From patchwork Mon Jun 25 11:20:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Thumshirn X-Patchwork-Id: 10485587 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 2584B601D5 for ; Mon, 25 Jun 2018 11:22:06 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1909528A3F for ; Mon, 25 Jun 2018 11:22:06 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 16C22289EF; Mon, 25 Jun 2018 11:22:06 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 533EE289EF for ; Mon, 25 Jun 2018 11:21:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932193AbeFYLVe (ORCPT ); Mon, 25 Jun 2018 07:21:34 -0400 Received: from mx2.suse.de ([195.135.220.15]:37415 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752548AbeFYLVG (ORCPT ); Mon, 25 Jun 2018 07:21:06 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext-too.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 6711CAE4F; Mon, 25 Jun 2018 11:21:05 +0000 (UTC) From: Johannes Thumshirn To: "Martin K . Petersen" Cc: Linux Kernel Mailinglist , Linux SCSI Mailinglist , Johannes Thumshirn Subject: [PATCH v3 1/2] scsi: check for equality of result byte values Date: Mon, 25 Jun 2018 13:20:58 +0200 Message-Id: <20180625112059.12872-2-jthumshirn@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20180625112059.12872-1-jthumshirn@suse.de> References: <20180625112059.12872-1-jthumshirn@suse.de> Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When evaluating a SCSI command's result using the field access macros, check for equality of the fields and not if a specific bit is set. This is a preparation patch, for reworking the results field in the SCSI command. Signed-off-by: Johannes Thumshirn Reviewed-by: Christoph Hellwig Reviewed-by: Bart Van Assche --- Changes since v2: - Fixed logical error in sd_spinup_disk() (Bart) Changes since v1: - Reworked braces (Bart) --- drivers/scsi/ch.c | 2 +- drivers/scsi/dc395x.c | 5 ++--- drivers/scsi/scsi.c | 2 +- drivers/scsi/scsi_ioctl.c | 4 ++-- drivers/scsi/scsi_lib.c | 4 ++-- drivers/scsi/scsi_scan.c | 2 +- drivers/scsi/scsi_transport_spi.c | 2 +- drivers/scsi/sd.c | 14 +++++++------- drivers/scsi/ufs/ufshcd.c | 2 +- 9 files changed, 18 insertions(+), 19 deletions(-) diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c index c535c52e72e5..1c5051b1c125 100644 --- a/drivers/scsi/ch.c +++ b/drivers/scsi/ch.c @@ -199,7 +199,7 @@ ch_do_scsi(scsi_changer *ch, unsigned char *cmd, int cmd_len, buflength, &sshdr, timeout * HZ, MAX_RETRIES, NULL); - if (driver_byte(result) & DRIVER_SENSE) { + if (driver_byte(result) == DRIVER_SENSE) { if (debug) scsi_print_sense_hdr(ch->device, ch->name, &sshdr); errno = ch_find_errno(&sshdr); diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c index 60ef8df42b95..1ed2cd82129d 100644 --- a/drivers/scsi/dc395x.c +++ b/drivers/scsi/dc395x.c @@ -3473,9 +3473,8 @@ static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb, /*if( srb->cmd->cmnd[0] == INQUIRY && */ /* (host_byte(cmd->result) == DID_OK || status_byte(cmd->result) & CHECK_CONDITION) ) */ - if ((cmd->result == (DID_OK << 16) - || status_byte(cmd->result) & - CHECK_CONDITION)) { + if ((cmd->result == (DID_OK << 16) || + status_byte(cmd->result) == CHECK_CONDITION)) { if (!dcb->init_tcq_flag) { add_dev(acb, dcb, ptr); dcb->init_tcq_flag = 1; diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 4c60c260c5da..70ef3c39061d 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -162,7 +162,7 @@ void scsi_log_completion(struct scsi_cmnd *cmd, int disposition) (level > 1)) { scsi_print_result(cmd, "Done", disposition); scsi_print_command(cmd); - if (status_byte(cmd->result) & CHECK_CONDITION) + if (status_byte(cmd->result) == CHECK_CONDITION) scsi_print_sense(cmd); if (level > 3) scmd_printk(KERN_INFO, cmd, diff --git a/drivers/scsi/scsi_ioctl.c b/drivers/scsi/scsi_ioctl.c index 0a875491f5a7..cc30fccc1a2e 100644 --- a/drivers/scsi/scsi_ioctl.c +++ b/drivers/scsi/scsi_ioctl.c @@ -100,8 +100,8 @@ static int ioctl_internal_command(struct scsi_device *sdev, char *cmd, SCSI_LOG_IOCTL(2, sdev_printk(KERN_INFO, sdev, "Ioctl returned 0x%x\n", result)); - if ((driver_byte(result) & DRIVER_SENSE) && - (scsi_sense_valid(&sshdr))) { + if (driver_byte(result) == DRIVER_SENSE && + scsi_sense_valid(&sshdr)) { switch (sshdr.sense_key) { case ILLEGAL_REQUEST: if (cmd[0] == ALLOW_MEDIUM_REMOVAL) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 41e9ac9fc138..d53eda6f1fe0 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1031,7 +1031,7 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes) */ if (!level && __ratelimit(&_rs)) { scsi_print_result(cmd, NULL, FAILED); - if (driver_byte(result) & DRIVER_SENSE) + if (driver_byte(result) == DRIVER_SENSE) scsi_print_sense(cmd); scsi_print_command(cmd); } @@ -2555,7 +2555,7 @@ scsi_mode_sense(struct scsi_device *sdev, int dbd, int modepage, * ILLEGAL REQUEST if the code page isn't supported */ if (use_10_for_ms && !scsi_status_is_good(result) && - (driver_byte(result) & DRIVER_SENSE)) { + driver_byte(result) == DRIVER_SENSE) { if (scsi_sense_valid(sshdr)) { if ((sshdr->sense_key == ILLEGAL_REQUEST) && (sshdr->asc == 0x20) && (sshdr->ascq == 0)) { diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 0880d975eed3..78ca63dfba4a 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -614,7 +614,7 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result, * INQUIRY should not yield UNIT_ATTENTION * but many buggy devices do so anyway. */ - if ((driver_byte(result) & DRIVER_SENSE) && + if (driver_byte(result) == DRIVER_SENSE && scsi_sense_valid(&sshdr)) { if ((sshdr.sense_key == UNIT_ATTENTION) && ((sshdr.asc == 0x28) || diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c index 2ca150b16764..40b85b752b79 100644 --- a/drivers/scsi/scsi_transport_spi.c +++ b/drivers/scsi/scsi_transport_spi.c @@ -136,7 +136,7 @@ static int spi_execute(struct scsi_device *sdev, const void *cmd, REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER, 0, NULL); - if (!(driver_byte(result) & DRIVER_SENSE) || + if (driver_byte(result) != DRIVER_SENSE || sshdr->sense_key != UNIT_ATTENTION) break; } diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 9421d9877730..612aa14c1b26 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1635,7 +1635,7 @@ static int sd_sync_cache(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr) if (res) { sd_print_result(sdkp, "Synchronize Cache(10) failed", res); - if (driver_byte(res) & DRIVER_SENSE) + if (driver_byte(res) == DRIVER_SENSE) sd_print_sense_hdr(sdkp, sshdr); /* we need to evaluate the error return */ @@ -1737,8 +1737,8 @@ static int sd_pr_command(struct block_device *bdev, u8 sa, result = scsi_execute_req(sdev, cmd, DMA_TO_DEVICE, &data, sizeof(data), &sshdr, SD_TIMEOUT, SD_MAX_RETRIES, NULL); - if ((driver_byte(result) & DRIVER_SENSE) && - (scsi_sense_valid(&sshdr))) { + if (driver_byte(result) == DRIVER_SENSE && + scsi_sense_valid(&sshdr)) { sdev_printk(KERN_INFO, sdev, "PR command failed: %d\n", result); scsi_print_sense_hdr(sdev, NULL, &sshdr); } @@ -2095,10 +2095,10 @@ sd_spinup_disk(struct scsi_disk *sdkp) retries++; } while (retries < 3 && (!scsi_status_is_good(the_result) || - ((driver_byte(the_result) & DRIVER_SENSE) && + ((driver_byte(the_result) == DRIVER_SENSE) && sense_valid && sshdr.sense_key == UNIT_ATTENTION))); - if ((driver_byte(the_result) & DRIVER_SENSE) == 0) { + if (driver_byte(the_result) != DRIVER_SENSE) { /* no sense, TUR either succeeded or failed * with a status error */ if(!spintime && !scsi_status_is_good(the_result)) { @@ -2224,7 +2224,7 @@ static void read_capacity_error(struct scsi_disk *sdkp, struct scsi_device *sdp, struct scsi_sense_hdr *sshdr, int sense_valid, int the_result) { - if (driver_byte(the_result) & DRIVER_SENSE) + if (driver_byte(the_result) == DRIVER_SENSE) sd_print_sense_hdr(sdkp, sshdr); else sd_printk(KERN_NOTICE, sdkp, "Sense not available.\n"); @@ -3490,7 +3490,7 @@ static int sd_start_stop_device(struct scsi_disk *sdkp, int start) SD_TIMEOUT, SD_MAX_RETRIES, 0, RQF_PM, NULL); if (res) { sd_print_result(sdkp, "Start/Stop Unit failed", res); - if (driver_byte(res) & DRIVER_SENSE) + if (driver_byte(res) == DRIVER_SENSE) sd_print_sense_hdr(sdkp, &sshdr); if (scsi_sense_valid(&sshdr) && /* 0x3a is medium not present */ diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 350f859625f6..3560185002da 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -7303,7 +7303,7 @@ static int ufshcd_set_dev_pwr_mode(struct ufs_hba *hba, sdev_printk(KERN_WARNING, sdp, "START_STOP failed for power mode: %d, result %x\n", pwr_mode, ret); - if (driver_byte(ret) & DRIVER_SENSE) + if (driver_byte(ret) == DRIVER_SENSE) scsi_print_sense_hdr(sdp, NULL, &sshdr); }