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authorJohannes Berg <johannes.berg@intel.com>2016-08-08 08:45:33 +0200
committerJohannes Berg <johannes.berg@intel.com>2016-08-08 08:49:50 +0200
commit4d0bd46a4d55383f7b925e6cf7865a77e0f0e020 (patch)
tree4fe35253601a7db57f1b089d462a0bf31f6b33fb /net
parent2439ca0402091badb24415e1b073ba12b34ba423 (diff)
downloadtalos-obmc-linux-4d0bd46a4d55383f7b925e6cf7865a77e0f0e020.tar.gz
talos-obmc-linux-4d0bd46a4d55383f7b925e6cf7865a77e0f0e020.zip
Revert "wext: Fix 32 bit iwpriv compatibility issue with 64 bit Kernel"
This reverts commit 3d5fdff46c4b2b9534fa2f9fc78e90a48e0ff724. Ben Hutchings pointed out that the commit isn't safe since it assumes that the structure used by the driver is iw_point, when in fact there's no way to know about that. Fortunately, the only driver in the tree that ever runs this code path is the wilc1000 staging driver, so it doesn't really matter. Clearly I should have investigated this better before applying, sorry. Reported-by: Ben Hutchings <ben@decadent.org.uk> Cc: stable@vger.kernel.org [though I guess it doesn't matter much] Fixes: 3d5fdff46c4b ("wext: Fix 32 bit iwpriv compatibility issue with 64 bit Kernel") Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
-rw-r--r--net/wireless/wext-core.c25
1 files changed, 2 insertions, 23 deletions
diff --git a/net/wireless/wext-core.c b/net/wireless/wext-core.c
index dbb2738e356a..6250b1cfcde5 100644
--- a/net/wireless/wext-core.c
+++ b/net/wireless/wext-core.c
@@ -958,29 +958,8 @@ static int wireless_process_ioctl(struct net *net, struct ifreq *ifr,
return private(dev, iwr, cmd, info, handler);
}
/* Old driver API : call driver ioctl handler */
- if (dev->netdev_ops->ndo_do_ioctl) {
-#ifdef CONFIG_COMPAT
- if (info->flags & IW_REQUEST_FLAG_COMPAT) {
- int ret = 0;
- struct iwreq iwr_lcl;
- struct compat_iw_point *iwp_compat = (void *) &iwr->u.data;
-
- memcpy(&iwr_lcl, iwr, sizeof(struct iwreq));
- iwr_lcl.u.data.pointer = compat_ptr(iwp_compat->pointer);
- iwr_lcl.u.data.length = iwp_compat->length;
- iwr_lcl.u.data.flags = iwp_compat->flags;
-
- ret = dev->netdev_ops->ndo_do_ioctl(dev, (void *) &iwr_lcl, cmd);
-
- iwp_compat->pointer = ptr_to_compat(iwr_lcl.u.data.pointer);
- iwp_compat->length = iwr_lcl.u.data.length;
- iwp_compat->flags = iwr_lcl.u.data.flags;
-
- return ret;
- } else
-#endif
- return dev->netdev_ops->ndo_do_ioctl(dev, ifr, cmd);
- }
+ if (dev->netdev_ops->ndo_do_ioctl)
+ return dev->netdev_ops->ndo_do_ioctl(dev, ifr, cmd);
return -EOPNOTSUPP;
}
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