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From: linux@audioscience.com
To: patch@alsa-project.org
Cc: Eliot Blennerhassett <eblennerhassett@audioscience.com>,
	alsa-devel@alsa-project.org
Subject: [PATCH - asihpi 5/6] Avoid null pointer dereference.
Date: Fri, 22 Aug 2008 17:26:32 +1200	[thread overview]
Message-ID: <1219382793-21272-2-git-send-email-linux@audioscience.com> (raw)
In-Reply-To: <1219382793-21272-1-git-send-email-linux@audioscience.com>

From: Eliot Blennerhassett <eblennerhassett@audioscience.com>


Signed-off-by: Eliot Blennerhassett <eblennerhassett@audioscience.com>

diff --git a/pci/asihpi/hpi6205.c b/pci/asihpi/hpi6205.c
index daa359d..1654070 100644
--- a/pci/asihpi/hpi6205.c
+++ b/pci/asihpi/hpi6205.c
@@ -2126,6 +2126,9 @@ static short Hpi6205_TransferData(
 	u32 dwTimeOut, dwTemp2;
 	struct bus_master_interface *interface = pHw6205->pInterfaceBuffer;
 
+	if (!pData)
+		return HPI_ERROR_INVALID_DATA_TRANSFER;
+
 	dwDataSize &= ~3L;	/* round dwDataSize down to nearest 4 bytes */
 
 	/* make sure state is IDLE */
-- 
1.5.4.3

  reply	other threads:[~2008-08-22  5:26 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-08-22  5:26 [PATCH - asihpi 4/6] Mem buffer alloc inside adapter mutex linux
2008-08-22  5:26 ` linux [this message]
2008-08-22  5:26   ` [PATCH - asihpi 6/6] Return from timer func if XRUN. Avoids read/write of reset stream linux
2008-08-22  6:46 ` [PATCH - asihpi 4/6] Mem buffer alloc inside adapter mutex Takashi Iwai

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