xavi/android_kernel_m2note/lib/mpi, branch ng-7.1.2

Revert "GCC: Fix up for gcc 5+"

2018-11-29T23:02:49+00:00

This reverts commit ff505baaf412985af758d5820cd620ed9f1a7e05.

GCC: Fix up for gcc 5+

2018-11-29T11:38:19+00:00

Signed-off-by: mydongistiny Signed-off-by: Mister Oyster

lib/mpi: use "static inline" instead of "extern inline"

2017-12-22T15:23:44+00:00

When we use CONFIG_PROFILE_ALL_BRANCHES, every 'if()' introduces a static variable, but that is not allowed in 'extern inline' functions: mpi-inline.h:116:204: warning: '______f' is static but declared in inline function 'mpihelp_sub' which is not static mpi-inline.h:113:184: warning: '______f' is static but declared in inline function 'mpihelp_sub' which is not static mpi-inline.h:70:184: warning: '______f' is static but declared in inline function 'mpihelp_add' which is not static mpi-inline.h:56:204: warning: '______f' is static but declared in inline function 'mpihelp_add_1' which is not static This changes the MPI code to use 'static inline' instead, to get rid of hundreds of warnings. Signed-off-by: Arnd Bergmann Signed-off-by: Herbert Xu

lib/mpi: avoid assembler warning

2017-12-22T15:23:44+00:00

A wrapper around the umull assembly instruction might reuse the input register as an output, which is undefined on some ARM machines, as pointed out by this assembler warning: CC lib/mpi/generic_mpih-mul1.o /tmp/ccxJuxIy.s: Assembler messages: /tmp/ccxJuxIy.s:53: rdhi, rdlo and rm must all be different CC lib/mpi/generic_mpih-mul2.o /tmp/ccI0scAD.s: Assembler messages: /tmp/ccI0scAD.s:53: rdhi, rdlo and rm must all be different CC lib/mpi/generic_mpih-mul3.o /tmp/ccMvVQcp.s: Assembler messages: /tmp/ccMvVQcp.s:53: rdhi, rdlo and rm must all be different This changes the constraints to force different registers to be used as output. Signed-off-by: Arnd Bergmann Signed-off-by: Herbert Xu

lib/mpi: Endianness fix

2017-12-22T15:23:44+00:00

The limbs are integers in the host endianness, so we can't simply iterate over the individual bytes. The current code happens to work on little-endian, because the order of the limbs in the MPI array is the same as the order of the bytes in each limb, but it breaks on big-endian. Fixes: 0f74fbf77d45 ("MPI: Fix mpi_read_buffer") Signed-off-by: Michal Marek Signed-off-by: Herbert Xu

lib/mpi: only require buffers as big as needed for the integer

2017-12-22T15:23:43+00:00

Since mpi_write_to_sgl and mpi_read_buffer explicitly left-align the integers being written it makes no sense to require a buffer big enough for the number + the leading zero bytes which are not written. The error returned also doesn't convey any information. So instead require only the size needed and return -EOVERFLOW to signal when buffer too short. Signed-off-by: Andrew Zaborowski Signed-off-by: Herbert Xu

lib/mpi: fix off by one in mpi_read_raw_from_sgl

2017-04-11T08:59:43+00:00

The patch fixes the analysis of the input data which contains an off by one. The issue is visible when the SGL contains one byte per SG entry. The code for checking for zero bytes does not operate on the data byte. Signed-off-by: Stephan Mueller Signed-off-by: Herbert Xu

move count_zeroes.h out of asm-generic

2017-04-11T08:59:43+00:00

This header contains a few helpers currenly only used by the mpi implementation, and not default implementation of architecture code. Signed-off-by: Christoph Hellwig Signed-off-by: Arnd Bergmann

lib/mpi: Add mpi sgl helpers

2017-04-11T08:59:43+00:00

Add mpi_read_raw_from_sgl and mpi_write_to_sgl helpers. Signed-off-by: Tadeusz Struk Signed-off-by: Herbert Xu

MPI: Fix mpi_read_buffer

2017-04-11T08:59:42+00:00

Change mpi_read_buffer to return a number without leading zeros so that mpi_read_buffer and mpi_get_buffer return the same thing. Signed-off-by: Tadeusz Struk Signed-off-by: Herbert Xu