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ve&id=0488a6121dfe6cbd44de15ea3627913b7549a1e9'>ea3acc82ab876d048b2a448b35a9537677ece265 parent93c7018ec16bb83399dd4db61c361a6d6aba0d5a (diff)
rt2x00usb: fix anchor initialization
If device fail to initialize we can OOPS in rt2x00lib_remove_dev(), due to using uninitialized usb_anchor structure: [ 855.435820] ieee80211 phy3: rt2x00usb_vendor_request: Error - Vendor Request 0x07 failed for offset 0x1000 with error -19 [ 855.435826] ieee80211 phy3: rt2800_probe_rt: Error - Invalid RT chipset 0x0000, rev 0000 detected [ 855.435829] ieee80211 phy3: rt2x00lib_probe_dev: Error - Failed to allocate device [ 855.435845] BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 [ 855.435900] IP: _raw_spin_lock_irq+0xd/0x30 [ 855.435926] PGD 0 [ 855.435953] Oops: 0002 [#1] SMP <snip> [ 855.437011] Call Trace: [ 855.437029] ? usb_kill_anchored_urbs+0x27/0xc0 [ 855.437061] rt2x00lib_remove_dev+0x190/0x1c0 [rt2x00lib] [ 855.437097] rt2x00lib_probe_dev+0x246/0x7a0 [rt2x00lib] [ 855.437149] ? ieee80211_roc_setup+0x9e/0xd0 [mac80211] [ 855.437183] ? __kmalloc+0x1af/0x1f0 [ 855.437207] ? rt2x00usb_probe+0x13d/0xc50 [rt2x00usb] [ 855.437240] rt2x00usb_probe+0x155/0xc50 [rt2x00usb] [ 855.437273] rt2800usb_probe+0x15/0x20 [rt2800usb] [ 855.437304] usb_probe_interface+0x159/0x2d0 [ 855.437333] driver_probe_device+0x2bb/0x460 Patch changes initialization sequence to fix the problem. Cc: Vishal Thanki <vishalthanki@gmail.com> Fixes: 8b4c0009313f ("rt2x00usb: Use usb anchor to manage URB") Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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