omap24xx: Fix cbus nested IRQ acking

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29237 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/omap24xx/patches-3.1/252-cbus-retu-tahvo-ack-fix.patch b/target/linux/omap24xx/patches-3.1/252-cbus-retu-tahvo-ack-fix.patch
index 34f9465..6793a3c 100644 (file)
--- a/target/linux/omap24xx/patches-3.1/252-cbus-retu-tahvo-ack-fix.patch
+++ b/target/linux/omap24xx/patches-3.1/252-cbus-retu-tahvo-ack-fix.patch
@@ -1,41 +1,84 @@
 Index: linux-3.1.1/drivers/cbus/retu.c
 ===================================================================
---- linux-3.1.1.orig/drivers/cbus/retu.c       2011-11-17 18:47:59.453004678 +0100
-+++ linux-3.1.1/drivers/cbus/retu.c    2011-11-17 18:49:03.180787673 +0100
-@@ -54,8 +54,6 @@ struct retu {
+--- linux-3.1.1.orig/drivers/cbus/retu.c       2011-11-17 23:23:53.542699149 +0100
++++ linux-3.1.1/drivers/cbus/retu.c    2011-11-17 23:23:55.830689859 +0100
+@@ -53,9 +53,6 @@ struct retu {
+ 
        int                     irq;
  
-       int                     ack;
+-      int                     ack;
 -      bool                    ack_pending;
 -
        int                     mask;
        bool                    mask_pending;
  
-@@ -238,7 +236,6 @@ static void retu_irq_ack(struct irq_data
-       int                     irq = data->irq;
+@@ -191,9 +188,10 @@ static irqreturn_t retu_irq_handler(int
+       mutex_lock(&retu->mutex);
+       idr = __retu_read_reg(retu, RETU_REG_IDR);
+       imr = __retu_read_reg(retu, RETU_REG_IMR);
++      idr &= ~imr;
++      __retu_write_reg(retu, RETU_REG_IDR, idr);
+       mutex_unlock(&retu->mutex);
+ 
+-      idr &= ~imr;
+       if (!idr) {
+               dev_vdbg(retu->dev, "No IRQ, spurious?\n");
+               return IRQ_NONE;
+@@ -232,15 +230,6 @@ static void retu_irq_unmask(struct irq_d
  
-       retu->ack |= (1 << (irq - retu->irq_base));
--      retu->ack_pending = true;
  }
  
+-static void retu_irq_ack(struct irq_data *data)
+-{
+-      struct retu             *retu = irq_data_get_irq_chip_data(data);
+-      int                     irq = data->irq;
+-
+-      retu->ack |= (1 << (irq - retu->irq_base));
+-      retu->ack_pending = true;
+-}
+-
  static void retu_bus_lock(struct irq_data *data)
-@@ -257,9 +254,9 @@ static void retu_bus_sync_unlock(struct
+ {
+       struct retu             *retu = irq_data_get_irq_chip_data(data);
+@@ -257,11 +246,6 @@ static void retu_bus_sync_unlock(struct
                retu->mask_pending = false;
        }
  
 -      if (retu->ack_pending) {
-+      if (retu->ack) {
-               __retu_write_reg(retu, RETU_REG_IDR, retu->ack);
+-              __retu_write_reg(retu, RETU_REG_IDR, retu->ack);
 -              retu->ack_pending = false;
-+              retu->ack = 0;
-       }
- 
+-      }
+-
        mutex_unlock(&retu->mutex);
+ }
+ 
+@@ -271,7 +255,6 @@ static struct irq_chip retu_irq_chip = {
+       .irq_bus_sync_unlock    = retu_bus_sync_unlock,
+       .irq_mask               = retu_irq_mask,
+       .irq_unmask             = retu_irq_unmask,
+-      .irq_ack                = retu_irq_ack,
+ };
+ 
+ static inline void retu_irq_setup(int irq)
+@@ -291,8 +274,7 @@ static void retu_irq_init(struct retu *r
+ 
+       for (irq = base; irq < end; irq++) {
+               irq_set_chip_data(irq, retu);
+-              irq_set_chip_and_handler(irq, &retu_irq_chip,
+-                              handle_simple_irq);
++              irq_set_chip(irq, &retu_irq_chip);
+               irq_set_nested_thread(irq, 1);
+               retu_irq_setup(irq);
+       }
 Index: linux-3.1.1/drivers/cbus/tahvo.c
 ===================================================================
---- linux-3.1.1.orig/drivers/cbus/tahvo.c      2011-11-17 18:47:59.437004733 +0100
-+++ linux-3.1.1/drivers/cbus/tahvo.c   2011-11-17 18:51:03.708374259 +0100
-@@ -52,7 +52,6 @@ struct tahvo {
+--- linux-3.1.1.orig/drivers/cbus/tahvo.c      2011-11-17 23:23:54.358695836 +0100
++++ linux-3.1.1/drivers/cbus/tahvo.c   2011-11-17 23:23:55.830689859 +0100
+@@ -48,11 +48,9 @@ struct tahvo {
+       int             irq_end;
+       int             irq;
+ 
+-      int             ack;
        int             mask;
  
        unsigned int    mask_pending:1;
@@ -43,23 +86,61 @@ Index: linux-3.1.1/drivers/cbus/tahvo.c
        unsigned int    is_betty:1;
  };
  
-@@ -177,9 +176,9 @@ static void tahvo_irq_bus_sync_unlock(st
+@@ -138,9 +136,12 @@ static irqreturn_t tahvo_irq_handler(int
+       u16                     id;
+       u16                     im;
+ 
++      mutex_lock(&tahvo->mutex);
+       id = __tahvo_read_reg(tahvo, TAHVO_REG_IDR);
+       im = __tahvo_read_reg(tahvo, TAHVO_REG_IMR);
+       id &= ~im;
++      __tahvo_write_reg(tahvo, TAHVO_REG_IDR, id);
++      mutex_unlock(&tahvo->mutex);
+ 
+       if (!id) {
+               dev_vdbg(tahvo->dev, "No IRQ, spurious ?\n");
+@@ -177,11 +178,6 @@ static void tahvo_irq_bus_sync_unlock(st
                tahvo->mask_pending = false;
        }
  
 -      if (tahvo->ack_pending) {
-+      if (tahvo->ack) {
-               __tahvo_write_reg(tahvo, TAHVO_REG_IDR, tahvo->ack);
+-              __tahvo_write_reg(tahvo, TAHVO_REG_IDR, tahvo->ack);
 -              tahvo->ack_pending = false;
-+              tahvo->ack = 0;
-       }
- 
+-      }
+-
        mutex_unlock(&tahvo->mutex);
-@@ -209,7 +208,6 @@ static void tahvo_irq_ack(struct irq_dat
-       int                     irq = data->irq;
+ }
  
-       tahvo->ack |= (1 << (irq - tahvo->irq_base));
--      tahvo->ack_pending = true;
+@@ -203,22 +199,12 @@ static void tahvo_irq_unmask(struct irq_
+       tahvo->mask_pending = true;
  }
  
+-static void tahvo_irq_ack(struct irq_data *data)
+-{
+-      struct tahvo            *tahvo = irq_data_get_irq_chip_data(data);
+-      int                     irq = data->irq;
+-
+-      tahvo->ack |= (1 << (irq - tahvo->irq_base));
+-      tahvo->ack_pending = true;
+-}
+-
  static struct irq_chip tahvo_irq_chip = {
+       .name                   = "tahvo",
+       .irq_bus_lock           = tahvo_irq_bus_lock,
+       .irq_bus_sync_unlock    = tahvo_irq_bus_sync_unlock,
+       .irq_mask               = tahvo_irq_mask,
+       .irq_unmask             = tahvo_irq_unmask,
+-      .irq_ack                = tahvo_irq_ack,
+ };
+ 
+ static inline void tahvo_irq_setup(int irq)
+@@ -238,8 +224,7 @@ static void tahvo_irq_init(struct tahvo
+ 
+       for (irq = base; irq < end; irq++) {
+               irq_set_chip_data(irq, tahvo);
+-              irq_set_chip_and_handler(irq, &tahvo_irq_chip,
+-                              handle_simple_irq);
++              irq_set_chip(irq, &tahvo_irq_chip);
+               irq_set_nested_thread(irq, 1);
+               tahvo_irq_setup(irq);
+       }

diff --git a/target/linux/omap24xx/patches-3.1/253-cbus-tahvo-irq-reg-lock.patch b/target/linux/omap24xx/patches-3.1/253-cbus-tahvo-irq-reg-lock.patch
deleted file mode 100644 (file)
index c27a67c..0000000
--- a/target/linux/omap24xx/patches-3.1/253-cbus-tahvo-irq-reg-lock.patch
+++ /dev/null
@@ -1,15 +0,0 @@
-Index: linux-3.1.1/drivers/cbus/tahvo.c
-===================================================================
---- linux-3.1.1.orig/drivers/cbus/tahvo.c      2011-11-17 18:51:03.708374259 +0100
-+++ linux-3.1.1/drivers/cbus/tahvo.c   2011-11-17 18:57:17.739067493 +0100
-@@ -137,8 +137,10 @@ static irqreturn_t tahvo_irq_handler(int
-       u16                     id;
-       u16                     im;
- 
-+      mutex_lock(&tahvo->mutex);
-       id = __tahvo_read_reg(tahvo, TAHVO_REG_IDR);
-       im = __tahvo_read_reg(tahvo, TAHVO_REG_IMR);
-+      mutex_unlock(&tahvo->mutex);
-       id &= ~im;
- 
-       if (!id) {

diff --git a/target/linux/omap24xx/patches-3.1/254-cbus-retu-tahvo-irq-mask-init-fix.patch b/target/linux/omap24xx/patches-3.1/254-cbus-retu-tahvo-irq-mask-init-fix.patch
index 740b275..a3802cb 100644 (file)
--- a/target/linux/omap24xx/patches-3.1/254-cbus-retu-tahvo-irq-mask-init-fix.patch
+++ b/target/linux/omap24xx/patches-3.1/254-cbus-retu-tahvo-irq-mask-init-fix.patch
@@ -1,8 +1,8 @@
 Index: linux-3.1.1/drivers/cbus/retu.c
 ===================================================================
---- linux-3.1.1.orig/drivers/cbus/retu.c       2011-11-17 21:19:01.758502241 +0100
-+++ linux-3.1.1/drivers/cbus/retu.c    2011-11-17 21:53:32.261883947 +0100
-@@ -466,7 +466,8 @@ static int __devinit retu_probe(struct p
+--- linux-3.1.1.orig/drivers/cbus/retu.c       2011-11-17 23:09:26.498214061 +0100
++++ linux-3.1.1/drivers/cbus/retu.c    2011-11-17 23:15:50.280659655 +0100
+@@ -451,7 +451,8 @@ static int __devinit retu_probe(struct p
                        (rev >> 4) & 0x07, rev & 0x0f);
  
        /* Mask all RETU interrupts */
@@ -14,9 +14,9 @@ Index: linux-3.1.1/drivers/cbus/retu.c
                        IRQF_ONESHOT, "retu", retu);
 Index: linux-3.1.1/drivers/cbus/tahvo.c
 ===================================================================
---- linux-3.1.1.orig/drivers/cbus/tahvo.c      2011-11-17 21:19:01.766502210 +0100
-+++ linux-3.1.1/drivers/cbus/tahvo.c   2011-11-17 21:53:52.213800321 +0100
-@@ -361,7 +361,8 @@ static int __devinit tahvo_probe(struct
+--- linux-3.1.1.orig/drivers/cbus/tahvo.c      2011-11-17 23:15:46.684674232 +0100
++++ linux-3.1.1/drivers/cbus/tahvo.c   2011-11-17 23:15:50.280659655 +0100
+@@ -346,7 +346,8 @@ static int __devinit tahvo_probe(struct
                        (rev >> 4) & 0x0f, rev & 0x0f);
  
        /* Mask all TAHVO interrupts */