aboutsummaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorMark Fortescue <mark@mtfhpc.demon.co.uk>2007-08-30 06:07:11 +0200
committerAdrian Bunk <bunk@stusta.de>2007-08-30 06:07:11 +0200
commiteb845a0bad412b7caa04383715d59399de8b5c11 (patch)
treec76ed873c1a9f188d7a61b17c33328b16a7f3577 /include
parent7380487e55320420da6277820f2825ec456406eb (diff)
[SPARC32]: Fix rounding errors in ndelay/udelay implementation.
__ndelay and __udelay have not been delayung >= specified time. The problem with __ndelay has been tacked down to the rounding of the multiplier constant. By changing this, delays > app 18us are correctly calculated. The problem with __udelay has also been tracked down to rounding issues. Changing the multiplier constant (to match that used in sparc64) corrects for large delays and adding in a rounding constant corrects for trunctaion errors in the claculations. Many short delays will return without looping. This is not an error as there is the fixed delay of doing all the maths to calculate the loop count. Signed-off-by: Mark Fortescue <mark@mtfhpc.demon.co.uk> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Adrian Bunk <bunk@kernel.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions