linux-kernel - [PATCH] atm/firestream: handle thrown error

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Date:	Tue, 10 Oct 2006 03:32:15 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	chas@....nrl.navy.mil, Andrew Morton <akpm@...l.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] 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@...zik.org>

---

 drivers/atm/firestream.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/atm/firestream.c b/drivers/atm/firestream.c
index 40ab9b6..697ad82 100644
--- a/drivers/atm/firestream.c
+++ b/drivers/atm/firestream.c
@@ -1002,6 +1002,10 @@ static int fs_open(struct atm_vcc *atm_v
 					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);
 		}
-
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