mac80211: brcmfmac: backport remaining changes from 4.15

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 37 insertions, 0 deletions

diff --git a/package/kernel/mac80211/patches/305-v4.15-brcmfmac-change-driver-unbind-order-of-the-sdio-func.patch b/package/kernel/mac80211/patches/305-v4.15-brcmfmac-change-driver-unbind-order-of-the-sdio-func.patch
new file mode 100644
index 0000000000..3649bdda49
--- /dev/null
+++ b/package/kernel/mac80211/patches/305-v4.15-brcmfmac-change-driver-unbind-order-of-the-sdio-func.patch
@@ -0,0 +1,37 @@
+From 5c3de777bdaf48bd0cfb43097c0d0fb85056cab7 Mon Sep 17 00:00:00 2001
+From: Arend Van Spriel <arend.vanspriel@broadcom.com>
+Date: Sat, 25 Nov 2017 21:39:25 +0100
+Subject: [PATCH] brcmfmac: change driver unbind order of the sdio function
+ devices
+
+In the function brcmf_sdio_firmware_callback() the driver is
+unbound from the sdio function devices in the error path.
+However, the order in which it is done resulted in a use-after-free
+issue (see brcmf_ops_sdio_remove() in bcmsdh.c). Hence change
+the order and first unbind sdio function #2 device and then
+unbind sdio function #1 device.
+
+Cc: stable@vger.kernel.org # v4.12.x
+Fixes: 7a51461fc2da ("brcmfmac: unbind all devices upon failure in firmware callback")
+Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
+Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
+Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
+Reviewed-by: Franky Lin <franky.lin@broadcom.com>
+Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
+@@ -4121,8 +4121,8 @@ release:
+ 	sdio_release_host(sdiodev->func[1]);
+ fail:
+ 	brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), err);
+-	device_release_driver(dev);
+ 	device_release_driver(&sdiodev->func[2]->dev);
++	device_release_driver(dev);
+ }
+ 
+ struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)