rt2x00: Wait up to one second on rt2800 for WPDMA to be ready

At least some devices need such a long time to inititalize WPDMA. This
only increases the maximum wait time and shouldn't affect devices that
have been working before.

Reported-by: Joshua Smith <jesmith@kaon.com>
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index b1738bbf87ff..dcd3a8981ca2 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -277,13 +277,17 @@ int rt2800_wait_wpdma_ready(struct rt2x00_dev *rt2x00dev)
         unsigned int i;
         u32 reg;
 
+        /*
+         * Some devices are really slow to respond here. Wait a whole second
+         * before timing out.
+         */
         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);
+                msleep(10);
         }
 
         ERROR(rt2x00dev, "WPDMA TX/RX busy, aborting.\n");