[ATM] firestream: handle thrown error

gcc emits the following warning:

drivers/atm/firestream.c: In function ‘fs_open’:
drivers/atm/firestream.c:870: warning: ‘tmc0’ may be used uninitialized in this function

This indicates a real bug.  We should check make_rate() return value for
potential errors.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/atm/firestream.c b/drivers/atm/firestream.c
index 40ab9b65fae..697ad82f663 100644
--- a/drivers/atm/firestream.c
+++ b/drivers/atm/firestream.c
@@ -1002,6 +1002,10 @@ static int fs_open(struct atm_vcc *atm_vcc)
                                         r = ROUND_UP;
                                 }
                                 error = make_rate (pcr, r, &tmc0, NULL);
+                                if (error) {
+                                        kfree(tc);
+                                        return error;
+                                }
                         }
                         fs_dprintk (FS_DEBUG_OPEN, "pcr = %d.\n", pcr);
                 }