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Message-Id: <20170522110921.15395-4-jglauber@cavium.com>
Date: Mon, 22 May 2017 13:09:21 +0200
From: Jan Glauber <jglauber@...ium.com>
To: Ulf Hansson <ulf.hansson@...aro.org>
Cc: David Daney <david.daney@...ium.com>,
Rob Herring <robh+dt@...nel.org>,
Frank Rowand <frowand.list@...il.com>,
"Steven J . Hill" <Steven.Hill@...ium.com>,
linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org,
Jan Glauber <jglauber@...ium.com>
Subject: [PATCH v2 3/3] mmc: cavium: Fix probing race with regulator
If the regulator probing is not yet finished this driver
might catch a -EPROBE_DEFER. Returning after this condition
did not remove the created platform device. On a repeated
call to the probe function the of_platform_device_create
fails.
Calling of_platform_device_destroy after EPROBE_DEFER resolves
this bug.
Signed-off-by: Jan Glauber <jglauber@...ium.com>
---
drivers/mmc/host/cavium-octeon.c | 11 ++++++++++-
drivers/mmc/host/cavium-thunderx.c | 6 ++++++
2 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/cavium-octeon.c b/drivers/mmc/host/cavium-octeon.c
index cbb5663..951d2cd 100644
--- a/drivers/mmc/host/cavium-octeon.c
+++ b/drivers/mmc/host/cavium-octeon.c
@@ -288,11 +288,20 @@ static int octeon_mmc_probe(struct platform_device *pdev)
if (ret) {
dev_err(&pdev->dev, "Error populating slots\n");
octeon_mmc_set_shared_power(host, 0);
- return ret;
+ goto error;
}
i++;
}
return 0;
+
+error:
+ for (i = 0; i < CAVIUM_MAX_MMC; i++) {
+ if (host->slot[i])
+ cvm_mmc_of_slot_remove(host->slot[i]);
+ if (host->slot_pdev[i])
+ of_platform_device_destroy(&host->slot_pdev[i]->dev, NULL);
+ }
+ return ret;
}
static int octeon_mmc_remove(struct platform_device *pdev)
diff --git a/drivers/mmc/host/cavium-thunderx.c b/drivers/mmc/host/cavium-thunderx.c
index fe3d772..b9cc959 100644
--- a/drivers/mmc/host/cavium-thunderx.c
+++ b/drivers/mmc/host/cavium-thunderx.c
@@ -146,6 +146,12 @@ static int thunder_mmc_probe(struct pci_dev *pdev,
return 0;
error:
+ for (i = 0; i < CAVIUM_MAX_MMC; i++) {
+ if (host->slot[i])
+ cvm_mmc_of_slot_remove(host->slot[i]);
+ if (host->slot_pdev[i])
+ of_platform_device_destroy(&host->slot_pdev[i]->dev, NULL);
+ }
clk_disable_unprepare(host->clk);
return ret;
}
--
2.9.0.rc0.21.g7777322
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