From: Fabrizio Castro fabrizio.castro@bp.renesas.com
[ Upstream commit a3d95d1d4007b1fefd6d8b12db26fda05de05cfb ]
mmc_regulator_get_supply returns -EPROBE_DEFER if either vmmc or vqmmc regulators had their probing deferred. vqmmc regulator is needed by UHS to work properly, therefore this patch checks the value returned by mmc_regulator_get_supply to make sure we have a reference to both vmmc and vqmmc (if found in the DT).
Signed-off-by: Fabrizio Castro fabrizio.castro@bp.renesas.com Reviewed-by: Wolfram Sang wsa+renesas@sang-engineering.com Tested-by: Wolfram Sang wsa+renesas@sang-engineering.com Signed-off-by: Ulf Hansson ulf.hansson@linaro.org Signed-off-by: Sasha Levin alexander.levin@verizon.com --- drivers/mmc/host/tmio_mmc_core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c index 9c4e6199b854..3a6d49f07e22 100644 --- a/drivers/mmc/host/tmio_mmc_core.c +++ b/drivers/mmc/host/tmio_mmc_core.c @@ -1113,8 +1113,11 @@ static int tmio_mmc_init_ocr(struct tmio_mmc_host *host) { struct tmio_mmc_data *pdata = host->pdata; struct mmc_host *mmc = host->mmc; + int err;
- mmc_regulator_get_supply(mmc); + err = mmc_regulator_get_supply(mmc); + if (err) + return err;
/* use ocr_mask if no regulator */ if (!mmc->ocr_avail)