diff options
| -rw-r--r-- | drivers/usb/musb/ux500_dma.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c index cb86beb8ec2..db657104292 100644 --- a/drivers/usb/musb/ux500_dma.c +++ b/drivers/usb/musb/ux500_dma.c @@ -36,7 +36,7 @@ #undef WARNING #undef INFO #include <linux/usb/composite.h> -#define U8500_USB_DMA_MIN_TRANSFER_SIZE 512 +#define Ux500_USB_DMA_MIN_TRANSFER_SIZE 512 struct ux500_dma_channel { struct dma_channel channel; @@ -218,7 +218,7 @@ static int ux500_dma_is_compatible(struct dma_channel *channel, struct usb_gadget *gadget = &musb->g; struct usb_composite_dev *cdev = get_gadget_data(gadget); - if (length < U8500_USB_DMA_MIN_TRANSFER_SIZE) + if (length < Ux500_USB_DMA_MIN_TRANSFER_SIZE) return 0; list_for_each_entry(f, &cdev->config->functions, list) { @@ -265,12 +265,15 @@ static int ux500_dma_channel_program(struct dma_channel *channel, dma_addr_t dma_addr, u32 len) { int ret; + struct ux500_dma_channel *ux500_dma_channel = channel->private_data; BUG_ON(channel->status == MUSB_DMA_STATUS_UNKNOWN || channel->status == MUSB_DMA_STATUS_BUSY); - if (!ux500_dma_is_compatible(channel, packet_sz, (void *)dma_addr, len)) - return false; + if (len < Ux500_USB_DMA_MIN_TRANSFER_SIZE) + return 0; + if (!ux500_dma_channel->is_tx && len < packet_sz) + return 0; channel->status = MUSB_DMA_STATUS_BUSY; channel->actual_len = 0; |