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Truncate to the window size in ssminphys(), not ssread().

This commit is contained in:
mycroft 1996-02-18 20:38:44 +00:00
parent 294879d4ee
commit 342c383728
2 changed files with 8 additions and 42 deletions
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25
sys/dev/scsipi/ss.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: ss.c,v 1.1 1996/02/18 20:32:46 mycroft Exp $ */
/* $NetBSD: ss.c,v 1.2 1996/02/18 20:38:44 mycroft Exp $ */
/*
* Copyright (c) 1995 Kenneth Stailey. All rights reserved.
@ -260,6 +260,9 @@ ssminphys(bp)
(ss->sc_link->adapter->scsi_minphys)(bp);
if (bp->b_bcount > ss->sio.scan_window_size)
bp->b_bcount = ss->sio.scan_window_size;
/*
* trim the transfer further for special devices this is
* because some scanners only read multiples of a line at a
@ -294,26 +297,6 @@ ssread(dev, uio, flag)
ss->flags |= SSF_TRIGGERED;
}
/* in any case, trim it down to window_size */
if (uio->uio_iov->iov_len > ss->sio.scan_window_size) {
uio->uio_iov->iov_len = ss->sio.scan_window_size;
SC_DEBUG(ss->sc_link, SDEV_DB1,
("ssread: bytes wanted exceeds window size\n"));
SC_DEBUG(ss->sc_link, SDEV_DB1,
("ssread: xfer reduced to %d\n", uio->uio_iov->iov_len));
}
/*
* EOF detection
*/
if (ss->sio.scan_window_size == 0) {
uio->uio_iov++;
uio->uio_iovcnt--;
return (0);
}
return (physio(ssstrategy, NULL, dev, B_READ, ssminphys, uio));
}

25
sys/scsi/ss.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: ss.c,v 1.1 1996/02/18 20:32:46 mycroft Exp $ */
/* $NetBSD: ss.c,v 1.2 1996/02/18 20:38:44 mycroft Exp $ */
/*
* Copyright (c) 1995 Kenneth Stailey. All rights reserved.
@ -260,6 +260,9 @@ ssminphys(bp)
(ss->sc_link->adapter->scsi_minphys)(bp);
if (bp->b_bcount > ss->sio.scan_window_size)
bp->b_bcount = ss->sio.scan_window_size;
/*
* trim the transfer further for special devices this is
* because some scanners only read multiples of a line at a
@ -294,26 +297,6 @@ ssread(dev, uio, flag)
ss->flags |= SSF_TRIGGERED;
}
/* in any case, trim it down to window_size */
if (uio->uio_iov->iov_len > ss->sio.scan_window_size) {
uio->uio_iov->iov_len = ss->sio.scan_window_size;
SC_DEBUG(ss->sc_link, SDEV_DB1,
("ssread: bytes wanted exceeds window size\n"));
SC_DEBUG(ss->sc_link, SDEV_DB1,
("ssread: xfer reduced to %d\n", uio->uio_iov->iov_len));
}
/*
* EOF detection
*/
if (ss->sio.scan_window_size == 0) {
uio->uio_iov++;
uio->uio_iovcnt--;
return (0);
}
return (physio(ssstrategy, NULL, dev, B_READ, ssminphys, uio));
}