1 files changed, 27 insertions, 18 deletions

diff --git a/arch/sh/kernel/cpu/sh4a/setup-shx3.c b/arch/sh/kernel/cpu/sh4a/setup-shx3.c
index e848443deeb9..c7ba9166e18a 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-shx3.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-shx3.c
@@ -15,6 +15,15 @@
 #include <linux/sh_timer.h>
 #include <asm/mmzone.h>
 
+/*
+ * This intentionally only registers SCIF ports 0, 1, and 3. SCIF 2
+ * INTEVT values overlap with the FPU EXPEVT ones, requiring special
+ * demuxing in the exception dispatch path.
+ *
+ * As this overlap is something that never should have made it in to
+ * silicon in the first place, we just refuse to deal with the port at
+ * all rather than adding infrastructure to hack around it.
+ */
 static struct plat_sci_port sci_platform_data[] = {
         {
                 .mapbase        = 0xffc30000,
@@ -27,11 +36,6 @@ static struct plat_sci_port sci_platform_data[] = {
                 .type           = PORT_SCIF,
                 .irqs           = { 44, 45, 47, 46 },
         }, {
-                .mapbase        = 0xffc50000,
-                .flags          = UPF_BOOT_AUTOCONF,
-                .type           = PORT_SCIF,
-                .irqs           = { 48, 49, 51, 50 },
-        }, {
                 .mapbase        = 0xffc60000,
                 .flags          = UPF_BOOT_AUTOCONF,
                 .type           = PORT_SCIF,
@@ -268,7 +272,11 @@ enum {
         UNUSED = 0,
 
         /* interrupt sources */
-        IRL, IRQ0, IRQ1, IRQ2, IRQ3,
+        IRL_LLLL, IRL_LLLH, IRL_LLHL, IRL_LLHH,
+        IRL_LHLL, IRL_LHLH, IRL_LHHL, IRL_LHHH,
+        IRL_HLLL, IRL_HLLH, IRL_HLHL, IRL_HLHH,
+        IRL_HHLL, IRL_HHLH, IRL_HHHL,
+        IRQ0, IRQ1, IRQ2, IRQ3,
         HUDII,
         TMU0, TMU1, TMU2, TMU3, TMU4, TMU5,
         PCII0, PCII1, PCII2, PCII3, PCII4,
@@ -291,7 +299,7 @@ enum {
         INTICI4, INTICI5, INTICI6, INTICI7,
 
         /* interrupt groups */
-        PCII56789, SCIF0, SCIF1, SCIF2, SCIF3,
+        IRL, PCII56789, SCIF0, SCIF1, SCIF2, SCIF3,
         DMAC0, DMAC1,
 };
 
@@ -309,8 +317,6 @@ static struct intc_vect vectors[] __initdata = {
         INTC_VECT(SCIF0_BRI, 0x740), INTC_VECT(SCIF0_TXI, 0x760),
         INTC_VECT(SCIF1_ERI, 0x780), INTC_VECT(SCIF1_RXI, 0x7a0),
         INTC_VECT(SCIF1_BRI, 0x7c0), INTC_VECT(SCIF1_TXI, 0x7e0),
-        INTC_VECT(SCIF2_ERI, 0x800), INTC_VECT(SCIF2_RXI, 0x820),
-        INTC_VECT(SCIF2_BRI, 0x840), INTC_VECT(SCIF2_TXI, 0x860),
         INTC_VECT(SCIF3_ERI, 0x880), INTC_VECT(SCIF3_RXI, 0x8a0),
         INTC_VECT(SCIF3_BRI, 0x8c0), INTC_VECT(SCIF3_TXI, 0x8e0),
         INTC_VECT(DMAC0_DMINT0, 0x900), INTC_VECT(DMAC0_DMINT1, 0x920),
@@ -344,10 +350,13 @@ static struct intc_vect vectors[] __initdata = {
 };
 
 static struct intc_group groups[] __initdata = {
+        INTC_GROUP(IRL, IRL_LLLL, IRL_LLLH, IRL_LLHL, IRL_LLHH,
+                   IRL_LHLL, IRL_LHLH, IRL_LHHL, IRL_LHHH,
+                   IRL_HLLL, IRL_HLLH, IRL_HLHL, IRL_HLHH,
+                   IRL_HHLL, IRL_HHLH, IRL_HHHL),
         INTC_GROUP(PCII56789, PCII5, PCII6, PCII7, PCII8, PCII9),
         INTC_GROUP(SCIF0, SCIF0_ERI, SCIF0_RXI, SCIF0_BRI, SCIF0_TXI),
         INTC_GROUP(SCIF1, SCIF1_ERI, SCIF1_RXI, SCIF1_BRI, SCIF1_TXI),
-        INTC_GROUP(SCIF2, SCIF2_ERI, SCIF2_RXI, SCIF2_BRI, SCIF2_TXI),
         INTC_GROUP(SCIF3, SCIF3_ERI, SCIF3_RXI, SCIF3_BRI, SCIF3_TXI),
         INTC_GROUP(DMAC0, DMAC0_DMINT0, DMAC0_DMINT1, DMAC0_DMINT2,
                    DMAC0_DMINT3, DMAC0_DMINT4, DMAC0_DMINT5, DMAC0_DMAE),
@@ -419,14 +428,14 @@ static DECLARE_INTC_DESC(intc_desc_irq, "shx3-irq", vectors_irq, groups,
 
 /* External interrupt pins in IRL mode */
 static struct intc_vect vectors_irl[] __initdata = {
-        INTC_VECT(IRL, 0x200), INTC_VECT(IRL, 0x220),
-        INTC_VECT(IRL, 0x240), INTC_VECT(IRL, 0x260),
-        INTC_VECT(IRL, 0x280), INTC_VECT(IRL, 0x2a0),
-        INTC_VECT(IRL, 0x2c0), INTC_VECT(IRL, 0x2e0),
-        INTC_VECT(IRL, 0x300), INTC_VECT(IRL, 0x320),
-        INTC_VECT(IRL, 0x340), INTC_VECT(IRL, 0x360),
-        INTC_VECT(IRL, 0x380), INTC_VECT(IRL, 0x3a0),
-        INTC_VECT(IRL, 0x3c0),
+        INTC_VECT(IRL_LLLL, 0x200), INTC_VECT(IRL_LLLH, 0x220),
+        INTC_VECT(IRL_LLHL, 0x240), INTC_VECT(IRL_LLHH, 0x260),
+        INTC_VECT(IRL_LHLL, 0x280), INTC_VECT(IRL_LHLH, 0x2a0),
+        INTC_VECT(IRL_LHHL, 0x2c0), INTC_VECT(IRL_LHHH, 0x2e0),
+        INTC_VECT(IRL_HLLL, 0x300), INTC_VECT(IRL_HLLH, 0x320),
+        INTC_VECT(IRL_HLHL, 0x340), INTC_VECT(IRL_HLHH, 0x360),
+        INTC_VECT(IRL_HHLL, 0x380), INTC_VECT(IRL_HHLH, 0x3a0),
+        INTC_VECT(IRL_HHHL, 0x3c0),
 };
 
 static DECLARE_INTC_DESC(intc_desc_irl, "shx3-irl", vectors_irl, groups,