From 76aaf87b4cdc7f7115a32e4fda88310d42ce7fde Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 23 Feb 2017 16:02:36 +0100 Subject: scsi: merge __scsi_execute into scsi_execute All but one caller want the decoded sense header, so offer the existing __scsi_execute helper as the public scsi_execute API to simply the callers. Signed-off-by: Christoph Hellwig Signed-off-by: Martin K. Petersen --- drivers/scsi/cxlflash/superpipe.c | 8 +++---- drivers/scsi/cxlflash/vlun.c | 4 ++-- drivers/scsi/scsi_lib.c | 48 +++++++++++++++++---------------------- drivers/scsi/scsi_transport_spi.c | 24 ++++++++------------ drivers/scsi/sr_ioctl.c | 19 +++------------- 5 files changed, 39 insertions(+), 64 deletions(-) (limited to 'drivers/scsi') diff --git a/drivers/scsi/cxlflash/superpipe.c b/drivers/scsi/cxlflash/superpipe.c index 90869cee2b20..5b812ed87f22 100644 --- a/drivers/scsi/cxlflash/superpipe.c +++ b/drivers/scsi/cxlflash/superpipe.c @@ -305,6 +305,7 @@ static int read_cap16(struct scsi_device *sdev, struct llun_info *lli) struct cxlflash_cfg *cfg = shost_priv(sdev->host); struct device *dev = &cfg->dev->dev; struct glun_info *gli = lli->parent; + struct scsi_sense_hdr sshdr; u8 *cmd_buf = NULL; u8 *scsi_cmd = NULL; u8 *sense_buf = NULL; @@ -332,7 +333,8 @@ retry: /* Drop the ioctl read semahpore across lengthy call */ up_read(&cfg->ioctl_rwsem); result = scsi_execute(sdev, scsi_cmd, DMA_FROM_DEVICE, cmd_buf, - CMD_BUFSIZE, sense_buf, to, CMD_RETRIES, 0, NULL); + CMD_BUFSIZE, sense_buf, &sshdr, to, CMD_RETRIES, + 0, 0, NULL); down_read(&cfg->ioctl_rwsem); rc = check_state(cfg); if (rc) { @@ -345,10 +347,6 @@ retry: if (driver_byte(result) == DRIVER_SENSE) { result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ if (result & SAM_STAT_CHECK_CONDITION) { - struct scsi_sense_hdr sshdr; - - scsi_normalize_sense(sense_buf, SCSI_SENSE_BUFFERSIZE, - &sshdr); switch (sshdr.sense_key) { case NO_SENSE: case RECOVERED_ERROR: diff --git a/drivers/scsi/cxlflash/vlun.c b/drivers/scsi/cxlflash/vlun.c index 8fcc804dbef9..7aa06ef229fd 100644 --- a/drivers/scsi/cxlflash/vlun.c +++ b/drivers/scsi/cxlflash/vlun.c @@ -453,8 +453,8 @@ static int write_same16(struct scsi_device *sdev, /* Drop the ioctl read semahpore across lengthy call */ up_read(&cfg->ioctl_rwsem); result = scsi_execute(sdev, scsi_cmd, DMA_TO_DEVICE, cmd_buf, - CMD_BUFSIZE, sense_buf, to, CMD_RETRIES, - 0, NULL); + CMD_BUFSIZE, sense_buf, NULL, to, + CMD_RETRIES, 0, 0, NULL); down_read(&cfg->ioctl_rwsem); rc = check_state(cfg); if (rc) { diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 5f661486cf6e..b0cb3e0713f3 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -213,7 +213,26 @@ void scsi_queue_insert(struct scsi_cmnd *cmd, int reason) __scsi_queue_insert(cmd, reason, 1); } -static int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, + +/** + * scsi_execute - insert request and wait for the result + * @sdev: scsi device + * @cmd: scsi command + * @data_direction: data direction + * @buffer: data buffer + * @bufflen: len of buffer + * @sense: optional sense buffer + * @sshdr: optional decoded sense header + * @timeout: request timeout in seconds + * @retries: number of times to retry request + * @flags: flags for ->cmd_flags + * @rq_flags: flags for ->rq_flags + * @resid: optional residual length + * + * returns the req->errors value which is the scsi_cmnd result + * field. + */ +int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, int data_direction, void *buffer, unsigned bufflen, unsigned char *sense, struct scsi_sense_hdr *sshdr, int timeout, int retries, u64 flags, req_flags_t rq_flags, @@ -268,31 +287,6 @@ static int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, return ret; } - -/** - * scsi_execute - insert request and wait for the result - * @sdev: scsi device - * @cmd: scsi command - * @data_direction: data direction - * @buffer: data buffer - * @bufflen: len of buffer - * @sense: optional sense buffer - * @timeout: request timeout in seconds - * @retries: number of times to retry request - * @flags: or into request flags; - * @resid: optional residual length - * - * returns the req->errors value which is the scsi_cmnd result - * field. - */ -int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, - int data_direction, void *buffer, unsigned bufflen, - unsigned char *sense, int timeout, int retries, u64 flags, - int *resid) -{ - return __scsi_execute(sdev, cmd, data_direction, buffer, bufflen, sense, - NULL, timeout, retries, flags, 0, resid); -} EXPORT_SYMBOL(scsi_execute); int scsi_execute_req_flags(struct scsi_device *sdev, const unsigned char *cmd, @@ -300,7 +294,7 @@ int scsi_execute_req_flags(struct scsi_device *sdev, const unsigned char *cmd, struct scsi_sense_hdr *sshdr, int timeout, int retries, int *resid, u64 flags, req_flags_t rq_flags) { - return __scsi_execute(sdev, cmd, data_direction, buffer, bufflen, + return scsi_execute(sdev, cmd, data_direction, buffer, bufflen, NULL, sshdr, timeout, retries, flags, rq_flags, resid); } diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c index 319868f3f674..d0219e36080c 100644 --- a/drivers/scsi/scsi_transport_spi.c +++ b/drivers/scsi/scsi_transport_spi.c @@ -123,25 +123,21 @@ static int spi_execute(struct scsi_device *sdev, const void *cmd, { int i, result; unsigned char sense[SCSI_SENSE_BUFFERSIZE]; + struct scsi_sense_hdr sshdr_tmp; + + if (!sshdr) + sshdr = &sshdr_tmp; for(i = 0; i < DV_RETRIES; i++) { - result = scsi_execute(sdev, cmd, dir, buffer, bufflen, - sense, DV_TIMEOUT, /* retries */ 1, + result = scsi_execute(sdev, cmd, dir, buffer, bufflen, sense, + sshdr, DV_TIMEOUT, /* retries */ 1, REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER, - NULL); - if (driver_byte(result) & DRIVER_SENSE) { - struct scsi_sense_hdr sshdr_tmp; - if (!sshdr) - sshdr = &sshdr_tmp; - - if (scsi_normalize_sense(sense, SCSI_SENSE_BUFFERSIZE, - sshdr) - && sshdr->sense_key == UNIT_ATTENTION) - continue; - } - break; + 0, NULL); + if (!(driver_byte(result) & DRIVER_SENSE) || + sshdr->sense_key != UNIT_ATTENTION) + break; } return result; } diff --git a/drivers/scsi/sr_ioctl.c b/drivers/scsi/sr_ioctl.c index dfffdf63e44c..4610c8c5693f 100644 --- a/drivers/scsi/sr_ioctl.c +++ b/drivers/scsi/sr_ioctl.c @@ -187,30 +187,19 @@ int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc) struct scsi_device *SDev; struct scsi_sense_hdr sshdr; int result, err = 0, retries = 0; - struct request_sense *sense = cgc->sense; SDev = cd->device; - if (!sense) { - sense = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL); - if (!sense) { - err = -ENOMEM; - goto out; - } - } - retry: if (!scsi_block_when_processing_errors(SDev)) { err = -ENODEV; goto out; } - memset(sense, 0, sizeof(*sense)); result = scsi_execute(SDev, cgc->cmd, cgc->data_direction, - cgc->buffer, cgc->buflen, (char *)sense, - cgc->timeout, IOCTL_RETRIES, 0, NULL); - - scsi_normalize_sense((char *)sense, sizeof(*sense), &sshdr); + cgc->buffer, cgc->buflen, + (unsigned char *)cgc->sense, &sshdr, + cgc->timeout, IOCTL_RETRIES, 0, 0, NULL); /* Minimal error checking. Ignore cases we know about, and report the rest. */ if (driver_byte(result) != 0) { @@ -261,8 +250,6 @@ int sr_do_ioctl(Scsi_CD *cd, struct packet_command *cgc) /* Wake up a process waiting for device */ out: - if (!cgc->sense) - kfree(sense); cgc->stat = err; return err; } -- cgit v1.2.3