linux-kernel - [PATCH] irqchip/gic-v3-its: Avoid parsing _indirect

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Message-ID: <1549776250-4464-1-git-send-email-yuzenghui@huawei.com>
Date:   Sun, 10 Feb 2019 05:24:10 +0000
From:   Zenghui Yu <yuzenghui@...wei.com>
To:     <tglx@...utronix.de>, <jason@...edaemon.net>,
        <marc.zyngier@....com>
CC:     <shankerd@...eaurora.org>, <wanghaibin.wang@...wei.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, Zenghui Yu <yuzenghui@...wei.com>
Subject: [PATCH] irqchip/gic-v3-its: Avoid parsing _indirect_ twice for Device table

In current logic, its_parse_indirect_baser() will be invoked twice
when allocating Device tables. Add a *break* to omit the unnecessary
and annoying (might be ...) invoking.

Signed-off-by: Zenghui Yu <yuzenghui@...wei.com>
---
 drivers/irqchip/irq-gic-v3-its.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index db20e99..9f529a6 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -1946,6 +1946,8 @@ static int its_alloc_tables(struct its_node *its)
 			indirect = its_parse_indirect_baser(its, baser,
 							    psz, &order,
 							    its->device_ids);
+			break;
+
 		case GITS_BASER_TYPE_VCPU:
 			indirect = its_parse_indirect_baser(its, baser,
 							    psz, &order,
-- 
1.8.3.1