From: Vardan Mikayelyan <[email protected]> Remove DMA memory free from EP disable flow by replacing dma_alloc_coherent with dmam_alloc_coherent.
Cc: John Stultz <[email protected]> Signed-off-by: Vardan Mikayelyan <[email protected]> Signed-off-by: John Youn <[email protected]> --- Hi John, Can you see if this fixes the issue on your platform? Thanks, John drivers/usb/dwc2/gadget.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 6e00177da02b..f2c8ef2ffa61 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3751,8 +3751,8 @@ static int dwc2_hsotg_ep_enable(struct usb_ep *ep, __func__, epctrl, epctrl_reg); /* Allocate DMA descriptor chain for non-ctrl endpoints */ - if (using_desc_dma(hsotg)) { - hs_ep->desc_list = dma_alloc_coherent(hsotg->dev, + if (using_desc_dma(hsotg) && !hs_ep->desc_list) { + hs_ep->desc_list = dmam_alloc_coherent(hsotg->dev, MAX_DMA_DESC_NUM_GENERIC * sizeof(struct dwc2_dma_desc), &hs_ep->desc_list_dma, GFP_ATOMIC); @@ -3875,7 +3875,7 @@ static int dwc2_hsotg_ep_enable(struct usb_ep *ep, error2: if (ret && using_desc_dma(hsotg) && hs_ep->desc_list) { - dma_free_coherent(hsotg->dev, MAX_DMA_DESC_NUM_GENERIC * + dmam_free_coherent(hsotg->dev, MAX_DMA_DESC_NUM_GENERIC * sizeof(struct dwc2_dma_desc), hs_ep->desc_list, hs_ep->desc_list_dma); hs_ep->desc_list = NULL; @@ -3905,14 +3905,6 @@ static int dwc2_hsotg_ep_disable(struct usb_ep *ep) return -EINVAL; } - /* Remove DMA memory allocated for non-control Endpoints */ - if (using_desc_dma(hsotg)) { - dma_free_coherent(hsotg->dev, MAX_DMA_DESC_NUM_GENERIC * - sizeof(struct dwc2_dma_desc), - hs_ep->desc_list, hs_ep->desc_list_dma); - hs_ep->desc_list = NULL; - } - epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index); spin_lock_irqsave(&hsotg->lock, flags); -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
