From 98c316e348bedffa730e6f1e4baeb8a3c3e0f28b Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Thu, 25 Nov 2010 18:26:07 +0100 Subject: [PATCH] ath9k: use per-device struct for pm_qos_* operations The ath9k driver uses a shared pm_qos_request_list structure for all devices. This causes the following warning if more than one device is present in the system: WARNING: at kernel/pm_qos_params.c:234 ath9k_init_device+0x5e8/0x6b0() pm_qos_add_request() called for already added request Modules linked in: Call Trace: [<802b1cdc>] dump_stack+0x8/0x34 [<8007dd90>] warn_slowpath_common+0x78/0xa4 [<8007de44>] warn_slowpath_fmt+0x2c/0x38 [<801b0828>] ath9k_init_device+0x5e8/0x6b0 [<801bc508>] ath_pci_probe+0x2dc/0x39c [<80176254>] pci_device_probe+0x64/0xa4 [<8019471c>] driver_probe_device+0xbc/0x188 [<80194854>] __driver_attach+0x6c/0xa4 [<80193e20>] bus_for_each_dev+0x60/0xb0 [<80193580>] bus_add_driver+0xcc/0x268 [<80194c08>] driver_register+0xe0/0x198 [<801764e0>] __pci_register_driver+0x50/0xe0 [<80365f48>] ath9k_init+0x3c/0x6c [<8006050c>] do_one_initcall+0xfc/0x1d8 [<80355340>] kernel_init+0xd4/0x174 [<800639a4>] kernel_thread_helper+0x10/0x18 ---[ end trace 5345fc6f870564a6 ]--- This patch fixes that warning by using a separate pm_qos_request_list sructure for each device. Signed-off-by: Gabor Juhos Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ath9k.h | 4 +++- drivers/net/wireless/ath/ath9k/init.c | 7 ++----- drivers/net/wireless/ath/ath9k/main.c | 5 ++--- 3 files changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h index 170d44a35cc..0d0bec3628e 100644 --- a/drivers/net/wireless/ath/ath9k/ath9k.h +++ b/drivers/net/wireless/ath/ath9k/ath9k.h @@ -21,6 +21,7 @@ #include #include #include +#include #include "debug.h" #include "common.h" @@ -646,6 +647,8 @@ struct ath_softc { struct ath_descdma txsdma; struct ath_ant_comb ant_comb; + + struct pm_qos_request_list pm_qos_req; }; struct ath_wiphy { @@ -675,7 +678,6 @@ static inline void ath_read_cachesize(struct ath_common *common, int *csz) } extern struct ieee80211_ops ath9k_ops; -extern struct pm_qos_request_list ath9k_pm_qos_req; extern int modparam_nohwcrypt; extern int led_blink; diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c index 92bc5c5f487..c29eea26a77 100644 --- a/drivers/net/wireless/ath/ath9k/init.c +++ b/drivers/net/wireless/ath/ath9k/init.c @@ -15,7 +15,6 @@ */ #include -#include #include "ath9k.h" @@ -180,8 +179,6 @@ static const struct ath_ops ath9k_common_ops = { .write = ath9k_iowrite32, }; -struct pm_qos_request_list ath9k_pm_qos_req; - /**************************/ /* Initialization */ /**************************/ @@ -759,7 +756,7 @@ int ath9k_init_device(u16 devid, struct ath_softc *sc, u16 subsysid, ath_init_leds(sc); ath_start_rfkill_poll(sc); - pm_qos_add_request(&ath9k_pm_qos_req, PM_QOS_CPU_DMA_LATENCY, + pm_qos_add_request(&sc->pm_qos_req, PM_QOS_CPU_DMA_LATENCY, PM_QOS_DEFAULT_VALUE); return 0; @@ -830,7 +827,7 @@ void ath9k_deinit_device(struct ath_softc *sc) } ieee80211_unregister_hw(hw); - pm_qos_remove_request(&ath9k_pm_qos_req); + pm_qos_remove_request(&sc->pm_qos_req); ath_rx_cleanup(sc); ath_tx_cleanup(sc); ath9k_deinit_softc(sc); diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 25d3ef4c338..1cdbdbe33ab 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -15,7 +15,6 @@ */ #include -#include #include "ath9k.h" #include "btcoex.h" @@ -1244,7 +1243,7 @@ static int ath9k_start(struct ieee80211_hw *hw) ath9k_btcoex_timer_resume(sc); } - pm_qos_update_request(&ath9k_pm_qos_req, 55); + pm_qos_update_request(&sc->pm_qos_req, 55); mutex_unlock: mutex_unlock(&sc->mutex); @@ -1423,7 +1422,7 @@ static void ath9k_stop(struct ieee80211_hw *hw) sc->sc_flags |= SC_OP_INVALID; - pm_qos_update_request(&ath9k_pm_qos_req, PM_QOS_DEFAULT_VALUE); + pm_qos_update_request(&sc->pm_qos_req, PM_QOS_DEFAULT_VALUE); mutex_unlock(&sc->mutex); -- 2.41.0