Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 22/30] mmc: sdhci-iproc: handle mmc_of_parse() errors during probe | Date | Mon, 4 Feb 2019 11:37:00 +0100 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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From: Stefan Wahren <stefan.wahren@i2se.com>
commit 2bd44dadd5bfb4135162322fd0b45a174d4ad5bf upstream.
We need to handle mmc_of_parse() errors during probe.
This finally fixes the wifi regression on Raspberry Pi 3 series. In error case the wifi chip was permanently in reset because of the power sequence depending on the deferred probe of the GPIO expander.
Fixes: b580c52d58d9 ("mmc: sdhci-iproc: add IPROC SDHCI driver") Cc: stable@vger.kernel.org Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/mmc/host/sdhci-iproc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/mmc/host/sdhci-iproc.c +++ b/drivers/mmc/host/sdhci-iproc.c @@ -242,7 +242,10 @@ static int sdhci_iproc_probe(struct plat iproc_host->data = iproc_data; - mmc_of_parse(host->mmc); + ret = mmc_of_parse(host->mmc); + if (ret) + goto err; + sdhci_get_of_property(pdev); host->mmc->caps |= iproc_host->data->mmc_caps;
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