2015-01-12 06:41:19

by Fu, Zhonghui

Subject: [PATCH] brcmfmac: avoid duplicated suspend/resume operation

>From 8685c3c2746b4275fc808d9db23c364b2f54b52a Mon Sep 17 00:00:00 2001
From: Zhonghui Fu <[email protected]>
Date: Mon, 12 Jan 2015 14:25:46 +0800
Subject: [PATCH] brcmfmac: avoid duplicated suspend/resume operation

WiFi chip has 2 SDIO functions, and PM core will trigger
twice suspend/resume operations for one WiFi chip to do
the same things. This patch avoid this case.

Acked-by: Arend van Spriel<[email protected]>
Acked-by: Sergei Shtylyov<[email protected]>
Signed-off-by: Zhonghui Fu <[email protected]>
---
drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c | 21 +++++++++++++++++----
1 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
index 9880dae..8f71485 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
@@ -1070,7 +1070,7 @@ static int brcmf_ops_sdio_probe(struct sdio_func *func,
*/
if ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_KEEP_POWER) &&
((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_WAKE_SDIO_IRQ) ||
- (sdiodev->pdata && sdiodev->pdata->oob_irq_supported)))
+ (sdiodev->pdata->oob_irq_supported)))
bus_if->wowl_supported = true;
#endif

@@ -1139,11 +1139,17 @@ void brcmf_sdio_wowl_config(struct device *dev, bool enabled)
static int brcmf_ops_sdio_suspend(struct device *dev)
{
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
+ struct brcmf_sdio_dev *sdiodev;
mmc_pm_flag_t sdio_flags;
+ struct sdio_func *func = dev_to_sdio_func(dev);

brcmf_dbg(SDIO, "Enter\n");

+ if (func->num == 2)
+ return 0;
+
+ sdiodev = bus_if->bus_priv.sdio;
+
atomic_set(&sdiodev->suspend, true);

if (sdiodev->wowl_enabled) {
@@ -1164,10 +1170,17 @@ static int brcmf_ops_sdio_suspend(struct device *dev)
static int brcmf_ops_sdio_resume(struct device *dev)
{
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
- struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
+ struct brcmf_sdio_dev *sdiodev;
+ struct sdio_func *func = dev_to_sdio_func(dev);

brcmf_dbg(SDIO, "Enter\n");
- if (sdiodev->pdata && sdiodev->pdata->oob_irq_supported)
+
+ if (func->num == 2)
+ return 0;
+
+ sdiodev = bus_if->bus_priv.sdio;
+
+ if (sdiodev->pdata->oob_irq_supported)
disable_irq_wake(sdiodev->pdata->oob_irq_nr);
brcmf_sdio_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
atomic_set(&sdiodev->suspend, false);
-- 1.7.1

2015-01-12 14:06:56

by Sergei Shtylyov

Subject: Re: [PATCH] brcmfmac: avoid duplicated suspend/resume operation

Hello.

On 1/12/2015 9:41 AM, Fu, Zhonghui wrote:

> From 8685c3c2746b4275fc808d9db23c364b2f54b52a Mon Sep 17 00:00:00 2001
> From: Zhonghui Fu <[email protected]>
> Date: Mon, 12 Jan 2015 14:25:46 +0800
> Subject: [PATCH] brcmfmac: avoid duplicated suspend/resume operation

The lines above are not needed.

> WiFi chip has 2 SDIO functions, and PM core will trigger
> twice suspend/resume operations for one WiFi chip to do
> the same things. This patch avoid this case.

> Acked-by: Arend van Spriel<[email protected]>
> Acked-by: Sergei Shtylyov<[email protected]>
> Signed-off-by: Zhonghui Fu <[email protected]>
> ---
> drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c | 21 +++++++++++++++++----
> 1 files changed, 17 insertions(+), 4 deletions(-)

> diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
> index 9880dae..8f71485 100644
> --- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
> +++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
> @@ -1070,7 +1070,7 @@ static int brcmf_ops_sdio_probe(struct sdio_func *func,
> */
> if ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_KEEP_POWER) &&
> ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_WAKE_SDIO_IRQ) ||
> - (sdiodev->pdata && sdiodev->pdata->oob_irq_supported)))
> + (sdiodev->pdata->oob_irq_supported)))

Inner parens not needed on this line.

[...]

WBR, Sergei