diff options
| -rw-r--r-- | drivers/scsi/sg.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index ed69292babd..50c07bca727 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -615,7 +615,10 @@ sg_write(struct file *filp, const char __user *buf, size_t count, loff_t * ppos) else hp->dxfer_direction = (mxsize > 0) ? SG_DXFER_FROM_DEV : SG_DXFER_NONE; hp->dxfer_len = mxsize; - hp->dxferp = (char __user *)buf + cmd_size; + if (hp->dxfer_direction == SG_DXFER_TO_DEV) + hp->dxferp = (char __user *)buf + cmd_size; + else + hp->dxferp = NULL; hp->sbp = NULL; hp->timeout = old_hdr.reply_len; /* structure abuse ... */ hp->flags = input_size; /* structure abuse ... */ |