From 0bcbbe679b66fee1b56def5cb30bfb4f616b1127 Mon Sep 17 00:00:00 2001 From: Michal Kazior Date: Fri, 29 May 2015 07:35:24 +0200 Subject: [PATCH] ath10k: fix possible ps sleep crash If probing failed pci sleep timer could remain running and trigger after ath10k structures were freed causing invalid pointer dereference: BUG: unable to handle kernel paging request at ffffc90001c80004 IP: [] iowrite32+0x38/0x40 ... Call Trace: [] ? __ath10k_pci_sleep+0x48/0x60 [ath10k_pci] [] ath10k_pci_ps_timer+0x5e/0x80 [ath10k_pci] [] call_timer_fn+0x3e/0x120 [] ? ath10k_pci_wake+0x150/0x150 [ath10k_pci] [] run_timer_softirq+0x201/0x2e0 [] __do_softirq+0xaf/0x290 [] irq_exit+0x95/0xa0 [] smp_apic_timer_interrupt+0x46/0x60 [] apic_timer_interrupt+0x6e/0x80 Fixes: 77258d409ce4 ("ath10k: enable pci soc powersaving") Signed-off-by: Michal Kazior Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/pci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c index 1b469da..9da36c7 100644 --- a/drivers/net/wireless/ath/ath10k/pci.c +++ b/drivers/net/wireless/ath/ath10k/pci.c @@ -2850,6 +2850,7 @@ err_free_pipes: ath10k_pci_free_pipes(ar); err_sleep: + ath10k_pci_sleep_sync(ar); ath10k_pci_release(ar); err_core_destroy: -- 2.7.4