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38 lines
1.6 KiB
Diff
38 lines
1.6 KiB
Diff
From 5c3de777bdaf48bd0cfb43097c0d0fb85056cab7 Mon Sep 17 00:00:00 2001
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From: Arend Van Spriel <arend.vanspriel@broadcom.com>
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Date: Sat, 25 Nov 2017 21:39:25 +0100
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Subject: [PATCH] brcmfmac: change driver unbind order of the sdio function
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devices
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In the function brcmf_sdio_firmware_callback() the driver is
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unbound from the sdio function devices in the error path.
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However, the order in which it is done resulted in a use-after-free
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issue (see brcmf_ops_sdio_remove() in bcmsdh.c). Hence change
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the order and first unbind sdio function #2 device and then
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unbind sdio function #1 device.
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Cc: stable@vger.kernel.org # v4.12.x
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Fixes: 7a51461fc2da ("brcmfmac: unbind all devices upon failure in firmware callback")
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Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
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Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
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Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
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Reviewed-by: Franky Lin <franky.lin@broadcom.com>
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Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
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@@ -4121,8 +4121,8 @@ release:
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sdio_release_host(sdiodev->func[1]);
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fail:
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brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), err);
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- device_release_driver(dev);
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device_release_driver(&sdiodev->func[2]->dev);
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+ device_release_driver(dev);
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}
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struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
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