tree 1a7f03d7541768a9d2b4b25fab2ee07eec37c268
parent 2f09719af705db56032ae480a2d9c32c2a3fcbd3
author Stuart Swales <stuart.swales.croftnuisk@gmail.com> 1300836905 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1300841057 -0700

adfs: improve timestamp precision

ADFS (FileCore) storage complies with the RISC OS timestamp specification
(40-bit centiseconds since 01 Jan 1900 00:00:00).  It is desirable that
stored timestamp precision be maintained to facilitate a precise copy of
data and metadata from a hard disc (or image thereof) into a RISC OS
emulator (such as RPCEmu).

This patch implements a full-precision conversion from ADFS to Unix
timestamp as the existing driver, for ease of calculation with old 32-bit
compilers, uses the common trick of shifting the 40-bits representing
centiseconds around into 32-bits representing seconds thereby losing
precision.

Signed-off-by: Stuart Swales<stuart.swales.croftnuisk@gmail.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>