[linux-yocto] [PATCH 10/17] i2c: designware: Disable interrupts before requesting PCI device interrupt

[weifeng.voon at intel.com]

From: Jarkko Nikula <jarkko.nikula at linux.intel.com>

Device must not generate interrupts before registering the interrupt
handler so move i2c_dw_disable_int() before requesting it.

There are no known issues with this. The code has been here since commit
fe20ff5c7e9c ("i2c-designware: Add support for Designware core behind PCI
devices.").

Signed-off-by: Jarkko Nikula <jarkko.nikula at linux.intel.com>
Signed-off-by: Wolfram Sang <wsa at the-dreams.de>
(cherry picked from commit b9f84adcb834ec2b1fd0ec91676c4b165daf51e6)
Signed-off-by: Voon, Weifeng <weifeng.voon at intel.com>
---
 drivers/i2c/busses/i2c-designware-pcidrv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c
index 61ff9592..e41d250 100644
--- a/drivers/i2c/busses/i2c-designware-pcidrv.c
+++ b/drivers/i2c/busses/i2c-designware-pcidrv.c
@@ -260,6 +260,7 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
 
 	snprintf(adap->name, sizeof(adap->name), "i2c-designware-pci");
 
+	i2c_dw_disable_int(dev);
 	r = devm_request_irq(&pdev->dev, pdev->irq, i2c_dw_isr,
 			IRQF_SHARED | IRQF_COND_SUSPEND, adap->name, dev);
 	if (r) {
@@ -267,7 +268,6 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
 		return r;
 	}
 
-	i2c_dw_disable_int(dev);
 	r = i2c_add_numbered_adapter(adap);
 	if (r) {
 		dev_err(&pdev->dev, "failure adding adapter\n");
-- 
1.9.1