1 files changed, 12 insertions, 6 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index 9de9dbe94399..d63b582b6875 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -27,6 +27,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <linux/log2.h>
 
 #include "rt2x00.h"
 #include "rt2x00lib.h"
@@ -811,13 +812,18 @@ static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev)
          */
         if (test_bit(DRIVER_REQUIRE_TXSTATUS_FIFO, &rt2x00dev->flags)) {
                 /*
-                 * Allocate txstatus fifo and tasklet, we use a size of 512
-                 * for the kfifo which is big enough to store 512/4=128 tx
-                 * status reports. In the worst case (tx status for all tx
-                 * queues gets reported before we've got a chance to handle
-                 * them) 24*4=384 tx status reports need to be cached.
+                 * Allocate the txstatus fifo. In the worst case the tx
+                 * status fifo has to hold the tx status of all entries
+                 * in all tx queues. Hence, calculate the kfifo size as
+                 * tx_queues * entry_num and round up to the nearest
+                 * power of 2.
                  */
-                status = kfifo_alloc(&rt2x00dev->txstatus_fifo, 512,
+                int kfifo_size =
+                        roundup_pow_of_two(rt2x00dev->ops->tx_queues *
+                                           rt2x00dev->ops->tx->entry_num *
+                                           sizeof(u32));
+
+                status = kfifo_alloc(&rt2x00dev->txstatus_fifo, kfifo_size,
                                      GFP_KERNEL);
                 if (status)
                         return status;