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authorHelge Deller <deller@gmx.de>2013-10-23 23:29:16 +0200
committerHelge Deller <deller@gmx.de>2013-11-07 22:28:26 +0100
commitf6d12eefcda2e4135aa529ab8b5bf2766b4a78dd (patch)
tree595a3fe90daf8c5a5443745507349dff408af5e1 /arch/parisc/kernel/setup.c
parentparisc: remove duplicate define (diff)
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parisc: make udelay() SMP-safe
Each CPU has it's own Control Register 16 (CR16) which is used as time source for the udelay() function. But since the CR16 registers across different CPUs are not synced, we need to recalculate the loop count if we get switched away to ensure that we really delay as much time as requested. Signed-off-by: Helge Deller <deller@gmx.de>
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