From: Dmitry Shmidt <dimitrysh@google.com>
Date: Wed, 2 May 2012 21:25:59 +0000 (-0700)
Subject: net: wireless: bcmdhd: Set MMC_PM_KEEP_POWER flag on suspend
X-Git-Tag: firefly_0821_release~7613^2~115
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b7f01a5788d4c188b25b05fc5756f97acbfec673;p=firefly-linux-kernel-4.4.55.git

net: wireless: bcmdhd: Set MMC_PM_KEEP_POWER flag on suspend

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
---

diff --git a/drivers/net/wireless/bcmdhd/bcmsdh_sdmmc_linux.c b/drivers/net/wireless/bcmdhd/bcmsdh_sdmmc_linux.c
index 602523df72c9..a78faebe2e7a 100644
--- a/drivers/net/wireless/bcmdhd/bcmsdh_sdmmc_linux.c
+++ b/drivers/net/wireless/bcmdhd/bcmsdh_sdmmc_linux.c
@@ -178,6 +178,8 @@ MODULE_DEVICE_TABLE(sdio, bcmsdh_sdmmc_ids);
 static int bcmsdh_sdmmc_suspend(struct device *pdev)
 {
 	struct sdio_func *func = dev_to_sdio_func(pdev);
+	mmc_pm_flag_t sdio_flags;
+	int ret;
 
 	if (func->num != 2)
 		return 0;
@@ -186,6 +188,21 @@ static int bcmsdh_sdmmc_suspend(struct device *pdev)
 
 	if (dhd_os_check_wakelock(bcmsdh_get_drvdata()))
 		return -EBUSY;
+
+	sdio_flags = sdio_get_host_pm_caps(func);
+
+	if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
+		sd_err(("%s: can't keep power while host is suspended\n", __FUNCTION__));
+		return  -EINVAL;
+	}
+
+	/* keep power while host suspended */
+	ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
+	if (ret) {
+		sd_err(("%s: error while trying to keep power\n", __FUNCTION__));
+		return ret;
+	}
+
 #if defined(OOB_INTR_ONLY)
 	bcmsdh_oob_intr_set(0);
 #endif	/* defined(OOB_INTR_ONLY) */