From: MaJun <majun258@huawei.com>
To: <Catalin.Marinas@arm.com>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>, <Will.Deacon@arm.com>,
<mark.rutland@arm.com>, <marc.zyngier@arm.com>,
<jason@lakedaemon.net>, <tglx@linutronix.de>,
<lizefan@huawei.com>, <huxinwei@huawei.com>,
<dingtianhong@huawei.com>, <zhaojunhua@hisilicon.com>,
<liguozhu@hisilicon.com>, <xuwei5@hisilicon.com>,
<wei.chenwei@hisilicon.com>, <guohanjun@huawei.com>,
<majun258@huawei.com>
Subject: [PATCH] IRQ/Platform-MSI:Increase the maximum MSIs the MSI framework can support.
Date: Mon, 21 Dec 2015 11:18:25 +0800 [thread overview]
Message-ID: <1450667905-2968-1-git-send-email-majun258@huawei.com> (raw)
From: Ma Jun <majun258@huawei.com>
The current MSI framework can only support 256 platform MSIs.
But on Hisilicon platform, some network related devices has about 500
wired interrupts.
To support these devices, we need a new maximum value more than 256.
Signed-off-by: Ma Jun <majun258@huawei.com>
---
drivers/base/platform-msi.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/base/platform-msi.c b/drivers/base/platform-msi.c
index a203896..9c00d3f 100644
--- a/drivers/base/platform-msi.c
+++ b/drivers/base/platform-msi.c
@@ -24,7 +24,7 @@
#include <linux/msi.h>
#include <linux/slab.h>
-#define DEV_ID_SHIFT 24
+#define DEV_ID_SHIFT 22
#define MAX_DEV_MSIS (1 << (32 - DEV_ID_SHIFT))
/*
--
1.7.1
next reply other threads:[~2015-12-21 3:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-21 3:18 MaJun [this message]
2015-12-21 10:43 ` Marc Zyngier
2015-12-22 2:46 ` majun (F)
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