On 17 August 2015 at 22:18, Ezequiel Garcia
<[email protected]> wrote:
> On 16 Aug 08:10 PM, Joachim Eastwood wrote:
> [..]
>> +
>> +static int 2(struct lpc2k_i2c *i2c)
>> +{
>> + unsigned long timeout = jiffies + msecs_to_jiffies(1000);
>> +
>> + /*1
>> + * If the transfer needs to abort for some reason, we'll try to
>> + * force a stop condition to clear any pending bus conditions
>> + */
>> + writel(LPC24XX_STO, i2c->base + LPC24XX_I2CONSET);
>> +
>> + /* Wait for status change */
>> + while (readl(i2c->base + LPC24XX_I2STAT) != M_I2C_IDLE) {
>> + if (time_after(jiffies, timeout)) {
>> + /* Bus was not idle, try to reset adapter */
>> + i2c_lpc2k_reset(i2c);
>> + return -EBUSY;
>> + }
>> +
>> + cpu_relax();
>> + }
>
> I believe you can use readl_{relaxed}_poll_timeout_{atomic} here.
I did consider it, but since I don't have a good to way test the code
path I left it as it was.
Also since readl_{relaxed}_poll_timeout_{atomic} takes parameters in
us it seemed unsuitable for a 1s total sleep, but I may be wrong.
> Ccing Ariel, maybe he can help with a test.
That would be great.
regards,
Joachim Eastwood
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