commit 67a4c1e24d58e0d88ed88539641631f6fc8a0cfd
author Gertjan van Wingerde <gwingerde@gmail.com> Wed Dec 30 11:36:32 2009 +0100
committer John W. Linville <linville@tuxdriver.com> Tue Jan 12 13:51:23 2010 -0500
tree 0e1a80327b450fb73bbb73d43566575ccdec98fb
parent 6c0fe26581406bff3d15fd6051453e80cfe70fd6

rt2x00: Unify rt2800 WPDMA ready waiting functions.

The rt2800pci_wait_wpdma_ready and rt2800usb_wait_wpdma_ready functions are
exactly the same, so unify them into rt200lib.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2800lib.c

diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index d300ff8..ca700a4 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -245,6 +245,25 @@
 }
 EXPORT_SYMBOL_GPL(rt2800_mcu_request);
 
+int rt2800_wait_wpdma_ready(struct rt2x00_dev *rt2x00dev)
+{
+	unsigned int i;
+	u32 reg;
+
+	for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
+		rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
+		if (!rt2x00_get_field32(reg, WPDMA_GLO_CFG_TX_DMA_BUSY) &&
+		    !rt2x00_get_field32(reg, WPDMA_GLO_CFG_RX_DMA_BUSY))
+			return 0;
+
+		msleep(1);
+	}
+
+	ERROR(rt2x00dev, "WPDMA TX/RX busy, aborting.\n");
+	return -EACCES;
+}
+EXPORT_SYMBOL_GPL(rt2800_wait_wpdma_ready);
+
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 const struct rt2x00debug rt2800_rt2x00debug = {
 	.owner	= THIS_MODULE,