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-atapi.c b/drivers/ide/ide-atapi.c
index 8a894fa..7129495 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -370,7 +370,7 @@
? "write" : "read");
pc->flags |= PC_FLAG_DMA_ERROR;
} else
- pc->xferred = pc->req_xfer;
+ pc->xferred = blk_rq_bytes(rq);
debug_log("%s: DMA finished\n", drive->name);
}
@@ -627,7 +627,7 @@
ide_hwif_t *hwif = drive->hwif;
ide_expiry_t *expiry = NULL;
struct request *rq = hwif->rq;
- unsigned int timeout;
+ unsigned int timeout, bytes;
u16 bcount;
u8 valid_tf;
u8 drq_int = !!(drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT);
@@ -647,9 +647,11 @@
pc->xferred = 0;
valid_tf = IDE_VALID_DEVICE;
- bcount = ((drive->media == ide_tape) ?
- pc->req_xfer :
- min(pc->req_xfer, 63 * 1024));
+ bytes = blk_rq_bytes(rq);
+
+ bcount = ((drive->media == ide_tape) ? bytes
+ : min_t(unsigned int,
+ bytes, 63 * 1024));
if (pc->flags & PC_FLAG_DMA_ERROR) {
pc->flags &= ~PC_FLAG_DMA_ERROR;