From 039bdb1494d1d514987ce596a4898494021c7af2 Mon Sep 17 00:00:00 2001 From: Eliad Peller Date: Fri, 13 May 2011 11:57:10 +0300 Subject: [PATCH] wl12xx_sdio: set MMC_PM_KEEP_POWER flag on suspend if a wow trigger was configured, set the MMC_PM_KEEP_POWER flag on suspend, so our power will be kept while the system is suspended. We needed to set this flag on each suspend attempt (when we want to keep power) Signed-off-by: Eliad Peller Signed-off-by: Luciano Coelho --- drivers/net/wireless/wl12xx/sdio.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/wl12xx/sdio.c b/drivers/net/wireless/wl12xx/sdio.c index 1298461c45d1..5b03fd5ee33f 100644 --- a/drivers/net/wireless/wl12xx/sdio.c +++ b/drivers/net/wireless/wl12xx/sdio.c @@ -314,7 +314,34 @@ static int wl1271_suspend(struct device *dev) { /* Tell MMC/SDIO core it's OK to power down the card * (if it isn't already), but not to remove it completely */ - return 0; + struct sdio_func *func = dev_to_sdio_func(dev); + struct wl1271 *wl = sdio_get_drvdata(func); + mmc_pm_flag_t sdio_flags; + int ret = 0; + + wl1271_debug(DEBUG_MAC80211, "wl1271 suspend. wow_enabled: %d", + wl->wow_enabled); + + /* check whether sdio should keep power */ + if (wl->wow_enabled) { + sdio_flags = sdio_get_host_pm_caps(func); + + if (!(sdio_flags & MMC_PM_KEEP_POWER)) { + wl1271_error("can't keep power while host " + "is suspended"); + ret = -EINVAL; + goto out; + } + + /* keep power while host suspended */ + ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); + if (ret) { + wl1271_error("error while trying to keep power"); + goto out; + } + } +out: + return ret; } static int wl1271_resume(struct device *dev) -- 2.39.5