From: Anson Huang anson.huang@nxp.com
commit bf2a7ca39fd3ab47ef71c621a7ee69d1813b1f97 upstream.
SNVS IRQ is requested before necessary driver data initialized, if there is a pending IRQ during driver probe phase, kernel NULL pointer panic will occur in IRQ handler. To avoid such scenario, just initialize necessary driver data before enabling IRQ. This patch is inspired by NXP's internal kernel tree.
Fixes: d3dc6e232215 ("input: keyboard: imx: add snvs power key driver") Signed-off-by: Anson Huang Anson.Huang@nxp.com Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/input/keyboard/snvs_pwrkey.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/input/keyboard/snvs_pwrkey.c +++ b/drivers/input/keyboard/snvs_pwrkey.c @@ -156,6 +156,9 @@ static int imx_snvs_pwrkey_probe(struct return error; }
+ pdata->input = input; + platform_set_drvdata(pdev, pdata); + error = devm_request_irq(&pdev->dev, pdata->irq, imx_snvs_pwrkey_interrupt, 0, pdev->name, pdev); @@ -171,9 +174,6 @@ static int imx_snvs_pwrkey_probe(struct return error; }
- pdata->input = input; - platform_set_drvdata(pdev, pdata); - device_init_wakeup(&pdev->dev, pdata->wakeup);
return 0;