u-boot.git/include/linux/compat.h, branch v2017.07-rc3

treewide: remove unneeded semicolons

2017-06-16T14:11:38+00:00

Signed-off-by: Masahiro Yamada

Update WARN_ON() to return a value

2017-06-01T13:03:06+00:00

In linux v4.9 this returns a value. This saves checking the warning
condition twice in some code.

Update the U-Boot version to do this also.

Signed-off-by: Simon Glass

delay: collect {m, n, u}delay declarations to include/linux/delay.h

2017-01-14T21:46:28+00:00

Currently, mdelay() and udelay() are declared in include/common.h,
while ndelay() in include/linux/compat.h.  It would be nice to
collect them into include/linux/delay.h like Linux.

While we are here, fix the ndelay() implementation; I used the
DIV_ROUND_UP() instead of (x)/1000 because it must wait *longer*
than the given period of time.

Signed-off-by: Masahiro Yamada 
Reviewed-by: Simon Glass

linux/compat.h: Properly implement ndelay fallback

2016-11-28T20:10:34+00:00

Commit c68c62 ("i2c: mvtwsi: Make delay times frequency-dependent")
extensively used the ndelay function with a calculated parameter
which is dependant on the configured frequency of the I2C bus. If
standard speed is employed, the parameter is usually 10000 (10000ns
period length for 100kHz frequency).

But, since the arm architecture does not implement a proper version of
ndelay, the fallback default from include/linux/compat.h is used,
which defines every ndelay as udelay(1). This causes problems for
slower speeds on arm, since the delay time is now 9us too short for
the desired frequency, which leads to random failures of the I2C
interface.

To remedy this, we implement a proper, parameter-aware ndelay fallback
for architectures that don't implement a real ndelay function.

Reported-By: Jason Brown 
To: Tom Rini 
To: Heiko Schocher 
Signed-off-by: Mario Six

Move ENOTSUPP defines to include/linux/errno.h

2016-09-24T02:25:43+00:00

Collect a couple of duplicated defines into a single place.

Signed-off-by: Masahiro Yamada

linux/compat.h: add dev_warn()

2016-06-12T21:49:38+00:00

In order to prevent build errors for copied code from linux introduce
dev_warn().

Suggested-by: Scott Wood 
Signed-off-by: Andreas Bießmann 
Acked-by: Simon Glass

compat: Remove is_power_of_2() definition

2015-11-05T21:46:59+00:00

Use the is_power_of_2() definition from log2.h to align with the
kernel implementation.

Signed-off-by: Fabio Estevam 
Reviewed-by: Tom Rini 
Reviewed-by: Heiko Schocher 
Reviewed-by: Jagan Teki

linux, compat: add missing definitions for ubi

2015-10-26T08:22:02+00:00

add missing definitions for the ubi/ubifs sync
with linux 4.2, also change "#define kfree ..."
into a static inline, so prevent ubi compile error:

   CC      drivers/mtd/ubi/fastmap.o
drivers/mtd/ubi/fastmap.c: In function 'scan_pool':
drivers/mtd/ubi/fastmap.c:475:3: error: called object 'free' is not a function

Signed-off-by: Heiko Schocher

linux_compat: handle __GFP_ZERO in kmalloc()

2015-07-22T13:30:44+00:00

Currently, kzalloc() returns zero-filled memory, while kmalloc()
simply ignores the second argument and never fills the memory
area with zeros.

I want kmalloc(size, __GFP_ZERO) to behave as kzalloc() does,
which will make it easier to add more memory allocator variants.

With the introduction of __GFP_ZERO flag, going forward, kzmalloc()
variants can fall back to kmalloc() enabling the __GFP_ZERO flag.

Signed-off-by: Masahiro Yamada 
Reviewed-by: Heiko Schocher 
Acked-by: Simon Glass 
Reviewed-by: Lukasz Majewski

linux_compat: move vzalloc() to header file as an inline function

2015-07-22T13:30:39+00:00

The vzalloc(size) is equivalent to kzalloc(size, 0).  Move it to
include/linux/compat.h as an inline function in order to avoid the
function call overhead.

Signed-off-by: Masahiro Yamada 
Reviewed-by: Heiko Schocher 
Acked-by: Simon Glass