From: Michal Kazior Date: Fri, 29 May 2015 05:35:24 +0000 (+0200) Subject: ath10k: fix possible ps sleep crash X-Git-Tag: v4.2-rc1~130^2~34^2~3^2~13 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0bcbbe679b66fee1b56def5cb30bfb4f616b1127;p=platform%2Fkernel%2Flinux-exynos.git 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 --- 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: