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(parent: b106229) | patch
clk: atlas7: fix integer overflow in dto rate calculation
authorYibo Cai <yibo.cai@csr.com>
Tue, 4 Aug 2015 14:45:28 +0000 (14:45 +0000)
committerMichael Turquette <mturquette@baylibre.com>
Mon, 24 Aug 2015 23:49:06 +0000 (16:49 -0700)
commit6132e89aef51df044246b5aef822144217794ae1
treea4fe32bdd7218f86792eb8b5d26daa2de417200btree | snapshot
parentb1062298fea59dca23cdbcafaa5bed79c273d88fcommit | diff
clk: atlas7: fix integer overflow in dto rate calculation

I cannot believe that I spend quite a lot time in finding this bug.
It seems a pitfall people tend to fall in.

In "int64 = int32 * int32", conversion from 32-bits to 64-bits comes
after the multiplication. So this statement may not work as expected.

Signed-off-by: Yibo Cai <yibo.cai@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
drivers/clk/sirf/clk-atlas7.c diff | blob | history
Domain: System / Kernel;