ide-atapi: switch to blk_rq_bytes() on do_request() path
After the recent struct request cleanups, blk_rq_bytes() is guaranteed
to be valid and is the current total length of the rq's bio. Use that
instead of pc->req_xfer in the do_request() path after the command has
been queued
The remaining usage of pc->req_xfer now is only until we map the rq to a
bio.
While at it:
- remove local caching of rq completion length in ide_tape_issue_pc()
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index fc79cf4..aaeef12 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -292,6 +292,7 @@
{
idetape_tape_t *tape = drive->driver_data;
struct ide_atapi_pc *pc = drive->failed_pc;
+ struct request *rq = drive->hwif->rq;
tape->sense_key = sense[2] & 0xF;
tape->asc = sense[12];
@@ -302,7 +303,7 @@
/* Correct pc->xferred by asking the tape. */
if (pc->flags & PC_FLAG_DMA_ERROR)
- pc->xferred = pc->req_xfer -
+ pc->xferred = blk_rq_bytes(rq) -
tape->blk_size *
get_unaligned_be32(&sense[3]);
@@ -484,6 +485,7 @@
struct ide_atapi_pc *pc)
{
idetape_tape_t *tape = drive->driver_data;
+ struct request *rq = drive->hwif->rq;
if (drive->failed_pc == NULL && pc->c[0] != REQUEST_SENSE)
drive->failed_pc = pc;
@@ -493,7 +495,6 @@
if (pc->retries > IDETAPE_MAX_PC_RETRIES ||
(pc->flags & PC_FLAG_ABORT)) {
- unsigned int done = blk_rq_bytes(drive->hwif->rq);
/*
* We will "abort" retrying a packet command in case legitimate
@@ -517,7 +518,7 @@
drive->failed_pc = NULL;
drive->pc_callback(drive, 0);
- ide_complete_rq(drive, -EIO, done);
+ ide_complete_rq(drive, -EIO, blk_rq_bytes(rq));
return ide_stopped;
}
debug_log(DBG_SENSE, "Retry #%d, cmd = %02X\n", pc->retries, pc->c[0]);
@@ -592,9 +593,8 @@
put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]);
pc->c[1] = 1;
pc->buf = NULL;
- pc->buf_size = length * tape->blk_size;
- pc->req_xfer = pc->buf_size;
- if (pc->req_xfer == tape->buffer_size)
+ pc->buf_size = blk_rq_bytes(rq);
+ if (pc->buf_size == tape->buffer_size)
pc->flags |= PC_FLAG_DMA_OK;
if (opcode == READ_6)
@@ -718,7 +718,7 @@
cmd.rq = rq;
- ide_init_sg_cmd(&cmd, pc->req_xfer);
+ ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
ide_map_sg(drive, &cmd);
return ide_tape_issue_pc(drive, &cmd, pc);