Another fix for issue affecting Raspberry Pi 3-series WiFi (rhbz 1652093)
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Peter Robinson
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@ -0,0 +1,138 @@
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From: Stefan Wahren <stefan.wahren@i2se.com>
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To: Al Cooper <alcooperx@gmail.com>, Adrian Hunter <adrian.hunter@intel.com>,
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Ulf Hansson <ulf.hansson@linaro.org>
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Subject: [PATCH 1/2] mmc: sdhci-iproc: handle mmc_of_parse() errors during
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probe
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Date: Sun, 23 Dec 2018 21:59:17 +0100
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We need to handle mmc_of_parse() errors during probe.
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This finally fixes the wifi regression on Raspberry Pi 3 series.
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In error case the wifi chip was permanently in reset because of
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the power sequence depending on the deferred probe of the GPIO expander.
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Fixes: b580c52d58d9 ("mmc: sdhci-iproc: add IPROC SDHCI driver")
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Cc: stable@vger.kernel.org
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Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
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---
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drivers/mmc/host/sdhci-iproc.c | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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diff --git a/drivers/mmc/host/sdhci-iproc.c b/drivers/mmc/host/sdhci-iproc.c
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index 0db9905..9d12c06 100644
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--- a/drivers/mmc/host/sdhci-iproc.c
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+++ b/drivers/mmc/host/sdhci-iproc.c
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@@ -296,7 +296,10 @@ static int sdhci_iproc_probe(struct platform_device *pdev)
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iproc_host->data = iproc_data;
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- mmc_of_parse(host->mmc);
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+ ret = mmc_of_parse(host->mmc);
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+ if (ret)
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+ goto err;
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+
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sdhci_get_property(pdev);
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host->mmc->caps |= iproc_host->data->mmc_caps;
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@ -593,6 +593,9 @@ Patch334: bcm2837-dts-add-Raspberry-Pi-3-A.patch
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# Fixes for bcm2835 mmc (sdcard) driver
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Patch335: bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch
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# https://patchwork.kernel.org/patch/10741809/
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Patch336: bcm2835-mmc-sdhci-iproc-handle-mmc_of_parse-errors-during-probe.patch
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# Patches enabling device specific brcm firmware nvram
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# https://www.spinics.net/lists/linux-wireless/msg178827.html
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Patch340: brcmfmac-Remove-firmware-loading-code-duplication.patch
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@ -1890,6 +1893,9 @@ fi
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#
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#
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%changelog
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* Mon Dec 24 2018 Peter Robinson <pbrobinson@fedoraproject.org>
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- Another fix for issue affecting Raspberry Pi 3-series WiFi (rhbz 1652093)
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* Fri Dec 21 2018 Justin M. Forbes <jforbes@fedoraproject.org> - 4.20.0-0.rc7.git3.1
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- Linux v4.20-rc7-214-g9097a058d49e
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