From patchwork Wed Nov 6 09:57:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Kai_M=C3=A4kisara_=28Kolumbus=29?= X-Patchwork-Id: 841301 Received: from fgw20-4.mail.saunalahti.fi (fgw20-4.mail.saunalahti.fi [62.142.5.107]) (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 702FC1DD0C9 for ; Wed, 6 Nov 2024 09:58:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=62.142.5.107 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730887092; cv=none; b=PbplX7x7Jz9PUZoZ156kc4ecI/NH2qLDIwhWWztGBes0edGKTW4+3emB8P8tezxpR474bRP6mL/s8oNCKExUo5xr7V1IyglnmC3xbK4XPFBOP09Whz4eqL9CEUxvSMa1WOkM4LqvwT6b8wnAf8NRJTCD3w4AMSb+Qda8MR4+O90= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730887092; c=relaxed/simple; bh=x40R41wS28JHaszElwyf6IwMxjE2egr5A3XtFUi/S5U=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=T0ICXRdURdF/I5qy3cNg2RyL+H7nuUWKdvcXijUbuwHKvKNdmmRJzjBFqb/6BhnqzVEguojWJU4OREqCCKVd5DUxV+Frnb5hjyQ3DeYK9ISYUvZNv9VT2QWih81XiQZPdcY8DGslXc37iw+gKQkm0GgXHR8HDHleKZjNA7xej2I= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=kolumbus.fi; spf=pass smtp.mailfrom=kolumbus.fi; dkim=pass (2048-bit key) header.d=kolumbus.fi header.i=@kolumbus.fi header.b=oX8qFbln; arc=none smtp.client-ip=62.142.5.107 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=kolumbus.fi Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kolumbus.fi Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kolumbus.fi header.i=@kolumbus.fi header.b="oX8qFbln" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kolumbus.fi; s=elisa1; h=content-transfer-encoding:mime-version:references:in-reply-to:message-id:date: subject:cc:to:from:from:to:cc:reply-to:subject:date:in-reply-to:references: list-archive:list-subscribe:list-unsubscribe:content-type: content-transfer-encoding:message-id; bh=QDqJYncT/PdMgfRzyz2Q49vpB2LdWEH5W9QQkI2VqQY=; b=oX8qFblnb3kMOL9EVpY8oZN2AZQ6tnVpTn7ohnhDF3RSb6TAzdZIf8w7V97NIYtzUTBbRYkLCwKQe 4m2VXOl1h/8yYgFsdNaS+mOknBt1t3u6p57pERmfH2SX+VgVcW5qCnrMS9Q7Bk7DuFkuP2G3YDmdj/ KAunCj35oDDbf+KBuF6VgP/xI+kMZDY3yNaAFfyR4BdkSrQISnAPjyyjpkwejz9coapjN6dFm4AF73 nsjRmvl/5VO8Vkwr7g9SCuYrdqtgvgRWbA91D0Bd20ZFrThTwB3/K9MrRTBuy3Cf/BfB8t6l4Jpktg rm9YXwLwwVXgwmXc2YFqC7J1D/x7+1g== Received: from kaipn1.makisara.private (85-156-116-90.elisa-laajakaista.fi [85.156.116.90]) by fgw20.mail.saunalahti.fi (Halon) with ESMTPSA id 982c1968-9c25-11ef-9ac8-005056bd6ce9; Wed, 06 Nov 2024 11:57:55 +0200 (EET) From: =?utf-8?q?Kai_M=C3=A4kisara?= To: linux-scsi@vger.kernel.org, jmeneghi@redhat.com Cc: martin.petersen@oracle.com, James.Bottomley@HansenPartnership.com, loberman@redhat.com, =?utf-8?q?Kai_M=C3=A4kisara?= Subject: [PATCH v2 3/3] scsi: st: New session only when Unit Attention for new tape Date: Wed, 6 Nov 2024 11:57:23 +0200 Message-ID: <20241106095723.63254-4-Kai.Makisara@kolumbus.fi> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241106095723.63254-1-Kai.Makisara@kolumbus.fi> References: <20241106095723.63254-1-Kai.Makisara@kolumbus.fi> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Currently the code starts new tape session when any Unit Attention (UA) is seen when opening the device. This leads to incorrectly clearing pos_unknown when the UA is for reset. Set new session only when the UA is for a new tape. --- drivers/scsi/st.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c index c9038284bc89..e8ef27d7ef61 100644 --- a/drivers/scsi/st.c +++ b/drivers/scsi/st.c @@ -991,7 +991,10 @@ static int test_ready(struct scsi_tape *STp, int do_wait) scode = cmdstatp->sense_hdr.sense_key; if (scode == UNIT_ATTENTION) { /* New media? */ - new_session = 1; + if (cmdstatp->sense_hdr.asc == 0x28) { /* New media */ + new_session = 1; + DEBC_printk(STp, "New tape session."); + } if (attentions < MAX_ATTENTIONS) { attentions++; continue;