From: Phillip Susi <[email protected]>
The pktcdvd driver was using an 8 bit field to store the packet length
obtained from the disc track info. This causes it to overflow packet
length values of 128KB or more. I changed the field to 32 bits to fix
this.
The pktcdvd driver defaulted to its maximum allowed packet length
when it detected a 0 in the track info field. I changed this to fail
the operation and refuse to access the media. This seems more sane
than attempting to access it with a value that almost certainly will
not work.
Signed-off-by: Peter Osterlund <[email protected]>
---
drivers/block/pktcdvd.c | 2 +-
include/linux/pktcdvd.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 81ad466..f0a0ad4 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -1640,7 +1640,7 @@ static int pkt_probe_settings(struct pkt
pd->settings.size = be32_to_cpu(ti.fixed_packet_size) << 2;
if (pd->settings.size == 0) {
printk("pktcdvd: detected zero packet size!\n");
- pd->settings.size = 128;
+ return -ENXIO;
}
if (pd->settings.size > PACKET_MAX_SECTORS) {
printk("pktcdvd: packet size is too big\n");
diff --git a/include/linux/pktcdvd.h b/include/linux/pktcdvd.h
index 2c177e4..d1c9c4a 100644
--- a/include/linux/pktcdvd.h
+++ b/include/linux/pktcdvd.h
@@ -114,7 +114,7 @@ struct pkt_ctrl_command {
struct packet_settings
{
- __u8 size; /* packet size in (512 byte) sectors */
+ __u32 size; /* packet size in (512 byte) sectors */
__u8 fp; /* fixed packets */
__u8 link_loss; /* the rest is specified
* as per Mt Fuji */
--
Peter Osterlund - [email protected]
http://web.telia.com/~u89404340
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