linux-kernel - Re: [PATCH -mm] Blackfin: blackfin i2c driver

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Message-ID: <8bd0f97a0703061504h78890fcexc10e97c026c41924@mail.gmail.com>
Date:	Tue, 6 Mar 2007 18:04:56 -0500
From:	"Mike Frysinger" <vapier.adi@...il.com>
To:	"Alexey Dobriyan" <adobriyan@...il.com>
Cc:	"Wu, Bryan" <bryan.wu@...log.com>, khali@...ux-fr.org,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, mhfan@...c.edu
Subject: Re: [PATCH -mm] Blackfin: blackfin i2c driver

On 3/6/07, Alexey Dobriyan <adobriyan@...il.com> wrote:
> > +static int __init i2c_bfin_twi_init(void)
> > +{
> > +     rc = request_irq(twi_iface.irq, bfin_twi_interrupt_entry, SA_INTERRUPT, "i2c-bfin-twi", &twi_iface);
> > +     if (rc) {
> > +             printk(KERN_ERR "i2c-bfin-twi: can't get IRQ %d !\n", twi_iface.irq);
> > +             return -ENODEV;
> > +     }
> > +
> > +     /* Set TWI internal clock as 10MHz */
> > +     bfin_write_TWI_CONTROL(((get_sclk() / 1024 / 1024 + 5) / 10) & 0x7F);
> > +
> > +     /* Set Twi interface clock as specified */
> > +     if (CONFIG_TWICLK_KHZ > 400)
> > +             bfin_write_TWI_CLKDIV((( 5*1024 / 400 ) << 8) | (( 5*1024 / 400 ) & 0xFF));
> > +     else
> > +             bfin_write_TWI_CLKDIV((( 5*1024 / CONFIG_TWICLK_KHZ ) << 8) | (( 5*1024 / CONFIG_TWICLK_KHZ ) & 0xFF));
> > +
> > +     /* Enable TWI */
> > +     bfin_write_TWI_CONTROL(bfin_read_TWI_CONTROL() | TWI_ENA);
> > +     SSYNC();
> > +
> > +     return i2c_add_adapter(p_adap);
>
> free_irq on error?

what error ?  do you mean i2c_add_adapter() ?
-mike
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