Prev: PCI quirk: RS780/RS880: work around missing MSI initialization
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From: Greg KH on 30 Mar 2010 20:30
2.6.31-stable review patch. If anyone has any objections, please let us know.

------------------

commit 22f8b2695eda496026623020811cae34590ee3d7 upstream.

Unexpected signals can disturb the bus-handling and lock it up. Don't use
interruptible in 'wait_event_*' and 'wake_*' as in commits
dc1972d02747d2170fb1d78d114801f5ecb27506 (for cpm),
1ab082d7cbd0f34e39a5396cc6340c00bc5d66ef (for mpc),
b7af349b175af45f9d87b3bf3f0a221e1831ed39 (for omap).

Signed-off-by: Wolfram Sang <w.sang(a)pengutronix.de>
Signed-off-by: Jean Delvare <khali(a)linux-fr.org>
Acked-by: Jean Delvare <jdelvare(a)suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de>
---
Tested with custom hardware.

drivers/i2c/busses/i2c-pca-isa.c | 4 ++--
drivers/i2c/busses/i2c-pca-platform.c | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/i2c/busses/i2c-pca-isa.c
+++ b/drivers/i2c/busses/i2c-pca-isa.c
@@ -75,7 +75,7 @@ static int pca_isa_waitforcompletion(voi
unsigned long timeout;

if (irq > -1) {
- ret = wait_event_interruptible_timeout(pca_wait,
+ ret = wait_event_timeout(pca_wait,
pca_isa_readbyte(pd, I2C_PCA_CON)
& I2C_PCA_CON_SI, pca_isa_ops.timeout);
} else {
@@ -96,7 +96,7 @@ static void pca_isa_resetchip(void *pd)
}

static irqreturn_t pca_handler(int this_irq, void *dev_id) {
- wake_up_interruptible(&pca_wait);
+ wake_up(&pca_wait);
return IRQ_HANDLED;
}

--- a/drivers/i2c/busses/i2c-pca-platform.c
+++ b/drivers/i2c/busses/i2c-pca-platform.c
@@ -84,7 +84,7 @@ static int i2c_pca_pf_waitforcompletion(
unsigned long timeout;

if (i2c->irq) {
- ret = wait_event_interruptible_timeout(i2c->wait,
+ ret = wait_event_timeout(i2c->wait,
i2c->algo_data.read_byte(i2c, I2C_PCA_CON)
& I2C_PCA_CON_SI, i2c->adap.timeout);
} else {
@@ -122,7 +122,7 @@ static irqreturn_t i2c_pca_pf_handler(in
if ((i2c->algo_data.read_byte(i2c, I2C_PCA_CON) & I2C_PCA_CON_SI) == 0)
return IRQ_NONE;

- wake_up_interruptible(&i2c->wait);
+ wake_up(&i2c->wait);

return IRQ_HANDLED;
}


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Prev: PCI quirk: RS780/RS880: work around missing MSI initialization
Next: [55/89] hwmon: (fschmd) Fix a memleak on multiple opens of /dev/watchdog