linux/lib/mpi, branch v3.10.2

lib/mpi/mpicoder.c: looping issue, need stop when equal to zero, found by 'EXTRA_FLAGS=-W'.

2013-06-12T23:29:44Z

For 'while' looping, need stop when 'nbytes == 0', or will cause issue. ('nbytes' is size_t which is always bigger or equal than zero). The related warning: (with EXTRA_CFLAGS=-W) lib/mpi/mpicoder.c:40:2: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] Signed-off-by: Chen Gang Cc: Rusty Russell Cc: David Howells Cc: James Morris Cc: Andy Shevchenko Acked-by: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

MPILIB: disable usage of floating point registers on parisc

2013-05-24T20:30:11Z

The umul_ppmm() macro for parisc uses the xmpyu assembler statement which does calculation via a floating point register. But usage of floating point registers inside the Linux kernel are not allowed and gcc will stop compilation due to the -mdisable-fpregs compiler option. Fix this by disabling the umul_ppmm() and udiv_qrnnd() macros. The mpilib will then use the generic built-in implementations instead. Signed-off-by: Helge Deller

mpilib: use DIV_ROUND_UP and remove unused macros

2013-02-01T05:28:32Z

Remove MIN, MAX and ABS macros that are duplicates kernel's native implementation. Signed-off-by: Andy Shevchenko Signed-off-by: James Morris

MPI: Fix compilation on MIPS with GCC 4.4 and newer

2012-11-23T17:57:17Z

Since 4.4 GCC on MIPS no longer recognizes the "h" constraint, leading to this build failure: CC lib/mpi/generic_mpih-mul1.o lib/mpi/generic_mpih-mul1.c: In function 'mpihelp_mul_1': lib/mpi/generic_mpih-mul1.c:50:3: error: impossible constraint in 'asm' This patch updates MPI with the latest umul_ppm implementations for MIPS. Signed-off-by: Manuel Lauss Cc: Linux-MIPS Cc: Dmitry Kasatkin Cc: James Morris Patchwork: https://patchwork.linux-mips.org/patch/4612/ Signed-off-by: Ralf Baechle

MPILIB: Provide a function to read raw data into an MPI

2012-10-08T03:20:21Z

Provide a function to read raw data of a predetermined size into an MPI rather than expecting the size to be encoded within the data. The data is assumed to represent an unsigned integer, and the resulting MPI will be positive. The function looks like this: MPI mpi_read_raw_data(const void *, size_t); This is useful for reading ASN.1 integer primitives where the length is encoded in the ASN.1 metadata. Signed-off-by: David Howells Signed-off-by: Rusty Russell

MPILIB: Reinstate mpi_cmp[_ui]() and export for RSA signature verification

2012-10-08T03:20:15Z

Reinstate and export mpi_cmp() and mpi_cmp_ui() from the MPI library for use by RSA signature verification as per RFC3447 section 5.2.2 step 1. Signed-off-by: David Howells Signed-off-by: Rusty Russell

MPILIB: Provide count_leading/trailing_zeros() based on arch functions

2012-10-08T03:20:11Z

Provide count_leading/trailing_zeros() macros based on extant arch bit scanning functions rather than reimplementing from scratch in MPILIB. Whilst we're at it, turn count_foo_zeros(n, x) into n = count_foo_zeros(x). Also move the definition to asm-generic as other people may be interested in using it. Signed-off-by: David Howells Cc: David S. Miller Cc: Dmitry Kasatkin Cc: Arnd Bergmann Signed-off-by: Rusty Russell

Remove unused code from MPI library

2012-05-26T01:51:03Z

MPI library is used by RSA verification implementation. Few files contains functions which are never called. James Morris has asked to remove all of them. Signed-off-by: Dmitry Kasatkin Requested-by: James Morris Signed-off-by: James Morris

Revert "crypto: GnuPG based MPI lib - additional sources (part 4)"

2012-05-26T01:50:44Z

This reverts commit 7e8dec918ef8e0f68b4937c3c50fa57002077a4d. RSA verification implementation does not use this code. James Morris has asked to remove that. Signed-off-by: Dmitry Kasatkin Requested-by: James Morris Signed-off-by: James Morris

mpi: Avoid using freed pointer in mpi_lshift_limbs()

2012-04-18T02:14:28Z

At the start of the function we assign 'a->d' to 'ap'. Then we use the RESIZE_IF_NEEDED macro on 'a' - this may free 'a->d' and replace it with newly allocaetd storage. In that case, we'll be operating on freed memory further down in the function when we index into 'ap[]'. Since we don't actually need 'ap' until after the use of the RESIZE_IF_NEEDED macro we can just delay the assignment to it until after we've potentially resized, thus avoiding the issue. While I was there anyway I also changed the integer variable 'n' to be const. It might as well be since we only assign to it once and use it as a constant, and then the compiler will tell us if we ever assign to it in the future. Signed-off-by: Jesper Juhl Acked-by: Dmitry Kasatkin Signed-off-by: James Morris