From: Sebastian Siewior <bigeasy@xxxxxxxxxxxxx>
Currently the UCB1400 driver discovers the interrupt via probing. This works
probably only on x86. This patch adds a private field to the ac97 struct
where the ac97 driver can deposit informations for the device driver that
serves a device which is attached to the ac97 bus.
This patch also converts the UCB1400 driver to use this information if available.
Signed-off-by: Sebastian Siewior <bigeasy@xxxxxxxxxxxxx>
---
drivers/input/touchscreen/ucb1400_ts.c | 12 ++++++++----
include/sound/ac97_codec.h | 4 ++++
2 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/input/touchscreen/ucb1400_ts.c b/drivers/input/touchscreen/ucb1400_ts.c
index 5ee175e..531fb4b 100644
--- a/drivers/input/touchscreen/ucb1400_ts.c
+++ b/drivers/input/touchscreen/ucb1400_ts.c
@@ -494,10 +494,14 @@ static int ucb1400_ts_probe(struct device *dev)
goto err_free_devs;
}
- error = ucb1400_detect_irq(ucb);
- if (error) {
- printk(KERN_ERR "UCB1400: IRQ probe failed\n");
- goto err_free_devs;
+ if (!ucb->ac97->device_private_data) {
+ error = ucb1400_detect_irq(ucb);
+ if (error) {
+ printk(KERN_ERR "UCB1400: IRQ probe failed\n");
+ goto err_free_devs;
+ }
+ } else {
+ ucb->irq = (int) ucb->ac97->device_private_data;
}
error = request_irq(ucb->irq, ucb1400_hard_irq, IRQF_TRIGGER_RISING,
diff --git a/include/sound/ac97_codec.h b/include/sound/ac97_codec.h
index 0148058..b1af896 100644
--- a/include/sound/ac97_codec.h
+++ b/include/sound/ac97_codec.h
@@ -474,6 +474,10 @@ struct snd_ac97 {
struct snd_ac97_build_ops * build_ops;
void *private_data;
void (*private_free) (struct snd_ac97 *ac97);
+ /* This field is used by device drivers which serve devices which are
+ * attached to the AC97 bus.
+ */
+ void *device_private_data;
/* --- */
struct snd_ac97_bus *bus;
struct pci_dev *pci; /* assigned PCI device - used for quirks */
--
1.5.4.3
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