diff options
| -rw-r--r-- | drivers/scsi/sg.c | 33 |
1 files changed, 5 insertions, 28 deletions
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index 07bd6833130..df8bf67b171 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -188,7 +188,6 @@ static ssize_t sg_new_write(Sg_fd *sfp, struct file *file, int read_only, Sg_request **o_srp); static int sg_common_write(Sg_fd * sfp, Sg_request * srp, unsigned char *cmnd, int timeout, int blocking); -static int sg_read_xfer(Sg_request * srp); static int sg_read_oxfer(Sg_request * srp, char __user *outp, int num_read_xfer); static void sg_remove_scat(Sg_scatter_hold * schp); static void sg_build_reserve(Sg_fd * sfp, int req_size); @@ -523,8 +522,11 @@ sg_new_read(Sg_fd * sfp, char __user *buf, size_t count, Sg_request * srp) err = -EFAULT; goto err_out; } - err = sg_read_xfer(srp); - err_out: + if (srp->bio) { + err = blk_rq_unmap_user(srp->bio); + srp->bio = NULL; + } +err_out: sg_finish_rem_req(srp); return (0 == err) ? count : err; } @@ -1832,31 +1834,6 @@ sg_remove_scat(Sg_scatter_hold * schp) } static int -sg_read_xfer(Sg_request * srp) -{ - sg_io_hdr_t *hp = &srp->header; - Sg_scatter_hold *schp = &srp->data; - int num_xfer = 0; - int dxfer_dir = hp->dxfer_direction; - int new_interface = ('\0' == hp->interface_id) ? 0 : 1; - - if ((SG_DXFER_UNKNOWN == dxfer_dir) || (SG_DXFER_FROM_DEV == dxfer_dir) - || (SG_DXFER_TO_FROM_DEV == dxfer_dir)) { - num_xfer = hp->dxfer_len; - if (schp->bufflen < num_xfer) - num_xfer = schp->bufflen; - } - if ((num_xfer <= 0) || (schp->dio_in_use) || - (new_interface - && ((SG_FLAG_NO_DXFER | SG_FLAG_MMAP_IO) & hp->flags))) - return 0; - - SCSI_LOG_TIMEOUT(4, printk("sg_read_xfer: num_xfer=%d, iovec_count=%d, k_use_sg=%d\n", - num_xfer, (int)hp->iovec_count, schp->k_use_sg)); - return 0; -} - -static int sg_read_oxfer(Sg_request * srp, char __user *outp, int num_read_xfer) { Sg_scatter_hold *schp = &srp->data; |