From: Eliad Peller <eliad@wizery.com>
Date: Thu, 26 Jan 2012 12:12:31 +0000 (+0200)
Subject: Revert "wl12xx: Change claiming of the SDIO bus"
X-Git-Tag: v3.12-rc1~3664^2~108^2~351^2~32
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b4748306368a61b64b97b16f11cb6a82eebb60f9;p=kernel%2Fkernel-generic.git

Revert "wl12xx: Change claiming of the SDIO bus"

This reverts commit 393fb560d328cc06e6a5c7b7473901ad724f82e7.

Commit b6ad726 ("mmc: core: Prevent too long response times
for suspend") fails the suspend if the mmc host can't be
claimed before suspend. As the host is claimed by us as long
as the chip is powered on, suspend will always fail.

Revert to claiming the sdio bus only when needed.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
---

diff --git a/drivers/net/wireless/wl12xx/sdio.c b/drivers/net/wireless/wl12xx/sdio.c
index 468a505..099c2c9 100644
--- a/drivers/net/wireless/wl12xx/sdio.c
+++ b/drivers/net/wireless/wl12xx/sdio.c
@@ -74,6 +74,8 @@ static void wl12xx_sdio_raw_read(struct device *child, int addr, void *buf,
 	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
 	struct sdio_func *func = dev_to_sdio_func(glue->dev);
 
+	sdio_claim_host(func);
+
 	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
 		((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
 		dev_dbg(child->parent, "sdio read 52 addr 0x%x, byte 0x%02x\n",
@@ -88,6 +90,8 @@ static void wl12xx_sdio_raw_read(struct device *child, int addr, void *buf,
 			addr, len);
 	}
 
+	sdio_release_host(func);
+
 	if (ret)
 		dev_err(child->parent, "sdio read failed (%d)\n", ret);
 }
@@ -99,6 +103,8 @@ static void wl12xx_sdio_raw_write(struct device *child, int addr, void *buf,
 	struct wl12xx_sdio_glue *glue = dev_get_drvdata(child->parent);
 	struct sdio_func *func = dev_to_sdio_func(glue->dev);
 
+	sdio_claim_host(func);
+
 	if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG_ADDR)) {
 		sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
 		dev_dbg(child->parent, "sdio write 52 addr 0x%x, byte 0x%02x\n",
@@ -113,6 +119,8 @@ static void wl12xx_sdio_raw_write(struct device *child, int addr, void *buf,
 			ret = sdio_memcpy_toio(func, addr, buf, len);
 	}
 
+	sdio_release_host(func);
+
 	if (ret)
 		dev_err(child->parent, "sdio write failed (%d)\n", ret);
 }
@@ -136,6 +144,7 @@ static int wl12xx_sdio_power_on(struct wl12xx_sdio_glue *glue)
 
 	sdio_claim_host(func);
 	sdio_enable_func(func);
+	sdio_release_host(func);
 
 out:
 	return ret;
@@ -146,6 +155,7 @@ static int wl12xx_sdio_power_off(struct wl12xx_sdio_glue *glue)
 	int ret;
 	struct sdio_func *func = dev_to_sdio_func(glue->dev);
 
+	sdio_claim_host(func);
 	sdio_disable_func(func);
 	sdio_release_host(func);