fs: Fix can_lseek_backward() ...

To quote corresponding man page:

"... Upon successful completion, lseek() returns the resulting offset
location as measured in bytes from the beginning of the file."

Which for lseek(fd, 0, SEEK_SET) would be 0, so returning 'ret' as
final step of the function would mean it'd never return anything but 0
as well. Change the code to explicitly return '1' to fix the problem.

Fixes: 7c3f8d366 ("uimage: fix: add can_lseek_backward and use in uimage_open")
Cc: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/omap'

Merge branch 'for-next/efi'

uimage: fix: add can_lseek_backward and use in uimage_open ...

Since commit ce0cc7fe we support forward seek on tftpfs. This feature
breaks the condition to check rather we open an uimage over tftp. Since
backward seeking is the problem here, we add the function
can_lseek_backward and check for it instead of the simple lseek.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

common: oftree: Add autoenable functionality ...

This patch adds an API to automatically enable either hardware components
with existing device drivers or i2c clients. All functions take a device
tree path to find the hardware and will fix up the node status in the
kernel device tree, if it's accessible.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

common: state: Add function to read state MAC ...

This API function allows to receive a copy of a MAC address from
variables in a state.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

efi-gui: add USB IO Protocol GUID definition ...

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/usbgadget'

Merge branch 'for-next/misc'

of: base: add function to copy a device tree node ...

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

regmap: port regmap_update_bits from linux ...

Port the regmap_update_bits function from linux v4.14-rc1 to barebox.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

elf.h: Use EI_NIDENT instead of numeric value ...

This is an adoption of the linux kernel commit

| commit eb6900f
| Author: Cyrill Gorcunov <gorcunov@gmail.com>
| Date:   Tue Apr 29 01:01:17 2008 -0700
|
|     ELF: Use EI_NIDENT instead of numeric value
|
|     Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
|     Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

usbgadget: fastboot: Allow to automatically export the bbu handlers ...

We have a list of registered handlers which take a barebox update. Do
the next step and allow to automatically export them via fastboot so
that barebox can be updated via fastboot without manually exporting
the partition. Since this may not be desirable in all cases this
behaviour is configurable.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

bbu: Add function to iterate over registered handlers ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

file_list: Add function to get entry by its name ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

file_list: Add function to add an entry to the list ...

Add file_list_add_entry() to add a single entry to a file_list. Then
use it in file_list_parse_one() instead of open coding adding a new
entry.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mmc: allow skipping SD card initialization ...

This patch allows to skip SD card initialization for eMMCs by setting
the "no-sd" property in the host controller device tree node. Avoiding
two SD command timeouts speeds up detection time by well over 200 ms.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/mtd'

Merge branch 'for-next/misc'

Merge branch 'for-next/mips'

Merge branch 'for-next/efi'

asm-generic: partially sync io.h with linux kernel ...

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: base: port of_device_is_big_endian from linux ...

|commit 37786c7
|Author: Kevin Cernekee <cernekee@gmail.com>
|Date:   Thu Apr 9 13:05:14 2015 -0700
|
|    of: Add helper function to check MMIO register endianness
|
|    SoC peripherals can come in several different flavors:
|
|     - little-endian: registers always need to be accessed in LE mode (so the
|       kernel should perform a swap if the CPU is running BE)
|
|     - big-endian: registers always need to be accessed in BE mode (so the
|       kernel should perform a swap if the CPU is running LE)
|
|     - native-endian: the bus will automatically swap accesses, so the kernel
|       should never swap
|
|    Introduce a function that checks an OF device node to see whether it
|    contains a "big-endian" or "native-endian" property.  For the former case,
|    always return true.  For the latter case, return true iff the kernel was
|    built for BE (implying that the BE MMIO accessors do not perform a swap).
|    Otherwise return false, assuming LE registers.
|
|    LE registers are assumed by default because most existing drivers (libahci,
|    serial8250, usb) always use readl/writel in the absence of instructions
|    to the contrary, so that will be our fallback.

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

efi: make sure efi-fs is started in the right order ...

with this parch, EFI System partition will be mounted to /boot
instead of /mnt/diskXX.

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: nand: Only call ONFI get/set features on supported chips ...

Older versions of the ONFI spec do not support get/set features, so
do not call these commands when they are not available.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

atmel_lcdfb: define power_control gpio in platform_data ...

Simplify board specific code by specifying the power_control
gpio direct in platform data.
Move registration of the GPIO to the driver so we no longer
need to duplicate this for each board.

As an intended side-effect there is no longer
any references to platform_data outside atmel_lcdc_register()
so remove it from struct atmel_lcdfb_info

The implementation assumes that GPIO=0 is the same as no power control.
This prevents us from using any GPIO=0 for power control,
but this is not considered a problem for current users.
Future DT users will not have this limitation.

This commit include a fix so we will actually power
down if requested. Previously this was hardcoded to ON.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

filetype: fix file type detection for Barebox MIPS ...

Since there is no "0/" after "barebox" in the file header,
comparison won't stop on the right place.

Fix regression introduced by patch:
|commit 03939c0
|Author: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
|Date:   Tue Jan 22 15:40:36 2013 +0100
|
| filetype: add is_barebox_mips_head support

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

Merge branch 'for-next/mmc'

Merge branch 'for-next/imx'

Merge branch 'for-next/efi'