| Message ID | 1432818224-17070-7-git-send-email-vaibhav.hiremath@linaro.org |
|---|---|
| State | New |
| Headers | show |
On Saturday 30 May 2015 02:16 AM, Robert Jarzmik wrote: > Vaibhav Hiremath <vaibhav.hiremath@linaro.org> writes: > >> From: Shouming Wang <wangshm@marvell.com> >> >> In case of timeout in pio mode of operation return I2C_RETRY. >> This behavior will be same as interrupt mode of operation. >> >> Signed-off-by: Shouming Wang <wangshm@marvell.com> >> [vaibhav.hiremath@linaro.org: Updated changelog] >> Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org> >> >> Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org> >> --- >> drivers/i2c/busses/i2c-pxa.c | 4 +++- >> 1 file changed, 3 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c >> index eb09071..2777d5c 100644 >> --- a/drivers/i2c/busses/i2c-pxa.c >> +++ b/drivers/i2c/busses/i2c-pxa.c >> @@ -841,8 +841,10 @@ static int i2c_pxa_do_pio_xfer(struct pxa_i2c *i2c, >> ret = i2c->msg_idx; >> >> out: >> - if (timeout == 0) >> + if (timeout == 0) { >> i2c_pxa_scream_blue_murder(i2c, "timeout"); >> + ret = I2C_RETRY; >> + } > Ok, looks good to me. > As it changes the dynamic behavior of i2c_pxa_pio_xfer(), I'd like to know how > it was tested (on which platform, and what was on the I2C bus). > I am testing on PXA1928 based platform, which still not available fully on Mainline. I have PMIC 88PM860 connected to I2C bus, with very basic features enabled. So I do probe/read/write testing. Having said that, I still did not test RETRY path, to make sure that RETRY really happens. As I mentioned, everything is under developement, I just enabled PMIC support on my baseline to validate I2C driver. Thanks, Vaibhav -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c index eb09071..2777d5c 100644 --- a/drivers/i2c/busses/i2c-pxa.c +++ b/drivers/i2c/busses/i2c-pxa.c @@ -841,8 +841,10 @@ static int i2c_pxa_do_pio_xfer(struct pxa_i2c *i2c, ret = i2c->msg_idx; out: - if (timeout == 0) + if (timeout == 0) { i2c_pxa_scream_blue_murder(i2c, "timeout"); + ret = I2C_RETRY; + } return ret; }