[4.2.y-ckt stable] Patch "irqchip/versatile-fpga: Fix PCI IRQ mapping on Versatile PB" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    irqchip/versatile-fpga: Fix PCI IRQ mapping on Versatile PB

to the linux-4.2.y-queue branch of the 4.2.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-4.2.y-queue

This patch is scheduled to be released in version 4.2.8-ckt2.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 4.2.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

---8<------------------------------------------------------------

>From 151d8c8c42784d7bd426dbf6e7b386bd6a4a5c58 Mon Sep 17 00:00:00 2001
From: Guillaume Delbergue <guillaume.delbergue at greensocs.com>
Date: Tue, 1 Dec 2015 18:55:51 +0100
Subject: irqchip/versatile-fpga: Fix PCI IRQ mapping on Versatile PB

commit d5d4fdd86f5759924fe54efa793e22eccf508db6 upstream.

This patch is specifically for PCI support on the Versatile PB board using
a DT. Currently, the dynamic IRQ mapping is broken when using DTs. For
example, on QEMU, the SCSI driver is unable to request the IRQ. To fix
this issue, this patch replaces the current dynamic mechanism with a
static value as is done in the non-DT case.

Signed-off-by: Guillaume Delbergue <guillaume.delbergue at greensocs.com>
Signed-off-by: Arnd Bergmann <arnd at arndb.de>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 drivers/irqchip/irq-versatile-fpga.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/irqchip/irq-versatile-fpga.c b/drivers/irqchip/irq-versatile-fpga.c
index 888111b..18822f0 100644
--- a/drivers/irqchip/irq-versatile-fpga.c
+++ b/drivers/irqchip/irq-versatile-fpga.c
@@ -210,7 +210,12 @@ int __init fpga_irq_of_init(struct device_node *node,
 		parent_irq = -1;
 	}

+#ifdef CONFIG_ARCH_VERSATILE
+	fpga_irq_init(base, node->name, IRQ_SIC_START, parent_irq, valid_mask,
+				  node);
+#else
 	fpga_irq_init(base, node->name, 0, parent_irq, valid_mask, node);
+#endif

 	writel(clear_mask, base + IRQ_ENABLE_CLEAR);
 	writel(clear_mask, base + FIQ_ENABLE_CLEAR);
--
1.9.1