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Fix unused variable warning in xen's blkback.c

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With clang 15, the following -Werror warning is produced:

    sys/dev/xen/blkback/blkback.c:1561:12: error: variable 'req_seg_idx' set but not used [-Werror,-Wunused-but-set-variable]
                    u_int                    req_seg_idx;
                                             ^

The 'req_seg_idx' variable was used in the for loop later in the
xbb_dispatch_io() function, but refactoring in 112cacaee4 got rid of
it. Remove the variable since it no longer serves any purpose.

MFC after:	3 days
This commit is contained in:
Dimitry Andric 2022-07-26 14:02:36 +02:00
parent e635220e1a
commit 39e12a7591
1 changed files with 0 additions and 3 deletions
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3
sys/dev/xen/blkback/blkback.c
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@ -1558,14 +1558,12 @@ xbb_dispatch_io(struct xbb_softc *xbb, struct xbb_xen_reqlist *reqlist)
STAILQ_FOREACH(nreq, &reqlist->contig_req_list, links) {
blkif_request_t *ring_req;
u_int req_seg_idx;
ring_req = nreq->ring_req;
nr_sects = 0;
nseg = ring_req->nr_segments;
nreq->nr_pages = nseg;
nreq->nr_512b_sectors = 0;
req_seg_idx = 0;
sg = NULL;
/* Check that number of segments is sane. */
@ -1619,7 +1617,6 @@ xbb_dispatch_io(struct xbb_softc *xbb, struct xbb_xen_reqlist *reqlist)
map++;
xbb_sg++;
seg_idx++;
req_seg_idx++;
}
/* Convert to the disk's sector size */