Hello Grygorii,
On Wed, Nov 26, 2014 at 03:59:49PM +0200, Grygorii Strashko wrote:
> Switch Davinci I2C driver to use platform_get_irq(), because
> it is not recommened to use platform_get_resource(pdev, IORESOURCE_IRQ, ..)
> for requesting IRQ resources any more, as they can be not ready yet
> in case of DT-boot.
>
> CC: Sekhar Nori <nsekhar@xxxxxx>
> CC: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
> CC: Santosh Shilimkar <ssantosh@xxxxxxxxxx>
> CC: Murali Karicheri <m-karicheri2@xxxxxx>
> Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx>
> ---
> drivers/i2c/busses/i2c-davinci.c | 20 ++++++++++++--------
> 1 file changed, 12 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
> index 4d96147..7f54903 100644
> --- a/drivers/i2c/busses/i2c-davinci.c
> +++ b/drivers/i2c/busses/i2c-davinci.c
> @@ -640,13 +640,17 @@ static int davinci_i2c_probe(struct platform_device *pdev)
> {
> struct davinci_i2c_dev *dev;
> struct i2c_adapter *adap;
> - struct resource *mem, *irq;
> - int r;
> -
> - irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
> - if (!irq) {
> - dev_err(&pdev->dev, "no irq resource?\n");
> - return -ENODEV;
> + struct resource *mem;
> + int r, irq;
> +
> + irq = platform_get_irq(pdev, 0);
> + if (irq <= 0) {
> + if (irq == -EPROBE_DEFER)
> + return irq;
> + if (!irq)
> + irq = -ENXIO;
> + dev_err(&pdev->dev, "can't get irq resource ret=%d\n", irq);
> + return irq;
The simpler and I think also more usual logic is:
if (!irq)
irq = -ENXIO;
if (irq != -EPROBE_DEFER)
dev_err(...);
return irq;
Other than that the patch looks fine.
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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