[PATCH 02/17] mmc: host: omap_hsmmc: return error from omap_hsmmc_reg_get on -EPROBE_DEFER
From: Kishon Vijay Abraham I <hidden>
Date: 2015-07-29 11:10:44
Also in:
linux-devicetree, linux-mmc, linux-omap, lkml
Subsystem:
multimedia card (mmc), secure digital (sd) and sdio subsystem, omap hs mmc support, the rest · Maintainers:
Ulf Hansson, Linus Torvalds
EPROBE_DEFER is not fatal and it means the regulator can still be obtained. Hence return error if devm_regulator_get_optional for vmmc_aux and pbias returns -EPROBE_DEFER. This gives omap_hsmmc driver another chance to get these regulators. Signed-off-by: Kishon Vijay Abraham I <redacted> --- drivers/mmc/host/omap_hsmmc.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index b673e59..7f7625d 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c@@ -369,10 +369,26 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) /* Allow an aux regulator */ reg = devm_regulator_get_optional(host->dev, "vmmc_aux"); - host->vcc_aux = IS_ERR(reg) ? NULL : reg; + if (IS_ERR(reg)) { + if (PTR_ERR(reg) == -EPROBE_DEFER) + return -EPROBE_DEFER; + host->vcc_aux = NULL; + dev_dbg(host->dev, "unable to get vmmc_aux regulator %ld\n", + PTR_ERR(reg)); + } else { + host->vcc_aux = reg; + } reg = devm_regulator_get_optional(host->dev, "pbias"); - host->pbias = IS_ERR(reg) ? NULL : reg; + if (IS_ERR(reg)) { + if (PTR_ERR(reg) == -EPROBE_DEFER) + return -EPROBE_DEFER; + host->pbias = NULL; + dev_dbg(host->dev, "unable to get pbias regulator %ld\n", + PTR_ERR(reg)); + } else { + host->pbias = reg; + } /* For eMMC do not power off when not in sleep state */ if (mmc_pdata(host)->no_regulator_off_init)
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1.7.9.5