Re: [PATCH 1/3] i2c/mpc: drop NO_IRQ

[Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>]

On Thu, Oct 22, 2009 at 2:11 PM, Wolfram Sang <w.sang-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org> wrote:
> Drop NO_IRQ as 0 is the preferred way to describe 'no irq'
> (http://lkml.org/lkml/2005/11/21/221). This change is safe, as the driver is
> only used on powerpc, where NO_IRQ is 0 anyhow.
>
> Signed-off-by: Wolfram Sang <w.sang-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
> Cc: Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
> Cc: Ben Dooks <ben-linux-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org>

Acked-by: Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>

> ---
>  drivers/i2c/busses/i2c-mpc.c |    6 +++---
>  1 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
> index d325e86..7e58443 100644
> --- a/drivers/i2c/busses/i2c-mpc.c
> +++ b/drivers/i2c/busses/i2c-mpc.c
> @@ -115,7 +115,7 @@ static int i2c_wait(struct mpc_i2c *i2c, unsigned timeout, int writing)
>        u32 x;
>        int result = 0;
>
> -       if (i2c->irq == NO_IRQ) {
> +       if (!i2c->irq) {
>                while (!(readb(i2c->base + MPC_I2C_SR) & CSR_MIF)) {
>                        schedule();
>                        if (time_after(jiffies, orig_jiffies + timeout)) {
> @@ -520,7 +520,7 @@ static int __devinit fsl_i2c_probe(struct of_device *op,
>        }
>
>        i2c->irq = irq_of_parse_and_map(op->node, 0);
> -       if (i2c->irq != NO_IRQ) { /* i2c->irq = NO_IRQ implies polling */
> +       if (i2c->irq) { /* no i2c->irq implies polling */
>                result = request_irq(i2c->irq, mpc_i2c_isr,
>                                     IRQF_SHARED, "i2c-mpc", i2c);
>                if (result < 0) {
> @@ -579,7 +579,7 @@ static int __devexit fsl_i2c_remove(struct of_device *op)
>        i2c_del_adapter(&i2c->adap);
>        dev_set_drvdata(&op->dev, NULL);
>
> -       if (i2c->irq != NO_IRQ)
> +       if (i2c->irq)
>                free_irq(i2c->irq, i2c);
>
>        irq_dispose_mapping(i2c->irq);
> --
> 1.6.5
>
>



-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.