This patch is similar to the one for ipw2x00:
This patch is required because now pm-qos has 3 different flavors:
On kernels >= 2.6.36 the pm qos req is kzalloc()'d by pm-qos itself
On kernel = 2.6.35 the pm qos req uses the stack
On kernels < 2.6.35 the pm qos req is pegged to a unique name.
Signed-off-by: Vivek Natarajan <vnatarajan@xxxxxxxxxxx>
---
Rebased on top of my recent patch:
ath9k: Remove pm_qos request after hw unregister.
drivers/net/wireless/ath/ath9k/ath9k.h | 4 ++++
drivers/net/wireless/ath/ath9k/init.c | 19 +++++++++++++++++++
drivers/net/wireless/ath/ath9k/main.c | 15 +++++++++++++++
3 files changed, 38 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 170d44a..ab920fb 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -675,7 +675,11 @@ static inline void ath_read_cachesize(struct ath_common *common, int *csz)
}
extern struct ieee80211_ops ath9k_ops;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
extern struct pm_qos_request_list ath9k_pm_qos_req;
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
+extern struct pm_qos_request_list *ath9k_pm_qos_req;
+#endif
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 92bc5c5..56182fe 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -180,7 +180,12 @@ static const struct ath_ops ath9k_common_ops = {
.write = ath9k_iowrite32,
};
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
struct pm_qos_request_list ath9k_pm_qos_req;
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
+struct pm_qos_request_list *ath9k_pm_qos_req;
+#endif
+
/**************************/
/* Initialization */
@@ -759,8 +764,16 @@ int ath9k_init_device(u16 devid, struct ath_softc *sc, u16 subsysid,
ath_init_leds(sc);
ath_start_rfkill_poll(sc);
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
pm_qos_add_request(&ath9k_pm_qos_req, PM_QOS_CPU_DMA_LATENCY,
PM_QOS_DEFAULT_VALUE);
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
+ ath9k_pm_qos_req = pm_qos_add_request(PM_QOS_CPU_DMA_LATENCY,
+ PM_QOS_DEFAULT_VALUE);
+#else
+ pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, "ath9k",
+ PM_QOS_DEFAULT_VALUE);
+#endif
return 0;
@@ -830,7 +843,13 @@ void ath9k_deinit_device(struct ath_softc *sc)
}
ieee80211_unregister_hw(hw);
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
pm_qos_remove_request(&ath9k_pm_qos_req);
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
+ pm_qos_remove_request(ath9k_pm_qos_req);
+#else
+ pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, "ath9k");
+#endif
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 25d3ef4..fa378bc 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1244,7 +1244,14 @@ static int ath9k_start(struct ieee80211_hw *hw)
ath9k_btcoex_timer_resume(sc);
}
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
pm_qos_update_request(&ath9k_pm_qos_req, 55);
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
+ pm_qos_update_request(ath9k_pm_qos_req, 55);
+#else
+ pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY, "ath9k", 55);
+#endif
+
mutex_unlock:
mutex_unlock(&sc->mutex);
@@ -1423,7 +1430,15 @@ static void ath9k_stop(struct ieee80211_hw *hw)
sc->sc_flags |= SC_OP_INVALID;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
pm_qos_update_request(&ath9k_pm_qos_req, PM_QOS_DEFAULT_VALUE);
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35))
+ pm_qos_update_request(ath9k_pm_qos_req, PM_QOS_DEFAULT_VALUE);
+#else
+ pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY, "ath9k",
+ PM_QOS_DEFAULT_VALUE);
+#endif
+
mutex_unlock(&sc->mutex);
--
1.6.3.3
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