On 11/01/17 04:17, Zhang Rui wrote: >>From 760aca40f3f10065f888cdf18cb20491f8b52264 Mon Sep 17 00:00:00 2001 > From: Zhang Rui <rui.zhang@xxxxxxxxx> > Date: Wed, 7 Dec 2016 13:13:31 +0800 > Subject: [PATCH v2] mmc: sdhci-acpi: support deferred probe > > With commit 67bf5156edc4 (gpio / ACPI: fix returned error from > acpi_dev_gpio_irq_get()), mmc_gpiod_request_cd() returns -EPROBE_DEFER if You took out the "" which are needed, and the email contains lines ending with CRLF instead of LF. > GPIO is not ready when sdhci-acpi driver is probed, and sdhci-acpi driver > should be probed again later in this case. > > This fixes an order issue when both GPIO and sdhci-acpi drivers are built > as modules. > > CC: stable@xxxxxxxxxxxxxxx # v4.9 > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=177101 > Tested-by: Jonas Aaberg <cja@xxxxxxx> > Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx> > Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx> > --- > drivers/mmc/host/sdhci-acpi.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c > index 160f695..5440323 100644 > --- a/drivers/mmc/host/sdhci-acpi.c > +++ b/drivers/mmc/host/sdhci-acpi.c > @@ -466,7 +466,10 @@ static int sdhci_acpi_probe(struct platform_device *pdev) > if (sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD)) { > bool v = sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD_OVERRIDE_LEVEL); > > - if (mmc_gpiod_request_cd(host->mmc, NULL, 0, v, 0, NULL)) { > + err = mmc_gpiod_request_cd(host->mmc, NULL, 0, v, 0, NULL); > + if (err) { > + if (err == -EPROBE_DEFER) > + goto err_free; > dev_warn(dev, "failed to setup card detect gpio\n"); > c->use_runtime_pm = false; > } > -- > 2.7.4 > > -- 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
