[PATCH 5/5] pktcdvd: BUG_ON cleanups

Peter Osterlund
2005-09-11T16:48:12Z

Remove some redundant BUG_ON() statements in pktcdvd and move one
run-time check to compile-time.

Signed-off-by: Peter Osterlund <petero2@telia.com>
---

drivers/block/pktcdvd.c | 9 +++------
include/linux/pktcdvd.h | 3 +++
2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -669,7 +669,6 @@ static void pkt_make_local_copy(struct p
}
offs += CD_FRAMESIZE;
if (offs >= PAGE_SIZE) {
- BUG_ON(offs > PAGE_SIZE);
offs = 0;
p++;
}
@@ -804,10 +803,11 @@ static struct packet_data *pkt_get_packe
list_del_init(&pkt->list);
if (pkt->sector != zone)
pkt->cache_valid = 0;
- break;
+ return pkt;
}
}
- return pkt;
+ BUG();
+ return NULL;
}

static void pkt_put_packet_data(struct pktcdvd_device *pd, struct packet_data *pkt)
@@ -951,7 +951,6 @@ try_next_bio:
}

pkt = pkt_get_packet_data(pd, zone);
- BUG_ON(!pkt);

pd->current_sector = zone + pd->settings.size;
pkt->sector = zone;
@@ -2211,7 +2210,6 @@ static int pkt_make_request(request_queu
* No matching packet found. Store the bio in the work queue.
*/
node = mempool_alloc(pd->rb_pool, GFP_NOIO);
- BUG_ON(!node);
node->bio = bio;
spin_lock(&pd->lock);
BUG_ON(pd->bio_queue_size < 0);
@@ -2419,7 +2417,6 @@ static int pkt_ioctl(struct inode *inode
struct pktcdvd_device *pd = inode->i_bdev->bd_disk->private_data;

VPRINTK("pkt_ioctl: cmd %x, dev %d:%d\n", cmd, imajor(inode), iminor(inode));
- BUG_ON(!pd);

switch (cmd) {
/*
diff --git a/include/linux/pktcdvd.h b/include/linux/pktcdvd.h
--- a/include/linux/pktcdvd.h
+++ b/include/linux/pktcdvd.h
@@ -166,6 +166,9 @@ struct packet_iosched
/*
* 32 buffers of 2048 bytes
*/
+#if (PAGE_SIZE % CD_FRAMESIZE) != 0
+#error "PAGE_SIZE must be a multiple of CD_FRAMESIZE"
+#endif
#define PACKET_MAX_SIZE 32
#define PAGES_PER_PACKET (PACKET_MAX_SIZE * CD_FRAMESIZE / PAGE_SIZE)
#define PACKET_MAX_SECTORS (PACKET_MAX_SIZE * CD_FRAMESIZE >> 9)