From mboxrd@z Thu Jan 1 00:00:00 1970 From: heiko@sntech.de (Heiko =?ISO-8859-1?Q?St=FCbner?=) Date: Thu, 17 Sep 2015 11:43:44 +0200 Subject: [PATCH 1/3] clocksource: rockchip: Make the driver more readability and compatible In-Reply-To: <55FA87AA.4040807@gmail.com> References: <1442476272-31723-1-git-send-email-wxt@rock-chips.com> <55FA83D5.9010504@linaro.org> <55FA87AA.4040807@gmail.com> Message-ID: <1595765.iIuZsGWCYG@diego> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi, Am Donnerstag, 17. September 2015, 17:28:10 schrieb Caesar Wang: > >> The problem was different semantics of dsb on btw arm32 and arm64, > >> Here we can convert the dsb with insteading of dsb(sy). > > > > What happens to ARM32 then ? > > The dsb() is ok for ARM32, the ARM32/64 are OK if we can convert the > dsb() to dsb(sy). > I believe all drivers with 'dsb()' have same issue on ARM64 platform. correct ... I read this up in the ARM docs 2 days ago too for something. The "sy" param is the default, which you are allow to omit, so on arm32 dsb() and dsb(sy) are the same. Heiko