From e23b8a54a440a2b8ee5c9dc3eb2099ecf813ef70 Mon Sep 17 00:00:00 2001 From: Mian Yousaf Kaukab Date: Fri, 20 Nov 2015 11:49:30 +0100 Subject: [PATCH] usb: dwc2: host: fix descriptor list address masking Masks for HCDMA.CTD and HCDMA.DMAAddr are incorrect. As we always start from first descriptor, no need to mask the address anyway. Acked-by: John Youn Signed-off-by: Mian Yousaf Kaukab Signed-off-by: Gregory Herrero Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/core.c | 10 +++------- drivers/usb/dwc2/hw.h | 4 ---- 2 files changed, 3 insertions(+), 11 deletions(-) diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c index 542c9e6d95db..97de85521eb6 100644 --- a/drivers/usb/dwc2/core.c +++ b/drivers/usb/dwc2/core.c @@ -1905,7 +1905,6 @@ void dwc2_hc_start_transfer_ddma(struct dwc2_hsotg *hsotg, struct dwc2_host_chan *chan) { u32 hcchar; - u32 hc_dma; u32 hctsiz = 0; if (chan->do_ping) @@ -1937,14 +1936,11 @@ void dwc2_hc_start_transfer_ddma(struct dwc2_hsotg *hsotg, dma_sync_single_for_device(hsotg->dev, chan->desc_list_addr, chan->desc_list_sz, DMA_TO_DEVICE); - hc_dma = (u32)chan->desc_list_addr & HCDMA_DMA_ADDR_MASK; + dwc2_writel(chan->desc_list_addr, hsotg->regs + HCDMA(chan->hc_num)); - /* Always start from first descriptor */ - hc_dma &= ~HCDMA_CTD_MASK; - dwc2_writel(hc_dma, hsotg->regs + HCDMA(chan->hc_num)); if (dbg_hc(chan)) - dev_vdbg(hsotg->dev, "Wrote %08x to HCDMA(%d)\n", - hc_dma, chan->hc_num); + dev_vdbg(hsotg->dev, "Wrote %pad to HCDMA(%d)\n", + &chan->desc_list_addr, chan->hc_num); hcchar = dwc2_readl(hsotg->regs + HCCHAR(chan->hc_num)); hcchar &= ~HCCHAR_MULTICNT_MASK; diff --git a/drivers/usb/dwc2/hw.h b/drivers/usb/dwc2/hw.h index 553f24606c43..281b57b36ab4 100644 --- a/drivers/usb/dwc2/hw.h +++ b/drivers/usb/dwc2/hw.h @@ -769,10 +769,6 @@ #define TSIZ_XFERSIZE_SHIFT 0 #define HCDMA(_ch) HSOTG_REG(0x0514 + 0x20 * (_ch)) -#define HCDMA_DMA_ADDR_MASK (0x1fffff << 11) -#define HCDMA_DMA_ADDR_SHIFT 11 -#define HCDMA_CTD_MASK (0xff << 3) -#define HCDMA_CTD_SHIFT 3 #define HCDMAB(_ch) HSOTG_REG(0x051c + 0x20 * (_ch)) -- 2.30.2