From: Marc Zyngier Date: Mon, 19 Dec 2016 17:16:45 +0000 (+0000) Subject: irqchip/gic-v3-its: Zero command on allocation X-Git-Tag: v4.14-rc1~1515^2~6^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=34d677a90f0682a26327dbefc0db1cf81647e7bc;p=platform%2Fkernel%2Flinux-rpi.git irqchip/gic-v3-its: Zero command on allocation When reusing commands from the ring buffer, it would be better to zero them out, even if the ITS should ignore the unused fields. Signed-off-by: Marc Zyngier --- diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index ee928de..4a895c6 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -411,6 +411,12 @@ static struct its_cmd_block *its_allocate_entry(struct its_node *its) if (its->cmd_write == (its->cmd_base + ITS_CMD_QUEUE_NR_ENTRIES)) its->cmd_write = its->cmd_base; + /* Clear command */ + cmd->raw_cmd[0] = 0; + cmd->raw_cmd[1] = 0; + cmd->raw_cmd[2] = 0; + cmd->raw_cmd[3] = 0; + return cmd; }