4.20-stable review patch. If anyone has any objections, please let me know.
------------------
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 @@ -296,7 +296,10 @@ 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_property(pdev);
host->mmc->caps |= iproc_host->data->mmc_caps;