drivers/net/can: Correct NULL test

Test the just-allocated value for NULL rather than some other value.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,y;
statement S;
@@

x = \(kmalloc\|kcalloc\|kzalloc\)(...);
(
if ((x) == NULL) S
|
if (
-   y
+   x
       == NULL)
 S
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/can/mcp251x.c b/drivers/net/can/mcp251x.c
index 9c5a1537939ce5c5ce4a3f6950686c66389ea1a3..1a72ca066a17fa013a3453dcaacf694a32431fed 100644 (file)
--- a/drivers/net/can/mcp251x.c
+++ b/drivers/net/can/mcp251x.c
@@ -990,7 +990,7 @@ static int __devinit mcp251x_can_probe(struct spi_device *spi)
                        goto error_tx_buf;
                }
                priv->spi_rx_buf = kmalloc(SPI_TRANSFER_BUF_LEN, GFP_KERNEL);
-               if (!priv->spi_tx_buf) {
+               if (!priv->spi_rx_buf) {
                        ret = -ENOMEM;
                        goto error_rx_buf;
                }