netdev - [net-next,v2] [PATCH net-next v2] net: wwan: t7xx: Change PM_AUTOSUSPEND

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20241114102002.481081-1-wojackbb@gmail.com>
Date: Thu, 14 Nov 2024 18:20:02 +0800
From: wojackbb@...il.com
To: netdev@...r.kernel.org
Cc: chandrashekar.devegowda@...el.com,
	chiranjeevi.rapolu@...ux.intel.com,
	haijun.liu@...iatek.com,
	m.chetan.kumar@...ux.intel.com,
	ricardo.martinez@...ux.intel.com,
	loic.poulain@...aro.org,
	ryazanov.s.a@...il.com,
	johannes@...solutions.net,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	linux-arm-kernel@...ts.infradead.org,
	angelogioacchino.delregno@...labora.com,
	linux-mediatek@...ts.infradead.org,
	matthias.bgg@...il.com,
	Jack Wu <wojackbb@...il.com>
Subject: [net-next,v2] [PATCH net-next v2] net: wwan: t7xx: Change PM_AUTOSUSPEND_MS to 5000

From: Jack Wu <wojackbb@...il.com>

Because optimizing the power consumption of t7XX,
change auto suspend time to 5000.

The Tests uses a script to loop through the power_state
of t7XX.
(for example: /sys/bus/pci/devices/0000\:72\:00.0/power_state)

* If Auto suspend is 20 seconds,
  test script show power_state have 0~5% of the time was in D3 state
  when host don't have data packet transmission.

* Changed auto suspend time to 5 seconds,
  test script show power_state have 50%~80% of the time was in D3 state
  when host don't have data packet transmission.

We tested Fibocom FM350 and our products using the t7xx and they all
benefited from this.

Signed-off-by: Jack Wu <wojackbb@...il.com>
---
V2:
 * supplementary commit information
---
---
 drivers/net/wwan/t7xx/t7xx_pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wwan/t7xx/t7xx_pci.c b/drivers/net/wwan/t7xx/t7xx_pci.c
index e556e5bd49ab..dcadd615a025 100644
--- a/drivers/net/wwan/t7xx/t7xx_pci.c
+++ b/drivers/net/wwan/t7xx/t7xx_pci.c
@@ -48,7 +48,7 @@
 #define T7XX_INIT_TIMEOUT		20
 #define PM_SLEEP_DIS_TIMEOUT_MS		20
 #define PM_ACK_TIMEOUT_MS		1500
-#define PM_AUTOSUSPEND_MS		20000
+#define PM_AUTOSUSPEND_MS		5000
 #define PM_RESOURCE_POLL_TIMEOUT_US	10000
 #define PM_RESOURCE_POLL_STEP_US	100
 
-- 
2.34.1