wlcore: don't set SDIO_FAILED flag when driver state is off

If some IO read/write fails while the FW is not loaded, a recovery
will not take place. This means the SDIO_FAILED flag will stay in place
forever and prevent further read/writes.

This can happen if a check for STATE_OFF was forgotten in some routine.

Take this opportunity to rename the flag to IO_FAILED, since we support
other buses as well.
Reported-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>

drivers/net/wireless/ti/wlcore/io.h

@@ -60,12 +60,12 @@ static inline int __must_check wlcore_raw_write(struct wl1271 *wl, int addr,
 {
 	int ret;
 
-	if (test_bit(WL1271_FLAG_SDIO_FAILED, &wl->flags))
+	if (test_bit(WL1271_FLAG_IO_FAILED, &wl->flags))
 		return -EIO;
 
 	ret = wl->if_ops->write(wl->dev, addr, buf, len, fixed);
-	if (ret)
-		set_bit(WL1271_FLAG_SDIO_FAILED, &wl->flags);
+	if (ret && wl->state != WL1271_STATE_OFF)
+		set_bit(WL1271_FLAG_IO_FAILED, &wl->flags);
 
 	return ret;
 }
@@ -76,12 +76,12 @@ static inline int __must_check wlcore_raw_read(struct wl1271 *wl, int addr,
 {
 	int ret;
 
-	if (test_bit(WL1271_FLAG_SDIO_FAILED, &wl->flags))
+	if (test_bit(WL1271_FLAG_IO_FAILED, &wl->flags))
 		return -EIO;
 
 	ret = wl->if_ops->read(wl->dev, addr, buf, len, fixed);
-	if (ret)
-		set_bit(WL1271_FLAG_SDIO_FAILED, &wl->flags);
+	if (ret && wl->state != WL1271_STATE_OFF)
+		set_bit(WL1271_FLAG_IO_FAILED, &wl->flags);
 
 	return ret;
 }

drivers/net/wireless/ti/wlcore/wlcore_i.h

@@ -238,7 +238,7 @@ enum wl12xx_flags {
 	WL1271_FLAG_RECOVERY_IN_PROGRESS,
 	WL1271_FLAG_VIF_CHANGE_IN_PROGRESS,
 	WL1271_FLAG_INTENDED_FW_RECOVERY,
-	WL1271_FLAG_SDIO_FAILED,
+	WL1271_FLAG_IO_FAILED,
 };
 
 enum wl12xx_vif_flags {