd_priv(struct Scsi_Host *host, struct scsi_cmnd= *cmd) +{ + return 0; +} + /** * ufshcd_queuecommand - main entry point for SCSI requests * @host: SCSI host pointer @@ -9157,6 +9166,7 @@ static const struct scsi_host_template ufshcd_drive= r_template =3D { .name =3D UFSHCD, .proc_name =3D UFSHCD, .map_queues =3D ufshcd_map_queues, + .init_cmd_priv =3D ufshcd_init_cmd_priv, .queuecommand =3D ufshcd_queuecommand, .mq_poll =3D ufshcd_poll, .sdev_init =3D ufshcd_sdev_init,