Merge tag 'iio-fixes-for-3.15a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

First found of IIO fixes for the 3.15 cycle.

* Fix the platform data support for the at91 adc driver.
* A couple of related follow up patches get the support working again
  for at91sam9260 and at91sam9g45 as the earlier patch results in a device
  name change.
* A default timer value in the at91 adc driver was bonkers.  Make it sane.
* Fix incorrect reporting of the integration time for the cm32181 light sensor
* Fix a missing break in the ad2s1200 driver which would have give a false
  error return.
* Make sure buffer scan mask queries from userspace return 0/1 rather than
  a fairly random value depending on their implementation of test_bit
* Fix leak of the i2c client and a null pointer dereference in the cm36651
  driver.
* Fix a build warning on avr32 for the mxs-lradc (not exactly a critical
  combination - but the issue was real).

1 files changed, 27 insertions, 6 deletions

diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c
index 5b1aa027c034..89777ed9abd8 100644
--- a/drivers/iio/adc/at91_adc.c
+++ b/drivers/iio/adc/at91_adc.c
@@ -765,14 +765,17 @@ static int at91_adc_probe_pdata(struct at91_adc_state *st,
 	if (!pdata)
 		return -EINVAL;
 
+	st->caps = (struct at91_adc_caps *)
+			platform_get_device_id(pdev)->driver_data;
+
 	st->use_external = pdata->use_external_triggers;
 	st->vref_mv = pdata->vref;
 	st->channels_mask = pdata->channels_used;
-	st->num_channels = pdata->num_channels;
+	st->num_channels = st->caps->num_channels;
 	st->startup_time = pdata->startup_time;
 	st->trigger_number = pdata->trigger_number;
 	st->trigger_list = pdata->trigger_list;
-	st->registers = pdata->registers;
+	st->registers = &st->caps->registers;
 
 	return 0;
 }
@@ -1004,8 +1007,11 @@ static int at91_adc_probe(struct platform_device *pdev)
 	 * the best converted final value between two channels selection
 	 * The formula thus is : Sample and Hold Time = (shtim + 1) / ADCClock
 	 */
-	shtim = round_up((st->sample_hold_time * adc_clk_khz /
-			  1000) - 1, 1);
+	if (st->sample_hold_time > 0)
+		shtim = round_up((st->sample_hold_time * adc_clk_khz / 1000)
+				 - 1, 1);
+	else
+		shtim = 0;
 
 	reg = AT91_ADC_PRESCAL_(prsc) & st->registers->mr_prescal_mask;
 	reg |= AT91_ADC_STARTUP_(ticks) & st->registers->mr_startup_mask;
@@ -1101,7 +1107,6 @@ static int at91_adc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_OF
 static struct at91_adc_caps at91sam9260_caps = {
 	.calc_startup_ticks = calc_startup_ticks_9260,
 	.num_channels = 4,
@@ -1154,11 +1159,27 @@ static const struct of_device_id at91_adc_dt_ids[] = {
 	{},
 };
 MODULE_DEVICE_TABLE(of, at91_adc_dt_ids);
-#endif
+
+static const struct platform_device_id at91_adc_ids[] = {
+	{
+		.name = "at91sam9260-adc",
+		.driver_data = (unsigned long)&at91sam9260_caps,
+	}, {
+		.name = "at91sam9g45-adc",
+		.driver_data = (unsigned long)&at91sam9g45_caps,
+	}, {
+		.name = "at91sam9x5-adc",
+		.driver_data = (unsigned long)&at91sam9x5_caps,
+	}, {
+		/* terminator */
+	}
+};
+MODULE_DEVICE_TABLE(platform, at91_adc_ids);
 
 static struct platform_driver at91_adc_driver = {
 	.probe = at91_adc_probe,
 	.remove = at91_adc_remove,
+	.id_table = at91_adc_ids,
 	.driver = {
 		   .name = DRIVER_NAME,
 		   .of_match_table = of_match_ptr(at91_adc_dt_ids),