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path: root/drivers/usb/musb
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Diffstat (limited to 'drivers/usb/musb')
-rw-r--r--drivers/usb/musb/ux500_dma.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c
index 382291b91f7b..4bd5400e0395 100644
--- a/drivers/usb/musb/ux500_dma.c
+++ b/drivers/usb/musb/ux500_dma.c
@@ -289,7 +289,7 @@ static int ux500_dma_controller_start(struct dma_controller *c)
struct musb *musb = controller->private_data;
struct device *dev = musb->controller;
struct musb_hdrc_platform_data *plat = dev->platform_data;
- struct ux500_musb_board_data *data = plat->board_data;
+ struct ux500_musb_board_data *data;
struct dma_channel *dma_channel = NULL;
u32 ch_num;
u8 dir;
@@ -299,14 +299,19 @@ static int ux500_dma_controller_start(struct dma_controller *c)
struct ux500_dma_channel *channel_array;
dma_cap_mask_t mask;
+ if (!plat) {
+ dev_err(musb->controller, "No platform data\n");
+ return -EINVAL;
+ }
+ data = plat->board_data;
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
/* Prepare the loop for RX channels */
channel_array = controller->rx_channel;
- param_array = data->dma_rx_param_array;
+ param_array = data ? data->dma_rx_param_array : NULL;
for (dir = 0; dir < 2; dir++) {
for (ch_num = 0;
@@ -339,7 +344,7 @@ static int ux500_dma_controller_start(struct dma_controller *c)
/* Prepare the loop for TX channels */
channel_array = controller->tx_channel;
- param_array = data->dma_tx_param_array;
+ param_array = data ? data->dma_tx_param_array : NULL;
is_tx = 1;
}