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authorAndrew Morton <akpm@linux-foundation.org>2007-04-25 13:01:21 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-04-25 13:50:55 -0700
commitcbc31a475a7f7748bd0a4e536533868e7cff8645 (patch)
treeaef103b0ba0076988b7d5f8c967351443cb785b6
parent5044eed48886b105a123333fe7ca97c6bd496120 (diff)
downloadlinux-2.6.34-ux500-cbc31a475a7f7748bd0a4e536533868e7cff8645.tar.gz
packet: fix error handling
The packet driver is assuming (reasonably) that the (undocumented) request.errors is an errno. But it is in fact some mysterious bitfield. When things go wrong we return weird positive numbers to the VFS as pointers and it goes oops. Thanks to William Heimbigner for reporting and diagnosis. (It doesn't oops, but this driver still doesn't work for William) Cc: William Heimbigner <icxcnika@mar.tar.cc> Cc: Peter Osterlund <petero2@telia.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/block/pktcdvd.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index a4fb7038318..f1b9dd7d47d 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -777,7 +777,8 @@ static int pkt_generic_packet(struct pktcdvd_device *pd, struct packet_command *
rq->cmd_flags |= REQ_QUIET;
blk_execute_rq(rq->q, pd->bdev->bd_disk, rq, 0);
- ret = rq->errors;
+ if (rq->errors)
+ ret = -EIO;
out:
blk_put_request(rq);
return ret;