From: Sergei Shtylyov <sshtylyov@xxxxxxxxxxxxx> Suppress "parasitic" endpoint interrupts in the DMA mode when using CPPI DMA driver; they're caused by the MUSB gadget driver using the DMA request mode 0 instead of the mode 1. Signed-off-by: Sergei Shtylyov <sshtylyov@xxxxxxxxxxxxx> Signed-off-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx> --- drivers/usb/musb/musb_gadget.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -349,7 +349,8 @@ static void txstate(struct musb *musb, s #elif defined(CONFIG_USB_TI_CPPI_DMA) /* program endpoint CSR first, then setup DMA */ csr &= ~(MUSB_TXCSR_P_UNDERRUN | MUSB_TXCSR_TXPKTRDY); - csr |= MUSB_TXCSR_MODE | MUSB_TXCSR_DMAENAB; + csr |= MUSB_TXCSR_DMAENAB | MUSB_TXCSR_DMAMODE | + MUSB_TXCSR_MODE; musb_writew(epio, MUSB_TXCSR, (MUSB_TXCSR_P_WZC_BITS & ~MUSB_TXCSR_P_UNDERRUN) | csr); -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
