kernel: Copy patches from kernel 4.14 to 4.19

This just copies the files from the kernel 4.14 specific folders into
the kernel 4.19 specific folder, no changes are done to the files in
this commit.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

1 files changed, 50 insertions, 0 deletions

diff --git a/target/linux/generic/pending-4.19/171-usb-dwc2-Fix-inefficient-copy-of-unaligned-buffers.patch b/target/linux/generic/pending-4.19/171-usb-dwc2-Fix-inefficient-copy-of-unaligned-buffers.patch
new file mode 100644
index 0000000000..588b571e01
--- /dev/null
+++ b/target/linux/generic/pending-4.19/171-usb-dwc2-Fix-inefficient-copy-of-unaligned-buffers.patch
@@ -0,0 +1,50 @@
+From 81da1738eee68f1961e03bdeb2d60cf0eb4dd713 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Antti=20Sepp=C3=A4l=C3=A4?= <a.seppala@gmail.com>
+Date: Thu, 5 Jul 2018 12:06:18 +0300
+Subject: [PATCH 2/2] usb: dwc2: Fix inefficient copy of unaligned buffers
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Make sure only to copy any actual data rather than the whole buffer,
+when releasing the temporary buffer used for unaligned non-isochronous
+transfers.
+
+Taken directly from commit 0efd937e27d5e ("USB: ehci-tegra: fix inefficient
+copy of unaligned buffers")
+
+Tested with Lantiq xRX200 (MIPS) and RPi Model B Rev 2 (ARM)
+
+Signed-off-by: Antti Seppälä <a.seppala@gmail.com>
+---
+ drivers/usb/dwc2/hcd.c | 12 +++++++++---
+ 1 file changed, 9 insertions(+), 3 deletions(-)
+
+--- a/drivers/usb/dwc2/hcd.c
++++ b/drivers/usb/dwc2/hcd.c
+@@ -2669,6 +2669,7 @@ static int dwc2_alloc_split_dma_aligned_
+ static void dwc2_free_dma_aligned_buffer(struct urb *urb)
+ {
+ 	void *stored_xfer_buffer;
++	size_t length;
+ 
+ 	if (!(urb->transfer_flags & URB_ALIGNED_TEMP_BUFFER))
+ 		return;
+@@ -2677,9 +2678,14 @@ static void dwc2_free_dma_aligned_buffer
+ 	memcpy(&stored_xfer_buffer, urb->transfer_buffer +
+ 	       urb->transfer_buffer_length, sizeof(urb->transfer_buffer));
+ 
+-	if (usb_urb_dir_in(urb))
+-		memcpy(stored_xfer_buffer, urb->transfer_buffer,
+-		       urb->transfer_buffer_length);
++	if (usb_urb_dir_in(urb)) {
++		if (usb_pipeisoc(urb->pipe))
++			length = urb->transfer_buffer_length;
++		else
++			length = urb->actual_length;
++
++		memcpy(stored_xfer_buffer, urb->transfer_buffer, length);
++	}
+ 	kfree(urb->transfer_buffer);
+ 	urb->transfer_buffer = stored_xfer_buffer;
+