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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 2B8A9C7618F for ; Wed, 24 Jul 2019 19:36:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E921A20659 for ; Wed, 24 Jul 2019 19:36:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563996983; bh=LOARK0T404+azY1suHxq6Tt9I+LxkICd8FbLI+35sfo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=oZAcNqukQpZGOQ8gIj0dQWbsyU7CENzdeA4sYWzM1NS9+3PotedqFNZDc8xA5Esni bJIO0ZWKuYCHlQwhz2IhA8SXqhzPSuK2/8QNttTFlGzJXd6cGx2S06Ze+OI4FGIptT /8B0xW1oD9SJ4EQg9BEXckQII7V3GVYUTyaV0oM0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726622AbfGXTgV (ORCPT ); Wed, 24 Jul 2019 15:36:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:35986 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388989AbfGXTgU (ORCPT ); Wed, 24 Jul 2019 15:36:20 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 668A020659; Wed, 24 Jul 2019 19:36:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563996979; bh=LOARK0T404+azY1suHxq6Tt9I+LxkICd8FbLI+35sfo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KW8aMPEubHhIRyFzKtjGiKYKLO9HsXrUmToEN07lggzidWySsNb8M2scXYu3Nwk/Y NE0KA2dL0S2pSHyQZUKAdhYYl9tjfZ+d7IzGh6MTGdZDG5/+CoO8uc7kwKGqNAc2qX yzjBPVi6cn2FyyJadu1o8ecI0lJ54fnML7d5CCfE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Michael Schmitz , Finn Thain , Stan Johnson , "Martin K. Petersen" Subject: [PATCH 5.2 255/413] Revert "scsi: ncr5380: Increase register polling limit" Date: Wed, 24 Jul 2019 21:19:06 +0200 Message-Id: <20190724191754.201080120@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190724191735.096702571@linuxfoundation.org> References: <20190724191735.096702571@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Finn Thain commit 25fcf94a2fa89dd3e73e965ebb0b38a2a4f72aa4 upstream. This reverts commit 4822827a69d7cd3bc5a07b7637484ebd2cf88db6. The purpose of that commit was to suppress a timeout warning message which appeared to be caused by target latency. But suppressing the warning is undesirable as the warning may indicate a messed up transfer count. Another problem with that commit is that 15 ms is too long to keep interrupts disabled as interrupt latency can cause system clock drift and other problems. Cc: Michael Schmitz Cc: stable@vger.kernel.org Fixes: 4822827a69d7 ("scsi: ncr5380: Increase register polling limit") Signed-off-by: Finn Thain Tested-by: Stan Johnson Tested-by: Michael Schmitz Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/NCR5380.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/scsi/NCR5380.h +++ b/drivers/scsi/NCR5380.h @@ -235,7 +235,7 @@ struct NCR5380_cmd { #define NCR5380_PIO_CHUNK_SIZE 256 /* Time limit (ms) to poll registers when IRQs are disabled, e.g. during PDMA */ -#define NCR5380_REG_POLL_TIME 15 +#define NCR5380_REG_POLL_TIME 10 static inline struct scsi_cmnd *NCR5380_to_scmd(struct NCR5380_cmd *ncmd_ptr) {