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Code

omap24xx: Fix cbus nested IRQ acking

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29237 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
mb 2011-11-17 22:31:27 +00:00
parent 8a2f3bb99b
commit 9460bebd64
3 changed files with 115 additions and 49 deletions
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135
target/linux/omap24xx/patches-3.1/252-cbus-retu-tahvo-ack-fix.patch
View File

@ -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);
}
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);
}

15
target/linux/omap24xx/patches-3.1/253-cbus-tahvo-irq-reg-lock.patch
View File

@ -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) {

12
target/linux/omap24xx/patches-3.1/254-cbus-retu-tahvo-irq-mask-init-fix.patch
View File

@ -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 */