Fixed regulators cannot change their voltage, so disable all voltage
range checking for them, otherwise the driver fails to operate with
fixed regulators. Up to now it worked only by luck, because
regulator_is_supported_voltage() function returned incorrect values.
Commit "regulator: fix voltage check in regulator_is_supported_voltage()"
fixed that function and now additional check is needed for fixed
regulators.
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
---
drivers/mmc/host/sdhci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index c7851c0..6f6534e 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2923,7 +2923,7 @@ int sdhci_add_host(struct sdhci_host *host)
regulator_enable(host->vmmc);
#ifdef CONFIG_REGULATOR
- if (host->vmmc) {
+ if (host->vmmc && regulator_count_voltages(host->vmmc) > 1) {
ret = regulator_is_supported_voltage(host->vmmc, 3300000,
3300000);
if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_330)))
--
1.7.9.5
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