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irq/platform-MSI: Increase the maximum MSIs the MSI framework can support

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 and align with MSI-X increase the maximum to 2048
devices.

Signed-off-by: Ma Jun <majun258@huawei.com>
Cc: <Catalin.Marinas@arm.com>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: <Will.Deacon@arm.com>
Cc: <mark.rutland@arm.com>
Cc: <marc.zyngier@arm.com>
Cc: <jason@lakedaemon.net>
Cc: <lizefan@huawei.com>
Cc: <huxinwei@huawei.com>
Cc: <dingtianhong@huawei.com>
Cc: <liguozhu@hisilicon.com>
Cc: <guohanjun@huawei.com>
Link: http://lkml.kernel.org/r/1450752442-9392-1-git-send-email-majun258@huawei.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
MaJun 9 years ago
parent
commit
aff5e06b0d
1 changed files with 1 additions and 1 deletions
  1. 1 1
      drivers/base/platform-msi.c

+ 1 - 1
drivers/base/platform-msi.c

@@ -24,7 +24,7 @@
 #include <linux/msi.h>
 #include <linux/msi.h>
 #include <linux/slab.h>
 #include <linux/slab.h>
 
 
-#define DEV_ID_SHIFT	24
+#define DEV_ID_SHIFT	21
 #define MAX_DEV_MSIS	(1 << (32 - DEV_ID_SHIFT))
 #define MAX_DEV_MSIS	(1 << (32 - DEV_ID_SHIFT))
 
 
 /*
 /*