From mboxrd@z Thu Jan 1 00:00:00 1970 From: will.deacon@arm.com (Will Deacon) Date: Wed, 4 Jan 2017 17:33:46 +0000 Subject: [Patch v2 2/2] firmware: qcom: scm: Fix interrupted SCM calls In-Reply-To: <1483054046-3327-3-git-send-email-andy.gross@linaro.org> References: <1483054046-3327-1-git-send-email-andy.gross@linaro.org> <1483054046-3327-3-git-send-email-andy.gross@linaro.org> Message-ID: <20170104173346.GN18193@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thu, Dec 29, 2016 at 05:27:26PM -0600, Andy Gross wrote: > This patch adds a Qualcomm specific quirk to the arm_smccc_smc call. > > On Qualcomm ARM64 platforms, the SMC call can return before it has > completed. If this occurs, the call can be restarted, but it requires > using the returned session ID value from the interrupted SMC call. > > The quirk stores off the session ID from the interrupted call in the > quirk structure so that it can be used by the caller. > > This patch folds in a fix given by Sricharan R: > https://lkml.org/lkml/2016/9/28/272 > > Signed-off-by: Andy Gross > --- > arch/arm64/kernel/smccc-call.S | 9 ++++++++- > drivers/firmware/qcom_scm-64.c | 13 ++++++++++--- > include/linux/arm-smccc.h | 11 ++++++++--- > 3 files changed, 26 insertions(+), 7 deletions(-) Reviewed-by: Will Deacon Thanks for sticking with this, it looks good to me now. Will