wlcore: SPI - fix spi transfer_list

commit 4eeac22c159f053ea34527e4fea359ab10b4b5a5 upstream.

In corner case for wl12xx_spi_raw_write() when
	len == SPI_AGGR_BUFFER_SIZE
we don't setup correctly spi transfer_list.
Next we will have garbage and strange errors
reported by SPI framework (eg. wrong speed_hz,
failed to transfer one message from queue)
when iterate transfer_list.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Luciano Coelho <luca@coelho.fi>
[bwh: Backported to 3.2: adjust filename, context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/net/wireless/wl12xx/spi.c b/drivers/net/wireless/wl12xx/spi.c
index 0f97186..611debe 100644 (file)
--- a/drivers/net/wireless/wl12xx/spi.c
+++ b/drivers/net/wireless/wl12xx/spi.c
@@ -274,7 +274,7 @@ static void wl1271_spi_raw_read(struct wl1271 *wl, int addr, void *buf,
 static void wl1271_spi_raw_write(struct wl1271 *wl, int addr, void *buf,
                          size_t len, bool fixed)
 {
-       struct spi_transfer t[2 * WSPI_MAX_NUM_OF_CHUNKS];
+       struct spi_transfer t[2 * (WSPI_MAX_NUM_OF_CHUNKS + 1)];
        struct spi_message m;
        u32 commands[WSPI_MAX_NUM_OF_CHUNKS];
        u32 *cmd;