在 2016/5/4 15:14, Jaehoon Chung 写道:
If vqmmc is used and failed to switch voltage, then retry to switch voltage. MMC core is providing the retrying scheame. Signed-off-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx> --- drivers/mmc/host/dw_mmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 9dd1bd3..28602cc 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -1416,7 +1416,7 @@ static int dw_mci_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios) dev_dbg(&mmc->class_dev, "Regulator set error %d - %s V\n", ret, uhs & v18 ? "1.8" : "3.3"); - return ret; + return -EAGAIN; } }
If not vqmmc is assigned, dw_mci_switch_voltage still returns success to mmc core?
mci_writel(host, UHS_REG, uhs);
-- Best Regards Shawn Lin -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
