From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kishon Vijay Abraham I Subject: [PATCH 02/17] mmc: host: omap_hsmmc: return error from omap_hsmmc_reg_get on -EPROBE_DEFER Date: Wed, 29 Jul 2015 16:39:32 +0530 Message-ID: <1438168187-1614-3-git-send-email-kishon@ti.com> References: <1438168187-1614-1-git-send-email-kishon@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1438168187-1614-1-git-send-email-kishon@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: tony@atomide.com, ulf.hansson@linaro.org, afenkart@gmail.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mmc@vger.kernel.org Cc: nsekhar@ti.com, kishon@ti.com List-Id: devicetree@vger.kernel.org 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 --- 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) -- 1.7.9.5