linux-kernel - Re: [PATCH] INPUT: fix hidinput_connect ignoring retval from input_register

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Date:	Mon, 29 Oct 2007 01:49:17 -0700
From:	Dirk Hohndel <hohndel@...ux.intel.com>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Jiri Kosina <jikos@...os.cz>, linux-input@...ey.karlin.mff.cuni.cz,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] INPUT: fix hidinput_connect ignoring retval from input_register_device

On Mon, Oct 29, 2007 at 03:53:14AM -0400, Jeff Garzik wrote:
>
>  You would also want to kfree(hidinput) on failure too.

Oops, of course. Thanks for catching that. Here's the updated patch

/D


[INPUT] hidinput_connect incorrectly ignored return value from input_register_device

Signed-off-by: Dirk Hohndel <hohndel@...ux.intel.com>

---
 drivers/hid/hid-input.c |   12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index dd332f2..880161b 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -1186,13 +1186,21 @@ int hidinput_connect(struct hid_device *hid)
 				 * UGCI) cram a lot of unrelated inputs into the
 				 * same interface. */
 				hidinput->report = report;
-				input_register_device(hidinput->input);
+				if (input_register_device(hidinput->input)) {
+					input_free_device(hidinput->input);
+					kfree(hidinput);
+					return -1;
+				}
 				hidinput = NULL;
 			}
 		}
 
 	if (hidinput)
-		input_register_device(hidinput->input);
+		if (input_register_device(hidinput->input)) {
+			input_free_device(hidinput->input);
+			kfree(hidinput);
+			return -1;
+		}
 
 	return 0;
 }
-- 
gitgui.0.8.4.g8d863


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