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gigaset: gigaset_isowbuf_getbytes() may return signed unnoticed

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ifd->offset is unsigned.  gigaset_isowbuf_getbytes() may return signed
unnoticed.  Revised version of patch originally submitted by Roel Kluin
<[email protected]>.

Signed-off-by: Tilman Schmidt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Tilman Schmidt 2008-07-23 21:28:27 -07:00 • committed by Linus Torvalds
commit 5f09c4c797
1 changed files with 6 additions and 6 deletions
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12
drivers/isdn/gigaset/bas-gigaset.c
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@ -1050,10 +1050,9 @@ static int submit_iso_write_urb(struct isow_urbctx_t *ucx)
}
/* retrieve block of data to send */
ifd->offset = gigaset_isowbuf_getbytes(ubc->isooutbuf,
ifd->length);
if (ifd->offset < 0) {
if (ifd->offset == -EBUSY) {
rc = gigaset_isowbuf_getbytes(ubc->isooutbuf, ifd->length);
if (rc < 0) {
if (rc == -EBUSY) {
gig_dbg(DEBUG_ISO,
"%s: buffer busy at frame %d",
__func__, nframe);
@ -1062,11 +1061,12 @@ static int submit_iso_write_urb(struct isow_urbctx_t *ucx)
} else {
dev_err(ucx->bcs->cs->dev,
"%s: buffer error %d at frame %d\n",
__func__, ifd->offset, nframe);
return ifd->offset;
__func__, rc, nframe);
return rc;
}
break;
}
ifd->offset = rc;
ucx->limit = ubc->isooutbuf->nextread;
ifd->status = 0;
ifd->actual_length = 0;