This is a note to let you know that I've just added the patch titled
USB: io_ti: fix firmware download on big-endian machines (part 2)
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-io_ti-fix-firmware-download-on-big-endian-machines-part-2.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c03890ff5e24a4bf59059f2d179f427559b7330a Mon Sep 17 00:00:00 2001
From: Johan Hovold <jhovold@xxxxxxxxx>
Date: Sat, 26 Apr 2014 11:53:44 +0200
Subject: USB: io_ti: fix firmware download on big-endian machines (part 2)
From: Johan Hovold <jhovold@xxxxxxxxx>
commit c03890ff5e24a4bf59059f2d179f427559b7330a upstream.
A recent patch that purported to fix firmware download on big-endian
machines failed to add the corresponding sparse annotation to the
i2c-header. This was reported by the kbuild test robot.
Adding the appropriate annotation revealed another endianess bug related
to the i2c-header Size-field in a code path that is exercised when the
firmware is actually being downloaded (and not just verified and left
untouched unless older than the firmware at hand).
This patch adds the required sparse annotation to the i2c-header and
makes sure that the Size-field is sent in little-endian byte order
during firmware download also on big-endian machines.
Note that this patch is only compile-tested, but that there is no
functional change for little-endian systems.
Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx>
Cc: Ludovic Drolez <ldrolez@xxxxxxxxxx>
Signed-off-by: Johan Hovold <jhovold@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/serial/io_ti.c | 2 +-
drivers/usb/serial/io_usbvend.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/usb/serial/io_ti.c
+++ b/drivers/usb/serial/io_ti.c
@@ -915,7 +915,7 @@ static int build_i2c_fw_hdr(__u8 *header
firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
- i2c_header->Size = (__u16)buffer_size;
+ i2c_header->Size = cpu_to_le16(buffer_size);
i2c_header->CheckSum = cs;
firmware_rec->Ver_Major = OperationalMajorVersion;
firmware_rec->Ver_Minor = OperationalMinorVersion;
--- a/drivers/usb/serial/io_usbvend.h
+++ b/drivers/usb/serial/io_usbvend.h
@@ -594,7 +594,7 @@ struct edge_boot_descriptor {
struct ti_i2c_desc {
__u8 Type; // Type of descriptor
- __u16 Size; // Size of data only not including header
+ __le16 Size; // Size of data only not including header
__u8 CheckSum; // Checksum (8 bit sum of data only)
__u8 Data[0]; // Data starts here
} __attribute__((packed));
Patches currently in stable-queue which might be from jhovold@xxxxxxxxx are
queue-3.4/usb-serial-option-add-support-for-novatel-e371-pcie-card.patch
queue-3.4/usb-ftdi_sio-add-novatech-orionlxm-product-id.patch
queue-3.4/usb-io_ti-fix-firmware-download-on-big-endian-machines-part-2.patch
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