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| author | Bing Zhao <bzhao@marvell.com> | 2014-03-28 14:54:39 -0700 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2014-03-28 19:37:06 -0700 |
| commit | 0d3674084c89130bcaf15b1a69881b31f198ee72 (patch) | |
| tree | ea7e78cb189e6df4d2ea6279a18a860f3976ae95 /drivers/bluetooth/btmrvl_main.c | |
| parent | 3d5a76f08bbac55305da87f4c810279189f64297 (diff) | |
| download | linux-0d3674084c89130bcaf15b1a69881b31f198ee72.tar.gz linux-0d3674084c89130bcaf15b1a69881b31f198ee72.tar.bz2 linux-0d3674084c89130bcaf15b1a69881b31f198ee72.zip | |
Bluetooth: btmrvl: implement read-to-clear for SD8897 interrupts
For SD8897, CMD52 write_to_clear may have missing interrupts
under certain corner case condition. Use CMD53 read-to-clear
to fix the problem.
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth/btmrvl_main.c')
| -rw-r--r-- | drivers/bluetooth/btmrvl_main.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c index 2c4997ce2484..5c0b9444b5e1 100644 --- a/drivers/bluetooth/btmrvl_main.c +++ b/drivers/bluetooth/btmrvl_main.c @@ -24,6 +24,7 @@ #include <net/bluetooth/hci_core.h> #include "btmrvl_drv.h" +#include "btmrvl_sdio.h" #define VERSION "1.0" @@ -337,10 +338,25 @@ static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb) static void btmrvl_init_adapter(struct btmrvl_private *priv) { + int buf_size; + skb_queue_head_init(&priv->adapter->tx_queue); priv->adapter->ps_state = PS_AWAKE; + buf_size = ALIGN_SZ(SDIO_BLOCK_SIZE, BTSDIO_DMA_ALIGN); + priv->adapter->hw_regs_buf = kzalloc(buf_size, GFP_KERNEL); + if (!priv->adapter->hw_regs_buf) { + priv->adapter->hw_regs = NULL; + BT_ERR("Unable to allocate buffer for hw_regs."); + } else { + priv->adapter->hw_regs = + (u8 *)ALIGN_ADDR(priv->adapter->hw_regs_buf, + BTSDIO_DMA_ALIGN); + BT_DBG("hw_regs_buf=%p hw_regs=%p", + priv->adapter->hw_regs_buf, priv->adapter->hw_regs); + } + init_waitqueue_head(&priv->adapter->cmd_wait_q); } @@ -348,6 +364,7 @@ static void btmrvl_free_adapter(struct btmrvl_private *priv) { skb_queue_purge(&priv->adapter->tx_queue); + kfree(priv->adapter->hw_regs_buf); kfree(priv->adapter); priv->adapter = NULL; |