提交 98c316e3 编写于 作者: G Gabor Juhos 提交者: John W. Linville

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: NGabor Juhos <juhosg@openwrt.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
上级 16ccdf0d
master alk-4.19.24 alk-4.19.30 alk-4.19.34 alk-4.19.36 alk-4.19.43 alk-4.19.48 alk-4.19.57 ck-4.19.67 ck-4.19.81 ck-4.19.91 github/fork/deepanshu1422/fix-typo-in-comment github/fork/haosdent/fix-typo linux-next v4.19.91 v4.19.90 v4.19.89 v4.19.88 v4.19.87 v4.19.86 v4.19.85 v4.19.84 v4.19.83 v4.19.82 v4.19.81 v4.19.80 v4.19.79 v4.19.78 v4.19.77 v4.19.76 v4.19.75 v4.19.74 v4.19.73 v4.19.72 v4.19.71 v4.19.70 v4.19.69 v4.19.68 v4.19.67 v4.19.66 v4.19.65 v4.19.64 v4.19.63 v4.19.62 v4.19.61 v4.19.60 v4.19.59 v4.19.58 v4.19.57 v4.19.56 v4.19.55 v4.19.54 v4.19.53 v4.19.52 v4.19.51 v4.19.50 v4.19.49 v4.19.48 v4.19.47 v4.19.46 v4.19.45 v4.19.44 v4.19.43 v4.19.42 v4.19.41 v4.19.40 v4.19.39 v4.19.38 v4.19.37 v4.19.36 v4.19.35 v4.19.34 v4.19.33 v4.19.32 v4.19.31 v4.19.30 v4.19.29 v4.19.28 v4.19.27 v4.19.26 v4.19.25 v4.19.24 v4.19.23 v4.19.22 v4.19.21 v4.19.20 v4.19.19 v4.19.18 v4.19.17 v4.19.16 v4.19.15 v4.19.14 v4.19.13 v4.19.12 v4.19.11 v4.19.10 v4.19.9 v4.19.8 v4.19.7 v4.19.6 v4.19.5 v4.19.4 v4.19.3 v4.19.2 v4.19.1 v4.19 v4.19-rc8 v4.19-rc7 v4.19-rc6 v4.19-rc5 v4.19-rc4 v4.19-rc3 v4.19-rc2 v4.19-rc1 ck-release-21 ck-release-20 ck-release-19.2 ck-release-19.1 ck-release-19 ck-release-18 ck-release-17.2 ck-release-17.1 ck-release-17 ck-release-16 ck-release-15.1 ck-release-15 ck-release-14 ck-release-13.2 ck-release-13 ck-release-12 ck-release-11 ck-release-10 ck-release-9 ck-release-7 alk-release-15 alk-release-14 alk-release-13.2 alk-release-13 alk-release-12 alk-release-11 alk-release-10 alk-release-9 alk-release-7
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......@@ -21,6 +21,7 @@
#include <linux/device.h>
#include <linux/leds.h>
#include <linux/completion.h>
#include <linux/pm_qos_params.h>
#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;
......
......@@ -15,7 +15,6 @@
*/
#include <linux/slab.h>
#include <linux/pm_qos_params.h>
#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);
......
......@@ -15,7 +15,6 @@
*/
#include <linux/nl80211.h>
#include <linux/pm_qos_params.h>
#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);
......
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