[U-Boot] [PATCH 0/3] make ERR_PTR/PTR_ERR architecture specific

Simon Goldschmidt simon.k.r.goldschmidt at gmail.com
Tue Oct 22 19:29:45 UTC 2019

Some U-Boot pointers have redundant information, so we can use a scheme
where we can return either an error code or a pointer with the same
return value. The default implementation just casts the pointer to a
number, however, this may fail on platforms where the end of the address
range is used for valid pointers (e.g. 0xffffff00 is a valid heap pointer
in socfpga SPL). For such platforms, this value provides an upper range
of those error pointer values - up to 'MAX_ERRNO' bytes below this value
must be unused/invalid addresses.

Simon Goldschmidt (3):
  Kconfig add config ERR_PTR_OFFSET
  linux err: make ERR_PTR/PTR_ERR architecture specific
  arm: socfpga: gen5: fix ERR_PTR_OFFSET

 Kconfig                       | 14 ++++++++++++++
 arch/arm/mach-socfpga/Kconfig |  3 +++
 include/linux/err.h           |  8 ++++----
 3 files changed, 21 insertions(+), 4 deletions(-)


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