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-rw-r--r--target/linux/generic/pending-4.19/171-usb-dwc2-Fix-inefficient-copy-of-unaligned-buffers.patch50
1 files changed, 0 insertions, 50 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
deleted file mode 100644
index 588b571e01..0000000000
--- a/target/linux/generic/pending-4.19/171-usb-dwc2-Fix-inefficient-copy-of-unaligned-buffers.patch
+++ /dev/null
@@ -1,50 +0,0 @@
-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;
-