[alsa-devel] [PATCH - asihpi 5/6] Avoid null pointer dereference.

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 */