powerpc/mpic: Search for open-pic device-tree node if NULL

Almost all PowerPC platforms use a standard "open-pic" device node so
the mpic_alloc() function now accepts NULL for the device-node.  This
will cause it to perform a default search with of_find_matching_node().

Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/platforms/85xx/corenet_ds.c b/arch/powerpc/platforms/85xx/corenet_ds.c
index 5b1c577..cfa4bad 100644 (file)
--- a/arch/powerpc/platforms/85xx/corenet_ds.c
+++ b/arch/powerpc/platforms/85xx/corenet_ds.c
@@ -36,21 +36,13 @@
 void __init corenet_ds_pic_init(void)
 {
        struct mpic *mpic;
-       struct device_node *np = NULL;
        unsigned int flags = MPIC_PRIMARY | MPIC_BIG_ENDIAN |
                                MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU;
 
-       np = of_find_node_by_type(np, "open-pic");
-
-       if (np == NULL) {
-               printk(KERN_ERR "Could not find open-pic node\n");
-               return;
-       }
-
        if (ppc_md.get_irq == mpic_get_coreint_irq)
                flags |= MPIC_ENABLE_COREINT;
 
-       mpic = mpic_alloc(np, 0, flags, 0, 256, " OpenPIC  ");
+       mpic = mpic_alloc(NULL, 0, flags, 0, 256, " OpenPIC  ");
        BUG_ON(mpic == NULL);
 
        mpic_init(mpic);

diff --git a/arch/powerpc/platforms/85xx/ksi8560.c b/arch/powerpc/platforms/85xx/ksi8560.c
index 3403b0e..1620fa8 100644 (file)
--- a/arch/powerpc/platforms/85xx/ksi8560.c
+++ b/arch/powerpc/platforms/85xx/ksi8560.c
@@ -57,22 +57,10 @@ static void machine_restart(char *cmd)
 
 static void __init ksi8560_pic_init(void)
 {
-       struct mpic *mpic;
-       struct device_node *np;
-
-       np = of_find_node_by_type(NULL, "open-pic");
-
-       if (np == NULL) {
-               printk(KERN_ERR "Could not find open-pic node\n");
-               return;
-       }
-
-       mpic = mpic_alloc(np, 0,
+       struct mpic *mpic = mpic_alloc(NULL, 0,
                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
                        0, 256, " OpenPIC  ");
        BUG_ON(mpic == NULL);
-       of_node_put(np);
-
        mpic_init(mpic);
 
        mpc85xx_cpm2_pic_init();

diff --git a/arch/powerpc/platforms/85xx/mpc8536_ds.c b/arch/powerpc/platforms/85xx/mpc8536_ds.c
index 5c20b28..07916d6 100644 (file)
--- a/arch/powerpc/platforms/85xx/mpc8536_ds.c
+++ b/arch/powerpc/platforms/85xx/mpc8536_ds.c
@@ -36,22 +36,11 @@
 
 void __init mpc8536_ds_pic_init(void)
 {
-       struct mpic *mpic;
-       struct device_node *np;
-
-       np = of_find_node_by_type(NULL, "open-pic");
-       if (np == NULL) {
-               printk(KERN_ERR "Could not find open-pic node\n");
-               return;
-       }
-
-       mpic = mpic_alloc(np, 0,
+       struct mpic *mpic = mpic_alloc(NULL, 0,
                          MPIC_PRIMARY | MPIC_WANTS_RESET |
                          MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS,
                        0, 256, " OpenPIC  ");
        BUG_ON(mpic == NULL);
-       of_node_put(np);
-
        mpic_init(mpic);
 }
 

diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ads.c b/arch/powerpc/platforms/85xx/mpc85xx_ads.c
index 4c1e9b6..17c6f06 100644 (file)
--- a/arch/powerpc/platforms/85xx/mpc85xx_ads.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_ads.c
@@ -50,21 +50,10 @@ static int mpc85xx_exclude_device(struct pci_controller *hose,
 
 static void __init mpc85xx_ads_pic_init(void)
 {
-       struct mpic *mpic;
-       struct device_node *np = NULL;
-
-       np = of_find_node_by_type(np, "open-pic");
-       if (!np) {
-               printk(KERN_ERR "Could not find open-pic node\n");
-               return;
-       }
-
-       mpic = mpic_alloc(np, 0,
+       struct mpic *mpic = mpic_alloc(NULL, 0,
                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
                        0, 256, " OpenPIC  ");
        BUG_ON(mpic == NULL);
-       of_node_put(np);
-
        mpic_init(mpic);
 
        mpc85xx_cpm2_pic_init();

diff --git a/arch/powerpc/platforms/85xx/mpc85xx_cds.c b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
index 62b90c3..cf209b3 100644 (file)
--- a/arch/powerpc/platforms/85xx/mpc85xx_cds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_cds.c
@@ -188,23 +188,10 @@ static struct irqaction mpc85xxcds_8259_irqaction = {
 static void __init mpc85xx_cds_pic_init(void)
 {
        struct mpic *mpic;
-       struct device_node *np = NULL;
-
-       np = of_find_node_by_type(np, "open-pic");
-
-       if (np == NULL) {
-               printk(KERN_ERR "Could not find open-pic node\n");
-               return;
-       }
-
-       mpic = mpic_alloc(np, 0,
+       mpic = mpic_alloc(NULL, 0,
                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
                        0, 256, " OpenPIC  ");
        BUG_ON(mpic == NULL);
-
-       /* Return the mpic node */
-       of_node_put(np);
-
        mpic_init(mpic);
 }
 

diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ds.c b/arch/powerpc/platforms/85xx/mpc85xx_ds.c
index 4fc6b80..104a09b 100644 (file)
--- a/arch/powerpc/platforms/85xx/mpc85xx_ds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_ds.c
@@ -63,27 +63,21 @@ static void mpc85xx_8259_cascade(unsigned int irq, struct irq_desc *desc)
 void __init mpc85xx_ds_pic_init(void)
 {
        struct mpic *mpic;
-       struct device_node *np;
 #ifdef CONFIG_PPC_I8259
+       struct device_node *np;
        struct device_node *cascade_node = NULL;
        int cascade_irq;
 #endif
        unsigned long root = of_get_flat_dt_root();
 
-       np = of_find_node_by_type(NULL, "open-pic");
-       if (np == NULL) {
-               printk(KERN_ERR "Could not find open-pic node\n");
-               return;
-       }
-
        if (of_flat_dt_is_compatible(root, "fsl,MPC8572DS-CAMP")) {
-               mpic = mpic_alloc(np, 0,
+               mpic = mpic_alloc(NULL, 0,
                        MPIC_PRIMARY |
                        MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS |
                        MPIC_SINGLE_DEST_CPU,
                        0, 256, " OpenPIC  ");
        } else {
-               mpic = mpic_alloc(np, 0,
+               mpic = mpic_alloc(NULL, 0,
                          MPIC_PRIMARY | MPIC_WANTS_RESET |
                          MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS |
                          MPIC_SINGLE_DEST_CPU,
@@ -91,8 +85,6 @@ void __init mpc85xx_ds_pic_init(void)
        }
 
        BUG_ON(mpic == NULL);
-       of_node_put(np);
-
        mpic_init(mpic);
 
 #ifdef CONFIG_PPC_I8259

diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
index 74b6da2..4e5431a 100644 (file)
--- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
@@ -434,19 +434,11 @@ machine_arch_initcall(p1021_mds, swiotlb_setup_bus_notifier);
 
 static void __init mpc85xx_mds_pic_init(void)
 {
-       struct mpic *mpic;
-       struct device_node *np = NULL;
-
-       np = of_find_node_by_type(NULL, "open-pic");
-       if (!np)
-               return;
-
-       mpic = mpic_alloc(np, 0,
+       struct mpic *mpic = mpic_alloc(NULL, 0,
                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN |
                        MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU,
                        0, 256, " OpenPIC  ");
        BUG_ON(mpic == NULL);
-       of_node_put(np);
 
        mpic_init(mpic);
        mpc85xx_mds_qeic_init();

diff --git a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
index 2b299eb..a68d922 100644 (file)
--- a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
@@ -45,23 +45,16 @@
 void __init mpc85xx_rdb_pic_init(void)
 {
        struct mpic *mpic;
-       struct device_node *np;
        unsigned long root = of_get_flat_dt_root();
 
-       np = of_find_node_by_type(NULL, "open-pic");
-       if (np == NULL) {
-               printk(KERN_ERR "Could not find open-pic node\n");
-               return;
-       }
-
        if (of_flat_dt_is_compatible(root, "fsl,MPC85XXRDB-CAMP")) {
-               mpic = mpic_alloc(np, 0,
+               mpic = mpic_alloc(NULL, 0,
                        MPIC_PRIMARY |
                        MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS |
                        MPIC_SINGLE_DEST_CPU,
                        0, 256, " OpenPIC  ");
        } else {
-               mpic = mpic_alloc(np, 0,
+               mpic = mpic_alloc(NULL, 0,
                  MPIC_PRIMARY | MPIC_WANTS_RESET |
                  MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS |
                  MPIC_SINGLE_DEST_CPU,
@@ -69,10 +62,7 @@ void __init mpc85xx_rdb_pic_init(void)
        }
 
        BUG_ON(mpic == NULL);
-       of_node_put(np);
-
        mpic_init(mpic);
-
 }
 
 /*

diff --git a/arch/powerpc/platforms/85xx/p1010rdb.c b/arch/powerpc/platforms/85xx/p1010rdb.c
index dff49e8..25f7375 100644 (file)
--- a/arch/powerpc/platforms/85xx/p1010rdb.c
+++ b/arch/powerpc/platforms/85xx/p1010rdb.c
@@ -32,16 +32,8 @@
 
 void __init p1010_rdb_pic_init(void)
 {
-       struct mpic *mpic;
-       struct device_node *np;
-
-       np = of_find_node_by_type(NULL, "open-pic");
-       if (np == NULL) {
-               printk(KERN_ERR "Could not find open-pic node\n");
-               return;
-       }
-
-       mpic = mpic_alloc(np, 0, MPIC_PRIMARY | MPIC_WANTS_RESET |
+       struct mpic *mpic = mpic_alloc(NULL, 0,
+         MPIC_PRIMARY | MPIC_WANTS_RESET |
          MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU,
          0, 256, " OpenPIC  ");
 

diff --git a/arch/powerpc/platforms/85xx/p1022_ds.c b/arch/powerpc/platforms/85xx/p1022_ds.c
index 6d684c2..6af5502 100644 (file)
--- a/arch/powerpc/platforms/85xx/p1022_ds.c
+++ b/arch/powerpc/platforms/85xx/p1022_ds.c
@@ -241,24 +241,12 @@ p1022ds_valid_monitor_port(enum fsl_diu_monitor_port port)
 
 void __init p1022_ds_pic_init(void)
 {
-       struct mpic *mpic;
-       struct device_node *np;
-
-       np = of_find_node_by_type(NULL, "open-pic");
-       if (!np) {
-               pr_err("Could not find open-pic node\n");
-               return;
-       }
-
-       mpic = mpic_alloc(np, 0,
+       struct mpic *mpic = mpic_alloc(NULL, 0,
                MPIC_PRIMARY | MPIC_WANTS_RESET |
                MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS |
                MPIC_SINGLE_DEST_CPU,
                0, 256, " OpenPIC  ");
-
        BUG_ON(mpic == NULL);
-       of_node_put(np);
-
        mpic_init(mpic);
 }
 

diff --git a/arch/powerpc/platforms/85xx/p1023_rds.c b/arch/powerpc/platforms/85xx/p1023_rds.c
index df7ccf6..b3c78fe 100644 (file)
--- a/arch/powerpc/platforms/85xx/p1023_rds.c
+++ b/arch/powerpc/platforms/85xx/p1023_rds.c
@@ -93,16 +93,7 @@ machine_device_initcall(p1023_rds, mpc85xx_common_publish_devices);
 
 static void __init mpc85xx_rds_pic_init(void)
 {
-       struct mpic *mpic;
-       struct device_node *np = NULL;
-
-       np = of_find_node_by_type(NULL, "open-pic");
-       if (!np) {
-               printk(KERN_ERR "Could not find open-pic node\n");
-               return;
-       }
-
-       mpic = mpic_alloc(np, 0,
+       struct mpic *mpic = mpic_alloc(NULL, 0,
                MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN |
                MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU,
                0, 256, " OpenPIC  ");

diff --git a/arch/powerpc/platforms/85xx/sbc8548.c b/arch/powerpc/platforms/85xx/sbc8548.c
index 5e16025..38d6945 100644 (file)
--- a/arch/powerpc/platforms/85xx/sbc8548.c
+++ b/arch/powerpc/platforms/85xx/sbc8548.c
@@ -54,24 +54,10 @@ static int sbc_rev;
 
 static void __init sbc8548_pic_init(void)
 {
-       struct mpic *mpic;
-       struct device_node *np = NULL;
-
-       np = of_find_node_by_type(np, "open-pic");
-
-       if (np == NULL) {
-               printk(KERN_ERR "Could not find open-pic node\n");
-               return;
-       }
-
-       mpic = mpic_alloc(np, 0,
+       struct mpic *mpic = mpic_alloc(NULL, 0,
                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
                        0, 256, " OpenPIC  ");
        BUG_ON(mpic == NULL);
-
-       /* Return the mpic node */
-       of_node_put(np);
-
        mpic_init(mpic);
 }
 

diff --git a/arch/powerpc/platforms/85xx/sbc8560.c b/arch/powerpc/platforms/85xx/sbc8560.c
index 97f00de..7e6d7e5 100644 (file)
--- a/arch/powerpc/platforms/85xx/sbc8560.c
+++ b/arch/powerpc/platforms/85xx/sbc8560.c
@@ -41,21 +41,10 @@
 
 static void __init sbc8560_pic_init(void)
 {
-       struct mpic *mpic;
-       struct device_node *np = NULL;
-
-       np = of_find_node_by_type(np, "open-pic");
-       if (!np) {
-               printk(KERN_ERR "Could not find open-pic node\n");
-               return;
-       }
-
-       mpic = mpic_alloc(np, 0,
+       struct mpic *mpic = mpic_alloc(NULL, 0,
                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
                        0, 256, " OpenPIC  ");
        BUG_ON(mpic == NULL);
-       of_node_put(np);
-
        mpic_init(mpic);
 
        mpc85xx_cpm2_pic_init();

diff --git a/arch/powerpc/platforms/85xx/socrates.c b/arch/powerpc/platforms/85xx/socrates.c
index e87e75c..8175f0a 100644 (file)
--- a/arch/powerpc/platforms/85xx/socrates.c
+++ b/arch/powerpc/platforms/85xx/socrates.c
@@ -46,21 +46,12 @@
 
 static void __init socrates_pic_init(void)
 {
-       struct mpic *mpic;
        struct device_node *np;
 
-       np = of_find_node_by_type(NULL, "open-pic");
-       if (!np) {
-               printk(KERN_ERR "Could not find open-pic node\n");
-               return;
-       }
-
-       mpic = mpic_alloc(np, 0,
+       struct mpic *mpic = mpic_alloc(NULL, 0,
                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
                        0, 256, " OpenPIC  ");
        BUG_ON(mpic == NULL);
-       of_node_put(np);
-
        mpic_init(mpic);
 
        np = of_find_compatible_node(NULL, NULL, "abb,socrates-fpga-pic");

diff --git a/arch/powerpc/platforms/85xx/stx_gp3.c b/arch/powerpc/platforms/85xx/stx_gp3.c
index 060d514..8ca1e61 100644 (file)
--- a/arch/powerpc/platforms/85xx/stx_gp3.c
+++ b/arch/powerpc/platforms/85xx/stx_gp3.c
@@ -48,21 +48,10 @@
 
 static void __init stx_gp3_pic_init(void)
 {
-       struct mpic *mpic;
-       struct device_node *np;
-
-       np = of_find_node_by_type(NULL, "open-pic");
-       if (!np) {
-               printk(KERN_ERR "Could not find open-pic node\n");
-               return;
-       }
-
-       mpic = mpic_alloc(np, 0,
+       struct mpic *mpic = mpic_alloc(NULL, 0,
                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
                        0, 256, " OpenPIC  ");
        BUG_ON(mpic == NULL);
-       of_node_put(np);
-
        mpic_init(mpic);
 
        mpc85xx_cpm2_pic_init();

diff --git a/arch/powerpc/platforms/85xx/tqm85xx.c b/arch/powerpc/platforms/85xx/tqm85xx.c
index a46b9fc..6e7a835 100644 (file)
--- a/arch/powerpc/platforms/85xx/tqm85xx.c
+++ b/arch/powerpc/platforms/85xx/tqm85xx.c
@@ -46,21 +46,10 @@
 
 static void __init tqm85xx_pic_init(void)
 {
-       struct mpic *mpic;
-       struct device_node *np;
-
-       np = of_find_node_by_type(NULL, "open-pic");
-       if (!np) {
-               printk(KERN_ERR "Could not find open-pic node\n");
-               return;
-       }
-
-       mpic = mpic_alloc(np, 0,
+       struct mpic *mpic = mpic_alloc(NULL, 0,
                        MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
                        0, 256, " OpenPIC  ");
        BUG_ON(mpic == NULL);
-       of_node_put(np);
-
        mpic_init(mpic);
 
        mpc85xx_cpm2_pic_init();

diff --git a/arch/powerpc/platforms/85xx/xes_mpc85xx.c b/arch/powerpc/platforms/85xx/xes_mpc85xx.c
index 2be5e4d..f94c608 100644 (file)
--- a/arch/powerpc/platforms/85xx/xes_mpc85xx.c
+++ b/arch/powerpc/platforms/85xx/xes_mpc85xx.c
@@ -43,22 +43,11 @@
 
 void __init xes_mpc85xx_pic_init(void)
 {
-       struct mpic *mpic;
-       struct device_node *np;
-
-       np = of_find_node_by_type(NULL, "open-pic");
-       if (np == NULL) {
-               printk(KERN_ERR "Could not find open-pic node\n");
-               return;
-       }
-
-       mpic = mpic_alloc(np, 0,
+       struct mpic *mpic = mpic_alloc(NULL, 0,
                          MPIC_PRIMARY | MPIC_WANTS_RESET |
                          MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS,
                        0, 256, " OpenPIC  ");
        BUG_ON(mpic == NULL);
-       of_node_put(np);
-
        mpic_init(mpic);
 }
 

diff --git a/arch/powerpc/platforms/86xx/pic.c b/arch/powerpc/platforms/86xx/pic.c
index f85c8f0..ed85b3c 100644 (file)
--- a/arch/powerpc/platforms/86xx/pic.c
+++ b/arch/powerpc/platforms/86xx/pic.c
@@ -31,24 +31,17 @@ static void mpc86xx_8259_cascade(unsigned int irq, struct irq_desc *desc)
 
 void __init mpc86xx_init_irq(void)
 {
-       struct mpic *mpic;
-       struct device_node *np;
 #ifdef CONFIG_PPC_I8259
+       struct device_node *np;
        struct device_node *cascade_node = NULL;
        int cascade_irq;
 #endif
 
-       /* Determine PIC address. */
-       np = of_find_node_by_type(NULL, "open-pic");
-       if (np == NULL)
-               return;
-
-       mpic = mpic_alloc(np, 0,
+       struct mpic *mpic = mpic_alloc(NULL, 0,
                        MPIC_PRIMARY | MPIC_WANTS_RESET |
                        MPIC_BIG_ENDIAN | MPIC_BROKEN_FRR_NIRQS |
                        MPIC_SINGLE_DEST_CPU,
                        0, 256, " MPIC     ");
-       of_node_put(np);
        BUG_ON(mpic == NULL);
 
        mpic_init(mpic);

diff --git a/arch/powerpc/platforms/embedded6xx/holly.c b/arch/powerpc/platforms/embedded6xx/holly.c
index d4fb41e..5ed00a7 100644 (file)
--- a/arch/powerpc/platforms/embedded6xx/holly.c
+++ b/arch/powerpc/platforms/embedded6xx/holly.c
@@ -148,20 +148,13 @@ static void __init holly_setup_arch(void)
 static void __init holly_init_IRQ(void)
 {
        struct mpic *mpic;
-       struct device_node *tsi_pic;
 #ifdef CONFIG_PCI
        unsigned int cascade_pci_irq;
        struct device_node *tsi_pci;
        struct device_node *cascade_node = NULL;
 #endif
 
-       tsi_pic = of_find_node_by_type(NULL, "open-pic");
-       if (!tsi_pic) {
-               printk(KERN_ERR "%s: No tsi108 PIC found !\n", __func__);
-               return;
-       }
-
-       mpic = mpic_alloc(tsi_pic, 0,
+       mpic = mpic_alloc(NULL, 0,
                        MPIC_PRIMARY | MPIC_BIG_ENDIAN | MPIC_WANTS_RESET |
                        MPIC_SPV_EOI | MPIC_NO_PTHROU_DIS | MPIC_REGSET_TSI108,
                        24,
@@ -195,7 +188,6 @@ static void __init holly_init_IRQ(void)
 #endif
        /* Configure MPIC outputs to CPU0 */
        tsi108_write_reg(TSI108_MPIC_OFFSET + 0x30c, 0);
-       of_node_put(tsi_pic);
 }
 
 void holly_show_cpuinfo(struct seq_file *m)

diff --git a/arch/powerpc/platforms/embedded6xx/linkstation.c b/arch/powerpc/platforms/embedded6xx/linkstation.c
index 72b3685..502ff60 100644 (file)
--- a/arch/powerpc/platforms/embedded6xx/linkstation.c
+++ b/arch/powerpc/platforms/embedded6xx/linkstation.c
@@ -81,13 +81,9 @@ static void __init linkstation_setup_arch(void)
 static void __init linkstation_init_IRQ(void)
 {
        struct mpic *mpic;
-       struct device_node *dnp;
 
-       dnp = of_find_node_by_type(NULL, "open-pic");
-       if (dnp == NULL)
-               return;
-
-       mpic = mpic_alloc(dnp, 0, MPIC_PRIMARY | MPIC_WANTS_RESET, 4, 32, " EPIC     ");
+       mpic = mpic_alloc(NULL, 0, MPIC_PRIMARY | MPIC_WANTS_RESET,
+                       4, 32, " EPIC     ");
        BUG_ON(mpic == NULL);
 
        /* PCI IRQs */

diff --git a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c b/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
index c8ce204..e0f1127 100644 (file)
--- a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
+++ b/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
@@ -102,20 +102,13 @@ static void __init mpc7448_hpc2_setup_arch(void)
 static void __init mpc7448_hpc2_init_IRQ(void)
 {
        struct mpic *mpic;
-       struct device_node *tsi_pic;
 #ifdef CONFIG_PCI
        unsigned int cascade_pci_irq;
        struct device_node *tsi_pci;
        struct device_node *cascade_node = NULL;
 #endif
 
-       tsi_pic = of_find_node_by_type(NULL, "open-pic");
-       if (!tsi_pic) {
-               printk("%s: No tsi108 PIC found !\n", __func__);
-               return;
-       }
-
-       mpic = mpic_alloc(tsi_pic, 0,
+       mpic = mpic_alloc(NULL, 0,
                        MPIC_PRIMARY | MPIC_BIG_ENDIAN | MPIC_WANTS_RESET |
                        MPIC_SPV_EOI | MPIC_NO_PTHROU_DIS | MPIC_REGSET_TSI108,
                        24,
@@ -149,7 +142,6 @@ static void __init mpc7448_hpc2_init_IRQ(void)
 #endif
        /* Configure MPIC outputs to CPU0 */
        tsi108_write_reg(TSI108_MPIC_OFFSET + 0x30c, 0);
-       of_node_put(tsi_pic);
 }
 
 void mpc7448_hpc2_show_cpuinfo(struct seq_file *m)

diff --git a/arch/powerpc/platforms/embedded6xx/storcenter.c b/arch/powerpc/platforms/embedded6xx/storcenter.c
index 084f0fc..9bd15df 100644 (file)
--- a/arch/powerpc/platforms/embedded6xx/storcenter.c
+++ b/arch/powerpc/platforms/embedded6xx/storcenter.c
@@ -83,17 +83,9 @@ static void __init storcenter_setup_arch(void)
 static void __init storcenter_init_IRQ(void)
 {
        struct mpic *mpic;
-       struct device_node *dnp;
 
-       dnp = of_find_node_by_type(NULL, "open-pic");
-       if (dnp == NULL)
-               return;
-
-       mpic = mpic_alloc(dnp, 0, MPIC_PRIMARY | MPIC_WANTS_RESET,
+       mpic = mpic_alloc(NULL, 0, MPIC_PRIMARY | MPIC_WANTS_RESET,
                        16, 32, " OpenPIC  ");
-
-       of_node_put(dnp);
-
        BUG_ON(mpic == NULL);
 
        /*

diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index ef721c3..bb72a62 100644 (file)
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -1143,8 +1143,24 @@ struct mpic * __init mpic_alloc(struct device_node *node,
        const char *vers;
        const u32 *psrc;
 
-       /* This code assumes that a non-NULL device node is passed in */
-       BUG_ON(!node);
+       /* Default MPIC search parameters */
+       static const struct of_device_id __initconst mpic_device_id[] = {
+               { .type       = "open-pic", },
+               { .compatible = "open-pic", },
+               {},
+       };
+
+       /*
+        * If we were not passed a device-tree node, then perform the default
+        * search for standardized a standardized OpenPIC.
+        */
+       if (node) {
+               node = of_node_get(node);
+       } else {
+               node = of_find_matching_node(NULL, mpic_device_id);
+               if (!node)
+                       return NULL;
+       }
 
        /* Pick the physical address from the device tree if unspecified */
        if (!phys_addr) {
@@ -1154,14 +1170,14 @@ struct mpic * __init mpic_alloc(struct device_node *node,
                } else {
                        struct resource r;
                        if (of_address_to_resource(node, 0, &r))
-                               return NULL;
+                               goto err_of_node_put;
                        phys_addr = r.start;
                }
        }
 
        mpic = kzalloc(sizeof(struct mpic), GFP_KERNEL);
        if (mpic == NULL)
-               return NULL;
+               goto err_of_node_put;
 
        mpic->name = name;
        mpic->paddr = phys_addr;
@@ -1325,6 +1341,11 @@ struct mpic * __init mpic_alloc(struct device_node *node,
                                       isu_size ? isu_size : mpic->num_sources,
                                       &mpic_host_ops,
                                       flags & MPIC_LARGE_VECTORS ? 2048 : 256);
+
+       /*
+        * FIXME: The code leaks the MPIC object and mappings here; this
+        * is very unlikely to fail but it ought to be fixed anyways.
+        */
        if (mpic->irqhost == NULL)
                return NULL;
 
@@ -1359,7 +1380,12 @@ struct mpic * __init mpic_alloc(struct device_node *node,
                irq_set_default_host(mpic->irqhost);
        }
 
+       of_node_put(node);
        return mpic;
+
+err_of_node_put:
+       of_node_put(node);
+       return NULL;
 }
 
 void __init mpic_assign_isu(struct mpic *mpic, unsigned int isu_num,