linux-kernel - [PATCH 2/2] x86: of: define irq functions to allow drivers/of/* to build on x86

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 10 Sep 2010 06:01:51 -0700
From:	Andres Salomon <dilinger@...ued.net>
To:	devicetree-discuss@...ts.ozlabs.org
Cc:	x86@...nel.org, tglx@...utronix.de, mingo@...hat.com,
	hpa@...or.com, Mitch Bradley <wmb@...top.org>,
	linux-kernel@...r.kernel.org, grant.likely@...retlab.ca,
	Stephen Neuendorffer <stephen.neuendorffer@...inx.com>
Subject: [PATCH 2/2] x86: of: define irq functions to allow drivers/of/* to
 build on x86


 - Define a stub irq_create_of_mapping for x86 as a stop-gap solution until
   drivers/of/irq is further along.
 - Define irq_dispose_mapping for x86 to appease of_i2c.c

Signed-off-by: Andres Salomon <dilinger@...ued.net>
---
 arch/x86/include/asm/irq.h |    3 +++
 arch/x86/kernel/irq.c      |    8 ++++++++
 include/linux/of_irq.h     |    1 +
 3 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/irq.h b/arch/x86/include/asm/irq.h
index 5458380..8ffa06f 100644
--- a/arch/x86/include/asm/irq.h
+++ b/arch/x86/include/asm/irq.h
@@ -10,6 +10,9 @@
 #include <asm/apicdef.h>
 #include <asm/irq_vectors.h>
 
+/* Even though we don't support this, supply it to appease OF */
+static inline void irq_dispose_mapping(unsigned int virq) { }
+
 static inline int irq_canonicalize(int irq)
 {
 	return ((irq == 2) ? 9 : irq);
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 91fd0c7..b78bb6f 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -4,6 +4,7 @@
 #include <linux/cpu.h>
 #include <linux/interrupt.h>
 #include <linux/kernel_stat.h>
+#include <linux/of.h>
 #include <linux/seq_file.h>
 #include <linux/smp.h>
 #include <linux/ftrace.h>
@@ -275,6 +276,13 @@ void smp_x86_platform_ipi(struct pt_regs *regs)
 
 EXPORT_SYMBOL_GPL(vector_used_by_percpu_irq);
 
+unsigned int irq_create_of_mapping(struct device_node *controller,
+		const u32 *intspec, unsigned int intsize)
+{
+	return intspec[0] + 1;
+}
+EXPORT_SYMBOL_GPL(irq_create_of_mapping);
+
 #ifdef CONFIG_HOTPLUG_CPU
 /* A cpu has been removed from cpu_online_mask.  Reset irq affinities. */
 void fixup_irqs(void)
diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
index 090cbaa..109e013 100644
--- a/include/linux/of_irq.h
+++ b/include/linux/of_irq.h
@@ -5,6 +5,7 @@
 struct of_irq;
 #include <linux/types.h>
 #include <linux/errno.h>
+#include <linux/irq.h>
 #include <linux/ioport.h>
 #include <linux/of.h>
 
-- 
1.5.6.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/