From: "Fu, Zhonghui" <zhonghui.fu-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
To: "brudley-dY08KVG/lbpWk0Htik3J/w@public.gmane.org"
<brudley-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>,
Arend van Spriel <arend-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>,
Franky Lin <frankyl-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>,
"meuleman-dY08KVG/lbpWk0Htik3J/w@public.gmane.org"
<meuleman-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>,
Kalle Valo <kvalo-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
"pieterpg-dY08KVG/lbpWk0Htik3J/w@public.gmane.org"
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<linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
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<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH v3] brcmfmac: prohibit ACPI power management for brcmfmac driver
Date: Mon, 18 May 2015 14:26:42 +0800 [thread overview]
Message-ID: <55598622.8060307@linux.intel.com> (raw)
In-Reply-To: <555016DC.804-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Hi guys,
Any comments about this patch?
Thanks,
Zhonghui
On 2015/5/11 10:41, Fu, Zhonghui wrote:
> ACPI will manage WiFi chip's power state during suspend/resume
> process on some tablet platforms(such as ASUS T100TA). This is
> not supported by brcmfmac driver now, and the context of WiFi
> chip will be damaged after resume. This patch informs ACPI not
> to manage WiFi chip's power state.
>
> Signed-off-by: Zhonghui Fu <zhonghui.fu-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> Acked-by: Arend van Spriel <arend-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
> ---
> Changes in v3:
> - Have the assignment separate for the if statement.
>
> drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c | 9 +++++++++
> 1 files changed, 9 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
> index 9b508bd..c960a12 100644
> --- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
> +++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
> @@ -33,6 +33,7 @@
> #include <linux/suspend.h>
> #include <linux/errno.h>
> #include <linux/module.h>
> +#include <linux/acpi.h>
> #include <net/cfg80211.h>
>
> #include <defs.h>
> @@ -1114,6 +1115,8 @@ static int brcmf_ops_sdio_probe(struct sdio_func *func,
> int err;
> struct brcmf_sdio_dev *sdiodev;
> struct brcmf_bus *bus_if;
> + struct device *dev;
> + struct acpi_device *adev;
>
> brcmf_dbg(SDIO, "Enter\n");
> brcmf_dbg(SDIO, "Class=%x\n", func->class);
> @@ -1121,6 +1124,12 @@ static int brcmf_ops_sdio_probe(struct sdio_func *func,
> brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
> brcmf_dbg(SDIO, "Function#: %d\n", func->num);
>
> + /* prohibit ACPI power management for this device */
> + dev = &func->dev;
> + adev = ACPI_COMPANION(dev);
> + if (adev)
> + adev->flags.power_manageable = 0;
> +
> /* Consume func num 1 but dont do anything with it. */
> if (func->num == 1)
> return 0;
> -- 1.7.1
>
--
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next prev parent reply other threads:[~2015-05-18 6:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-11 2:41 [PATCH v3] brcmfmac: prohibit ACPI power management for brcmfmac driver Fu, Zhonghui
[not found] ` <555016DC.804-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-05-18 6:26 ` Fu, Zhonghui [this message]
2015-05-20 9:02 ` Arend van Spriel
2015-05-26 3:52 ` Fu, Zhonghui
2015-05-26 10:46 ` Kalle Valo
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