From: David Daney <ddaney@caviumnetworks.com>
Date: Wed, 19 May 2010 17:40:53 +0000 (-0700)
Subject: MIPS: Don't overflow cevt-r4k.c calculations at high clock rates.
X-Git-Tag: v2.6.36-rc1~563^2~146
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4d2b11252b92c6aca9f9222ee05e00f7262c2e53;p=pandora-kernel.git

MIPS: Don't overflow cevt-r4k.c calculations at high clock rates.

The 'mult' element of struct clock_event_device must never be wider
than 32-bits.  If it were, it would get truncated when used by
clockevent_delta2ns() when this calls do_div().

We can meet this requirement by using clockevent_set_clock() to set
the MULT and SHIFT values.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1253/
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

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