diff options
| author | Christoph Hellwig <hch@lst.de> | 2017-01-31 18:57:31 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2017-02-01 00:00:44 +0300 |
| commit | aebf526b53aea164508730427597d45f3e06b376 (patch) | |
| tree | 98ab726d0f7feb610feee9830246c900c6919eea /drivers/block/mg_disk.c | |
| parent | 2f5a8e80f79dc82e00f4cca557dc9ceaf064b450 (diff) | |
| download | linux-aebf526b53aea164508730427597d45f3e06b376.tar.xz | |
block: fold cmd_type into the REQ_OP_ space
Instead of keeping two levels of indirection for requests types, fold it
all into the operations. The little caveat here is that previously
cmd_type only applied to struct request, while the request and bio op
fields were set to plain REQ_OP_READ/WRITE even for passthrough
operations.
Instead this patch adds new REQ_OP_* for SCSI passthrough and driver
private requests, althought it has to add two for each so that we
can communicate the data in/out nature of the request.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block/mg_disk.c')
| -rw-r--r-- | drivers/block/mg_disk.c | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c index e937fcf71769..286f276f586e 100644 --- a/drivers/block/mg_disk.c +++ b/drivers/block/mg_disk.c @@ -670,15 +670,17 @@ static void mg_request_poll(struct request_queue *q) break; } - if (unlikely(host->req->cmd_type != REQ_TYPE_FS)) { - mg_end_request_cur(host, -EIO); - continue; - } - - if (rq_data_dir(host->req) == READ) + switch (req_op(host->req)) { + case REQ_OP_READ: mg_read(host->req); - else + break; + case REQ_OP_WRITE: mg_write(host->req); + break; + default: + mg_end_request_cur(host, -EIO); + break; + } } } @@ -687,13 +689,15 @@ static unsigned int mg_issue_req(struct request *req, unsigned int sect_num, unsigned int sect_cnt) { - if (rq_data_dir(req) == READ) { + switch (req_op(host->req)) { + case REQ_OP_READ: if (mg_out(host, sect_num, sect_cnt, MG_CMD_RD, &mg_read_intr) != MG_ERR_NONE) { mg_bad_rw_intr(host); return host->error; } - } else { + break; + case REQ_OP_WRITE: /* TODO : handler */ outb(ATA_NIEN, (unsigned long)host->dev_base + MG_REG_DRV_CTRL); if (mg_out(host, sect_num, sect_cnt, MG_CMD_WR, &mg_write_intr) @@ -712,6 +716,10 @@ static unsigned int mg_issue_req(struct request *req, mod_timer(&host->timer, jiffies + 3 * HZ); outb(MG_CMD_WR_CONF, (unsigned long)host->dev_base + MG_REG_COMMAND); + break; + default: + mg_end_request_cur(host, -EIO); + break; } return MG_ERR_NONE; } @@ -753,11 +761,6 @@ static void mg_request(struct request_queue *q) continue; } - if (unlikely(req->cmd_type != REQ_TYPE_FS)) { - mg_end_request_cur(host, -EIO); - continue; - } - if (!mg_issue_req(req, host, sect_num, sect_cnt)) return; } |