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| author | Mohammed Shafi Shajakhan <mshajakhan@atheros.com> | 2011-02-15 21:29:32 +0530 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-02-15 11:16:00 -0500 |
| commit | 0f5cd45960173ba5b36727decbb4a241cbd35ef9 (patch) | |
| tree | 6e4528d6eee03aec59b3b630aae272f34e7f27b7 /drivers/net/wireless/ath/ath9k/ath9k.h | |
| parent | a7b545f7fe753ca3dc1b51ca57f90cd59d974e44 (diff) | |
| download | kernel_samsung_smdk4412-0f5cd45960173ba5b36727decbb4a241cbd35ef9.zip kernel_samsung_smdk4412-0f5cd45960173ba5b36727decbb4a241cbd35ef9.tar.gz kernel_samsung_smdk4412-0f5cd45960173ba5b36727decbb4a241cbd35ef9.tar.bz2 | |
ath9k: Fix ath9k prevents CPU to enter C3 states
The DMA latency issue is observed only in Intel pinetrail platforms
but in the driver we had a default PM-QOS value of 55. This caused
unnecessary power consumption and battery drain in other platforms.
Remove the pm-qos thing in the driver code and address the throughput
issue in Intel pinetrail platfroms in user space using any one of
the scripts in below links:
http://www.kernel.org/pub/linux/kernel/people/mcgrof/scripts/cpudmalatency.c
http://johannes.sipsolutions.net/files/netlatency.c.txt
More details can be found in the following bugzilla link:
https://bugzilla.kernel.org/show_bug.cgi?id=27532
This reverts the following commits:
98c316e348bedffa730e6f1e4baeb8a3c3e0f28b
4dc3530df7c0428b41c00399a7ee8c929406d181
10598c124ecabbbfd7522f74de19b8f7d52a1bee
Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/ath9k.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ath9k.h | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h index 23838e3..1a7fa6e 100644 --- a/drivers/net/wireless/ath/ath9k/ath9k.h +++ b/drivers/net/wireless/ath/ath9k/ath9k.h @@ -21,7 +21,6 @@ #include <linux/device.h> #include <linux/leds.h> #include <linux/completion.h> -#include <linux/pm_qos_params.h> #include "debug.h" #include "common.h" @@ -57,8 +56,6 @@ struct ath_node; #define A_MAX(a, b) ((a) > (b) ? (a) : (b)) -#define ATH9K_PM_QOS_DEFAULT_VALUE 55 - #define TSF_TO_TU(_h,_l) \ ((((u32)(_h)) << 22) | (((u32)(_l)) >> 10)) @@ -633,8 +630,6 @@ struct ath_softc { struct ath_descdma txsdma; struct ath_ant_comb ant_comb; - - struct pm_qos_request_list pm_qos_req; }; struct ath_wiphy { @@ -666,7 +661,6 @@ static inline void ath_read_cachesize(struct ath_common *common, int *csz) extern struct ieee80211_ops ath9k_ops; extern int ath9k_modparam_nohwcrypt; extern int led_blink; -extern int ath9k_pm_qos_value; extern bool is_ath9k_unloaded; irqreturn_t ath_isr(int irq, void *dev); |