Merge branch 'x15-audio-fixes' into omap-for-v4.4/fixes

1 files changed, 101 insertions, 51 deletions

diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c
index 4cc95df4262d..bda0b21b850f 100644
--- a/drivers/usb/dwc2/hcd_intr.c
+++ b/drivers/usb/dwc2/hcd_intr.c
@@ -148,7 +148,7 @@ static void dwc2_sof_intr(struct dwc2_hsotg *hsotg)
 		dwc2_hcd_queue_transactions(hsotg, tr_type);
 
 	/* Clear interrupt */
-	writel(GINTSTS_SOF, hsotg->regs + GINTSTS);
+	dwc2_writel(GINTSTS_SOF, hsotg->regs + GINTSTS);
 }
 
 /*
@@ -164,7 +164,7 @@ static void dwc2_rx_fifo_level_intr(struct dwc2_hsotg *hsotg)
 	if (dbg_perio())
 		dev_vdbg(hsotg->dev, "--RxFIFO Level Interrupt--\n");
 
-	grxsts = readl(hsotg->regs + GRXSTSP);
+	grxsts = dwc2_readl(hsotg->regs + GRXSTSP);
 	chnum = (grxsts & GRXSTS_HCHNUM_MASK) >> GRXSTS_HCHNUM_SHIFT;
 	chan = hsotg->hc_ptr_array[chnum];
 	if (!chan) {
@@ -247,11 +247,11 @@ static void dwc2_hprt0_enable(struct dwc2_hsotg *hsotg, u32 hprt0,
 	dev_vdbg(hsotg->dev, "%s(%p)\n", __func__, hsotg);
 
 	/* Every time when port enables calculate HFIR.FrInterval */
-	hfir = readl(hsotg->regs + HFIR);
+	hfir = dwc2_readl(hsotg->regs + HFIR);
 	hfir &= ~HFIR_FRINT_MASK;
 	hfir |= dwc2_calc_frame_interval(hsotg) << HFIR_FRINT_SHIFT &
 		HFIR_FRINT_MASK;
-	writel(hfir, hsotg->regs + HFIR);
+	dwc2_writel(hfir, hsotg->regs + HFIR);
 
 	/* Check if we need to adjust the PHY clock speed for low power */
 	if (!params->host_support_fs_ls_low_power) {
@@ -260,7 +260,7 @@ static void dwc2_hprt0_enable(struct dwc2_hsotg *hsotg, u32 hprt0,
 		return;
 	}
 
-	usbcfg = readl(hsotg->regs + GUSBCFG);
+	usbcfg = dwc2_readl(hsotg->regs + GUSBCFG);
 	prtspd = (hprt0 & HPRT0_SPD_MASK) >> HPRT0_SPD_SHIFT;
 
 	if (prtspd == HPRT0_SPD_LOW_SPEED || prtspd == HPRT0_SPD_FULL_SPEED) {
@@ -268,11 +268,11 @@ static void dwc2_hprt0_enable(struct dwc2_hsotg *hsotg, u32 hprt0,
 		if (!(usbcfg & GUSBCFG_PHY_LP_CLK_SEL)) {
 			/* Set PHY low power clock select for FS/LS devices */
 			usbcfg |= GUSBCFG_PHY_LP_CLK_SEL;
-			writel(usbcfg, hsotg->regs + GUSBCFG);
+			dwc2_writel(usbcfg, hsotg->regs + GUSBCFG);
 			do_reset = 1;
 		}
 
-		hcfg = readl(hsotg->regs + HCFG);
+		hcfg = dwc2_readl(hsotg->regs + HCFG);
 		fslspclksel = (hcfg & HCFG_FSLSPCLKSEL_MASK) >>
 			      HCFG_FSLSPCLKSEL_SHIFT;
 
@@ -286,7 +286,7 @@ static void dwc2_hprt0_enable(struct dwc2_hsotg *hsotg, u32 hprt0,
 				fslspclksel = HCFG_FSLSPCLKSEL_6_MHZ;
 				hcfg &= ~HCFG_FSLSPCLKSEL_MASK;
 				hcfg |= fslspclksel << HCFG_FSLSPCLKSEL_SHIFT;
-				writel(hcfg, hsotg->regs + HCFG);
+				dwc2_writel(hcfg, hsotg->regs + HCFG);
 				do_reset = 1;
 			}
 		} else {
@@ -297,7 +297,7 @@ static void dwc2_hprt0_enable(struct dwc2_hsotg *hsotg, u32 hprt0,
 				fslspclksel = HCFG_FSLSPCLKSEL_48_MHZ;
 				hcfg &= ~HCFG_FSLSPCLKSEL_MASK;
 				hcfg |= fslspclksel << HCFG_FSLSPCLKSEL_SHIFT;
-				writel(hcfg, hsotg->regs + HCFG);
+				dwc2_writel(hcfg, hsotg->regs + HCFG);
 				do_reset = 1;
 			}
 		}
@@ -305,7 +305,7 @@ static void dwc2_hprt0_enable(struct dwc2_hsotg *hsotg, u32 hprt0,
 		/* Not low power */
 		if (usbcfg & GUSBCFG_PHY_LP_CLK_SEL) {
 			usbcfg &= ~GUSBCFG_PHY_LP_CLK_SEL;
-			writel(usbcfg, hsotg->regs + GUSBCFG);
+			dwc2_writel(usbcfg, hsotg->regs + GUSBCFG);
 			do_reset = 1;
 		}
 	}
@@ -332,7 +332,7 @@ static void dwc2_port_intr(struct dwc2_hsotg *hsotg)
 
 	dev_vdbg(hsotg->dev, "--Port Interrupt--\n");
 
-	hprt0 = readl(hsotg->regs + HPRT0);
+	hprt0 = dwc2_readl(hsotg->regs + HPRT0);
 	hprt0_modify = hprt0;
 
 	/*
@@ -388,7 +388,7 @@ static void dwc2_port_intr(struct dwc2_hsotg *hsotg)
 	}
 
 	/* Clear Port Interrupts */
-	writel(hprt0_modify, hsotg->regs + HPRT0);
+	dwc2_writel(hprt0_modify, hsotg->regs + HPRT0);
 }
 
 /*
@@ -408,7 +408,7 @@ static u32 dwc2_get_actual_xfer_length(struct dwc2_hsotg *hsotg,
 {
 	u32 hctsiz, count, length;
 
-	hctsiz = readl(hsotg->regs + HCTSIZ(chnum));
+	hctsiz = dwc2_readl(hsotg->regs + HCTSIZ(chnum));
 
 	if (halt_status == DWC2_HC_XFER_COMPLETE) {
 		if (chan->ep_is_in) {
@@ -491,7 +491,7 @@ static int dwc2_update_urb_state(struct dwc2_hsotg *hsotg,
 		urb->status = 0;
 	}
 
-	hctsiz = readl(hsotg->regs + HCTSIZ(chnum));
+	hctsiz = dwc2_readl(hsotg->regs + HCTSIZ(chnum));
 	dev_vdbg(hsotg->dev, "DWC_otg: %s: %s, channel %d\n",
 		 __func__, (chan->ep_is_in ? "IN" : "OUT"), chnum);
 	dev_vdbg(hsotg->dev, "  chan->xfer_len %d\n", chan->xfer_len);
@@ -514,7 +514,7 @@ void dwc2_hcd_save_data_toggle(struct dwc2_hsotg *hsotg,
 			       struct dwc2_host_chan *chan, int chnum,
 			       struct dwc2_qtd *qtd)
 {
-	u32 hctsiz = readl(hsotg->regs + HCTSIZ(chnum));
+	u32 hctsiz = dwc2_readl(hsotg->regs + HCTSIZ(chnum));
 	u32 pid = (hctsiz & TSIZ_SC_MC_PID_MASK) >> TSIZ_SC_MC_PID_SHIFT;
 
 	if (chan->ep_type != USB_ENDPOINT_XFER_CONTROL) {
@@ -771,9 +771,9 @@ cleanup:
 		}
 	}
 
-	haintmsk = readl(hsotg->regs + HAINTMSK);
+	haintmsk = dwc2_readl(hsotg->regs + HAINTMSK);
 	haintmsk &= ~(1 << chan->hc_num);
-	writel(haintmsk, hsotg->regs + HAINTMSK);
+	dwc2_writel(haintmsk, hsotg->regs + HAINTMSK);
 
 	/* Try to queue more transfers now that there's a free channel */
 	tr_type = dwc2_hcd_select_transactions(hsotg);
@@ -820,9 +820,9 @@ static void dwc2_halt_channel(struct dwc2_hsotg *hsotg,
 			 * is enabled so that the non-periodic schedule will
 			 * be processed
 			 */
-			gintmsk = readl(hsotg->regs + GINTMSK);
+			gintmsk = dwc2_readl(hsotg->regs + GINTMSK);
 			gintmsk |= GINTSTS_NPTXFEMP;
-			writel(gintmsk, hsotg->regs + GINTMSK);
+			dwc2_writel(gintmsk, hsotg->regs + GINTMSK);
 		} else {
 			dev_vdbg(hsotg->dev, "isoc/intr\n");
 			/*
@@ -839,9 +839,9 @@ static void dwc2_halt_channel(struct dwc2_hsotg *hsotg,
 			 * enabled so that the periodic schedule will be
 			 * processed
 			 */
-			gintmsk = readl(hsotg->regs + GINTMSK);
+			gintmsk = dwc2_readl(hsotg->regs + GINTMSK);
 			gintmsk |= GINTSTS_PTXFEMP;
-			writel(gintmsk, hsotg->regs + GINTMSK);
+			dwc2_writel(gintmsk, hsotg->regs + GINTMSK);
 		}
 	}
 }
@@ -906,7 +906,7 @@ static void dwc2_complete_periodic_xfer(struct dwc2_hsotg *hsotg,
 					struct dwc2_qtd *qtd,
 					enum dwc2_halt_status halt_status)
 {
-	u32 hctsiz = readl(hsotg->regs + HCTSIZ(chnum));
+	u32 hctsiz = dwc2_readl(hsotg->regs + HCTSIZ(chnum));
 
 	qtd->error_count = 0;
 
@@ -1184,7 +1184,7 @@ static void dwc2_update_urb_state_abn(struct dwc2_hsotg *hsotg,
 
 	urb->actual_length += xfer_length;
 
-	hctsiz = readl(hsotg->regs + HCTSIZ(chnum));
+	hctsiz = dwc2_readl(hsotg->regs + HCTSIZ(chnum));
 	dev_vdbg(hsotg->dev, "DWC_otg: %s: %s, channel %d\n",
 		 __func__, (chan->ep_is_in ? "IN" : "OUT"), chnum);
 	dev_vdbg(hsotg->dev, "  chan->start_pkt_count %d\n",
@@ -1505,10 +1505,10 @@ static void dwc2_hc_ahberr_intr(struct dwc2_hsotg *hsotg,
 
 	dwc2_hc_handle_tt_clear(hsotg, chan, qtd);
 
-	hcchar = readl(hsotg->regs + HCCHAR(chnum));
-	hcsplt = readl(hsotg->regs + HCSPLT(chnum));
-	hctsiz = readl(hsotg->regs + HCTSIZ(chnum));
-	hc_dma = readl(hsotg->regs + HCDMA(chnum));
+	hcchar = dwc2_readl(hsotg->regs + HCCHAR(chnum));
+	hcsplt = dwc2_readl(hsotg->regs + HCSPLT(chnum));
+	hctsiz = dwc2_readl(hsotg->regs + HCTSIZ(chnum));
+	hc_dma = dwc2_readl(hsotg->regs + HCDMA(chnum));
 
 	dev_err(hsotg->dev, "AHB ERROR, Channel %d\n", chnum);
 	dev_err(hsotg->dev, "  hcchar 0x%08x, hcsplt 0x%08x\n", hcchar, hcsplt);
@@ -1721,10 +1721,10 @@ static bool dwc2_halt_status_ok(struct dwc2_hsotg *hsotg,
 		 * This code is here only as a check. This condition should
 		 * never happen. Ignore the halt if it does occur.
 		 */
-		hcchar = readl(hsotg->regs + HCCHAR(chnum));
-		hctsiz = readl(hsotg->regs + HCTSIZ(chnum));
-		hcintmsk = readl(hsotg->regs + HCINTMSK(chnum));
-		hcsplt = readl(hsotg->regs + HCSPLT(chnum));
+		hcchar = dwc2_readl(hsotg->regs + HCCHAR(chnum));
+		hctsiz = dwc2_readl(hsotg->regs + HCTSIZ(chnum));
+		hcintmsk = dwc2_readl(hsotg->regs + HCINTMSK(chnum));
+		hcsplt = dwc2_readl(hsotg->regs + HCSPLT(chnum));
 		dev_dbg(hsotg->dev,
 			"%s: chan->halt_status DWC2_HC_XFER_NO_HALT_STATUS,\n",
 			 __func__);
@@ -1748,7 +1748,7 @@ static bool dwc2_halt_status_ok(struct dwc2_hsotg *hsotg,
 	 * when the halt interrupt occurs. Halt the channel again if it does
 	 * occur.
 	 */
-	hcchar = readl(hsotg->regs + HCCHAR(chnum));
+	hcchar = dwc2_readl(hsotg->regs + HCCHAR(chnum));
 	if (hcchar & HCCHAR_CHDIS) {
 		dev_warn(hsotg->dev,
 			 "%s: hcchar.chdis set unexpectedly, hcchar 0x%08x, trying to halt again\n",
@@ -1808,7 +1808,7 @@ static void dwc2_hc_chhltd_intr_dma(struct dwc2_hsotg *hsotg,
 		return;
 	}
 
-	hcintmsk = readl(hsotg->regs + HCINTMSK(chnum));
+	hcintmsk = dwc2_readl(hsotg->regs + HCINTMSK(chnum));
 
 	if (chan->hcint & HCINTMSK_XFERCOMPL) {
 		/*
@@ -1903,7 +1903,7 @@ static void dwc2_hc_chhltd_intr_dma(struct dwc2_hsotg *hsotg,
 				dev_err(hsotg->dev,
 					"hcint 0x%08x, intsts 0x%08x\n",
 					chan->hcint,
-					readl(hsotg->regs + GINTSTS));
+					dwc2_readl(hsotg->regs + GINTSTS));
 				goto error;
 			}
 		}
@@ -1949,6 +1949,24 @@ static void dwc2_hc_chhltd_intr(struct dwc2_hsotg *hsotg,
 	}
 }
 
+/*
+ * Check if the given qtd is still the top of the list (and thus valid).
+ *
+ * If dwc2_hcd_qtd_unlink_and_free() has been called since we grabbed
+ * the qtd from the top of the list, this will return false (otherwise true).
+ */
+static bool dwc2_check_qtd_still_ok(struct dwc2_qtd *qtd, struct dwc2_qh *qh)
+{
+	struct dwc2_qtd *cur_head;
+
+	if (qh == NULL)
+		return false;
+
+	cur_head = list_first_entry(&qh->qtd_list, struct dwc2_qtd,
+				    qtd_list_entry);
+	return (cur_head == qtd);
+}
+
 /* Handles interrupt for a specific Host Channel */
 static void dwc2_hc_n_intr(struct dwc2_hsotg *hsotg, int chnum)
 {
@@ -1958,11 +1976,11 @@ static void dwc2_hc_n_intr(struct dwc2_hsotg *hsotg, int chnum)
 
 	chan = hsotg->hc_ptr_array[chnum];
 
-	hcint = readl(hsotg->regs + HCINT(chnum));
-	hcintmsk = readl(hsotg->regs + HCINTMSK(chnum));
+	hcint = dwc2_readl(hsotg->regs + HCINT(chnum));
+	hcintmsk = dwc2_readl(hsotg->regs + HCINTMSK(chnum));
 	if (!chan) {
 		dev_err(hsotg->dev, "## hc_ptr_array for channel is NULL ##\n");
-		writel(hcint, hsotg->regs + HCINT(chnum));
+		dwc2_writel(hcint, hsotg->regs + HCINT(chnum));
 		return;
 	}
 
@@ -1974,7 +1992,7 @@ static void dwc2_hc_n_intr(struct dwc2_hsotg *hsotg, int chnum)
 			 hcint, hcintmsk, hcint & hcintmsk);
 	}
 
-	writel(hcint, hsotg->regs + HCINT(chnum));
+	dwc2_writel(hcint, hsotg->regs + HCINT(chnum));
 	chan->hcint = hcint;
 	hcint &= hcintmsk;
 
@@ -2031,27 +2049,59 @@ static void dwc2_hc_n_intr(struct dwc2_hsotg *hsotg, int chnum)
 		 */
 		hcint &= ~HCINTMSK_NYET;
 	}
-	if (hcint & HCINTMSK_CHHLTD)
+
+	if (hcint & HCINTMSK_CHHLTD) {
 		dwc2_hc_chhltd_intr(hsotg, chan, chnum, qtd);
-	if (hcint & HCINTMSK_AHBERR)
+		if (!dwc2_check_qtd_still_ok(qtd, chan->qh))
+			goto exit;
+	}
+	if (hcint & HCINTMSK_AHBERR) {
 		dwc2_hc_ahberr_intr(hsotg, chan, chnum, qtd);
-	if (hcint & HCINTMSK_STALL)
+		if (!dwc2_check_qtd_still_ok(qtd, chan->qh))
+			goto exit;
+	}
+	if (hcint & HCINTMSK_STALL) {
 		dwc2_hc_stall_intr(hsotg, chan, chnum, qtd);
-	if (hcint & HCINTMSK_NAK)
+		if (!dwc2_check_qtd_still_ok(qtd, chan->qh))
+			goto exit;
+	}
+	if (hcint & HCINTMSK_NAK) {
 		dwc2_hc_nak_intr(hsotg, chan, chnum, qtd);
-	if (hcint & HCINTMSK_ACK)
+		if (!dwc2_check_qtd_still_ok(qtd, chan->qh))
+			goto exit;
+	}
+	if (hcint & HCINTMSK_ACK) {
 		dwc2_hc_ack_intr(hsotg, chan, chnum, qtd);
-	if (hcint & HCINTMSK_NYET)
+		if (!dwc2_check_qtd_still_ok(qtd, chan->qh))
+			goto exit;
+	}
+	if (hcint & HCINTMSK_NYET) {
 		dwc2_hc_nyet_intr(hsotg, chan, chnum, qtd);
-	if (hcint & HCINTMSK_XACTERR)
+		if (!dwc2_check_qtd_still_ok(qtd, chan->qh))
+			goto exit;
+	}
+	if (hcint & HCINTMSK_XACTERR) {
 		dwc2_hc_xacterr_intr(hsotg, chan, chnum, qtd);
-	if (hcint & HCINTMSK_BBLERR)
+		if (!dwc2_check_qtd_still_ok(qtd, chan->qh))
+			goto exit;
+	}
+	if (hcint & HCINTMSK_BBLERR) {
 		dwc2_hc_babble_intr(hsotg, chan, chnum, qtd);
-	if (hcint & HCINTMSK_FRMOVRUN)
+		if (!dwc2_check_qtd_still_ok(qtd, chan->qh))
+			goto exit;
+	}
+	if (hcint & HCINTMSK_FRMOVRUN) {
 		dwc2_hc_frmovrun_intr(hsotg, chan, chnum, qtd);
-	if (hcint & HCINTMSK_DATATGLERR)
+		if (!dwc2_check_qtd_still_ok(qtd, chan->qh))
+			goto exit;
+	}
+	if (hcint & HCINTMSK_DATATGLERR) {
 		dwc2_hc_datatglerr_intr(hsotg, chan, chnum, qtd);
+		if (!dwc2_check_qtd_still_ok(qtd, chan->qh))
+			goto exit;
+	}
 
+exit:
 	chan->hcint = 0;
 }
 
@@ -2066,7 +2116,7 @@ static void dwc2_hc_intr(struct dwc2_hsotg *hsotg)
 	u32 haint;
 	int i;
 
-	haint = readl(hsotg->regs + HAINT);
+	haint = dwc2_readl(hsotg->regs + HAINT);
 	if (dbg_perio()) {
 		dev_vdbg(hsotg->dev, "%s()\n", __func__);
 
@@ -2134,8 +2184,8 @@ irqreturn_t dwc2_handle_hcd_intr(struct dwc2_hsotg *hsotg)
 				 "DWC OTG HCD Finished Servicing Interrupts\n");
 			dev_vdbg(hsotg->dev,
 				 "DWC OTG HCD gintsts=0x%08x gintmsk=0x%08x\n",
-				 readl(hsotg->regs + GINTSTS),
-				 readl(hsotg->regs + GINTMSK));
+				 dwc2_readl(hsotg->regs + GINTSTS),
+				 dwc2_readl(hsotg->regs + GINTMSK));
 		}
 	}