Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/usb/early/ehci-dbgp.c b/drivers/usb/early/ehci-dbgp.c
index d633c2a..ea0d531 100644
--- a/drivers/usb/early/ehci-dbgp.c
+++ b/drivers/usb/early/ehci-dbgp.c
@@ -631,28 +631,28 @@
 		if (!(portsc & PORT_RESET))
 			break;
 	}
-		if (portsc & PORT_RESET) {
-			/* force reset to complete */
-			loop = 100 * 1000;
-			writel(portsc & ~(PORT_RWC_BITS | PORT_RESET),
-				&ehci_regs->port_status[port - 1]);
-			do {
-				udelay(1);
-				portsc = readl(&ehci_regs->port_status[port-1]);
-			} while ((portsc & PORT_RESET) && (--loop > 0));
-		}
+	if (portsc & PORT_RESET) {
+		/* force reset to complete */
+		loop = 100 * 1000;
+		writel(portsc & ~(PORT_RWC_BITS | PORT_RESET),
+			&ehci_regs->port_status[port - 1]);
+		do {
+			udelay(1);
+			portsc = readl(&ehci_regs->port_status[port-1]);
+		} while ((portsc & PORT_RESET) && (--loop > 0));
+	}
 
-		/* Device went away? */
-		if (!(portsc & PORT_CONNECT))
-			return -ENOTCONN;
+	/* Device went away? */
+	if (!(portsc & PORT_CONNECT))
+		return -ENOTCONN;
 
-		/* bomb out completely if something weird happened */
-		if ((portsc & PORT_CSC))
-			return -EINVAL;
+	/* bomb out completely if something weird happened */
+	if ((portsc & PORT_CSC))
+		return -EINVAL;
 
-		/* If we've finished resetting, then break out of the loop */
-		if (!(portsc & PORT_RESET) && (portsc & PORT_PE))
-			return 0;
+	/* If we've finished resetting, then break out of the loop */
+	if (!(portsc & PORT_RESET) && (portsc & PORT_PE))
+		return 0;
 	return -EBUSY;
 }
 
diff --git a/drivers/usb/early/xhci-dbc.c b/drivers/usb/early/xhci-dbc.c
index e15e896..cac9911 100644
--- a/drivers/usb/early/xhci-dbc.c
+++ b/drivers/usb/early/xhci-dbc.c
@@ -12,7 +12,7 @@
 #include <linux/console.h>
 #include <linux/pci_regs.h>
 #include <linux/pci_ids.h>
-#include <linux/bootmem.h>
+#include <linux/memblock.h>
 #include <linux/io.h>
 #include <asm/pci-direct.h>
 #include <asm/fixmap.h>
@@ -94,7 +94,7 @@
 {
 	void *virt;
 
-	virt = alloc_bootmem_pages_nopanic(PAGE_SIZE);
+	virt = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
 	if (!virt)
 		return NULL;
 
@@ -191,7 +191,7 @@
 	if (!seg)
 		return;
 
-	free_bootmem(seg->dma, PAGE_SIZE);
+	memblock_free(seg->dma, PAGE_SIZE);
 	ring->segment = NULL;
 }
 
@@ -533,8 +533,6 @@
 
 	xdbc_mem_init();
 
-	mmiowb();
-
 	ret = xdbc_start();
 	if (ret < 0)
 		goto reset_out;
@@ -587,8 +585,6 @@
 
 	xdbc_mem_init();
 
-	mmiowb();
-
 	ret = xdbc_start();
 	if (ret < 0) {
 		writel(0, &xdbc.xdbc_reg->control);
@@ -675,10 +671,10 @@
 		xdbc_free_ring(&xdbc.in_ring);
 
 		if (xdbc.table_dma)
-			free_bootmem(xdbc.table_dma, PAGE_SIZE);
+			memblock_free(xdbc.table_dma, PAGE_SIZE);
 
 		if (xdbc.out_dma)
-			free_bootmem(xdbc.out_dma, PAGE_SIZE);
+			memblock_free(xdbc.out_dma, PAGE_SIZE);
 
 		xdbc.table_base = NULL;
 		xdbc.out_buf = NULL;
@@ -717,17 +713,14 @@
 
 static void xdbc_handle_tx_event(struct xdbc_trb *evt_trb)
 {
-	size_t remain_length;
 	u32 comp_code;
 	int ep_id;
 
 	comp_code	= GET_COMP_CODE(le32_to_cpu(evt_trb->field[2]));
-	remain_length	= EVENT_TRB_LEN(le32_to_cpu(evt_trb->field[2]));
 	ep_id		= TRB_TO_EP_ID(le32_to_cpu(evt_trb->field[3]));
 
 	switch (comp_code) {
 	case COMP_SUCCESS:
-		remain_length = 0;
 	case COMP_SHORT_PACKET:
 		break;
 	case COMP_TRB_ERROR:
@@ -1000,8 +993,8 @@
 	xdbc_free_ring(&xdbc.evt_ring);
 	xdbc_free_ring(&xdbc.out_ring);
 	xdbc_free_ring(&xdbc.in_ring);
-	free_bootmem(xdbc.table_dma, PAGE_SIZE);
-	free_bootmem(xdbc.out_dma, PAGE_SIZE);
+	memblock_free(xdbc.table_dma, PAGE_SIZE);
+	memblock_free(xdbc.out_dma, PAGE_SIZE);
 	writel(0, &xdbc.xdbc_reg->control);
 	early_iounmap(xdbc.xhci_base, xdbc.xhci_length);