firewire: don't panic on invalid AR request buffer

BUG() at this place is wrong.  (Unless if the low level driver would
already do higher-level input validation of incoming request headers.)

Invalid incoming requests or bugs in the controller which corrupt the
AR-req buffer needlessly crashed the box because this is run in tasklet
context.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/firewire/fw-transaction.c b/drivers/firewire/fw-transaction.c
index ccf0e4cf108..7f92c45349e 100644
--- a/drivers/firewire/fw-transaction.c
+++ b/drivers/firewire/fw-transaction.c
@@ -572,7 +572,8 @@ allocate_request(struct fw_packet *p)
                 break;
 
         default:
-                BUG();
+                fw_error("ERROR - corrupt request received - %08x %08x %08x\n",
+                         p->header[0], p->header[1], p->header[2]);
                 return NULL;
         }