diff options
| author | Fabrizio Castro <fabrizio.castro@bp.renesas.com> | 2017-09-22 14:22:17 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-10-30 13:46:03 +0300 |
| commit | a3d95d1d4007b1fefd6d8b12db26fda05de05cfb (patch) | |
| tree | d92387fe261b571f3b578dbb99cd8cc26fa6f475 | |
| parent | aaab3c46557029b760a476d5afc070a55df935b4 (diff) | |
| download | linux-a3d95d1d4007b1fefd6d8b12db26fda05de05cfb.tar.xz | |
mmc: tmio: check mmc_regulator_get_supply return value
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>
| -rw-r--r-- | drivers/mmc/host/tmio_mmc_core.c | 5 |
1 files changed, 4 insertions, 1 deletions
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) |