Another fix for issue affecting Raspberry Pi 3-series WiFi (rhbz 1652093)

This commit is contained in:
Peter Robinson 2018-12-24 02:47:39 +00:00
parent f08646fff0
commit 510d60d1e2
2 changed files with 144 additions and 0 deletions

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@ -0,0 +1,138 @@
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From: Stefan Wahren <stefan.wahren@i2se.com>
To: Al Cooper <alcooperx@gmail.com>, Adrian Hunter <adrian.hunter@intel.com>,
Ulf Hansson <ulf.hansson@linaro.org>
Subject: [PATCH 1/2] mmc: sdhci-iproc: handle mmc_of_parse() errors during
probe
Date: Sun, 23 Dec 2018 21:59:17 +0100
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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>
---
drivers/mmc/host/sdhci-iproc.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci-iproc.c b/drivers/mmc/host/sdhci-iproc.c
index 0db9905..9d12c06 100644
--- a/drivers/mmc/host/sdhci-iproc.c
+++ b/drivers/mmc/host/sdhci-iproc.c
@@ -296,7 +296,10 @@ static int sdhci_iproc_probe(struct platform_device *pdev)
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;

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@ -593,6 +593,9 @@ Patch334: bcm2837-dts-add-Raspberry-Pi-3-A.patch
# Fixes for bcm2835 mmc (sdcard) driver
Patch335: bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch
# https://patchwork.kernel.org/patch/10741809/
Patch336: bcm2835-mmc-sdhci-iproc-handle-mmc_of_parse-errors-during-probe.patch
# Patches enabling device specific brcm firmware nvram
# https://www.spinics.net/lists/linux-wireless/msg178827.html
Patch340: brcmfmac-Remove-firmware-loading-code-duplication.patch
@ -1890,6 +1893,9 @@ fi
#
#
%changelog
* Mon Dec 24 2018 Peter Robinson <pbrobinson@fedoraproject.org>
- Another fix for issue affecting Raspberry Pi 3-series WiFi (rhbz 1652093)
* Fri Dec 21 2018 Justin M. Forbes <jforbes@fedoraproject.org> - 4.20.0-0.rc7.git3.1
- Linux v4.20-rc7-214-g9097a058d49e