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iio: qcom-rradc: Disable continuous mode when read fails

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Currently, when a channel is read in continuous mode and the read
operation fails, RR_ADC would be left enabled in continuous mode.
Disable the continuous mode in such cases so that the other read
operations which doesn't need continuous mode can go through.

Change-Id: I2bf257bd535e1e4a30e18b6257e584a5be96b69d
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
This commit is contained in:
Subbaraman Narayanamurthy 2017-09-19 20:16:43 -07:00 • committed by Siddartha Mohanadoss
parent f1034d926e
commit 8c20990f43
1 changed files with 7 additions and 5 deletions
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12
drivers/iio/adc/qcom-rradc.c
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@ -793,7 +793,7 @@ static int rradc_check_status_ready_with_retry(struct rradc_chip *chip,
static int rradc_read_channel_with_continuous_mode(struct rradc_chip *chip,
struct rradc_chan_prop *prop, u8 *buf)
{
int rc = 0;
int rc = 0, ret = 0;
u16 status = 0;
rc = rradc_enable_continuous_mode(chip);
@ -806,23 +806,25 @@ static int rradc_read_channel_with_continuous_mode(struct rradc_chip *chip,
rc = rradc_read(chip, status, buf, 1);
if (rc < 0) {
pr_err("status read failed:%d\n", rc);
return rc;
ret = rc;
goto disable;
}
rc = rradc_check_status_ready_with_retry(chip, prop,
buf, status);
if (rc < 0) {
pr_err("Status read failed:%d\n", rc);
return rc;
ret = rc;
}
disable:
rc = rradc_disable_continuous_mode(chip);
if (rc < 0) {
pr_err("Failed to switch to non continuous mode\n");
return rc;
ret = rc;
}
return rc;
return ret;
}
static int rradc_enable_batt_id_channel(struct rradc_chip *chip, bool enable)