diff options
| -rw-r--r-- | drivers/net/wireless/intersil/orinoco/orinoco_usb.c | 81 |
1 files changed, 69 insertions, 12 deletions
diff --git a/drivers/net/wireless/intersil/orinoco/orinoco_usb.c b/drivers/net/wireless/intersil/orinoco/orinoco_usb.c index 8419e13a79e2..6642948809e1 100644 --- a/drivers/net/wireless/intersil/orinoco/orinoco_usb.c +++ b/drivers/net/wireless/intersil/orinoco/orinoco_usb.c @@ -665,6 +665,7 @@ static void ezusb_request_in_callback(struct ezusb_priv *upriv, } /* switch */ } +typedef void (*ezusb_ctx_wait)(struct ezusb_priv *, struct request_context *); static void ezusb_req_ctx_wait(struct ezusb_priv *upriv, struct request_context *ctx) @@ -692,6 +693,54 @@ static void ezusb_req_ctx_wait(struct ezusb_priv *upriv, } } +static void ezusb_req_ctx_wait_compl(struct ezusb_priv *upriv, + struct request_context *ctx) +{ + switch (ctx->state) { + case EZUSB_CTX_QUEUED: + case EZUSB_CTX_REQ_SUBMITTED: + case EZUSB_CTX_REQ_COMPLETE: + case EZUSB_CTX_RESP_RECEIVED: + wait_for_completion(&ctx->done); + break; + default: + /* Done or failed - nothing to wait for */ + break; + } +} + +static void ezusb_req_ctx_wait_poll(struct ezusb_priv *upriv, + struct request_context *ctx) +{ + int msecs; + + switch (ctx->state) { + case EZUSB_CTX_QUEUED: + case EZUSB_CTX_REQ_SUBMITTED: + case EZUSB_CTX_REQ_COMPLETE: + case EZUSB_CTX_RESP_RECEIVED: + /* If we get called from a timer or with our lock acquired, then + * we can't wait for the completion and have to poll. This won't + * happen if the USB controller completes the URB requests in + * BH. + */ + msecs = DEF_TIMEOUT * (1000 / HZ); + + while (!try_wait_for_completion(&ctx->done) && msecs--) + udelay(1000); + break; + default: + /* Done or failed - nothing to wait for */ + break; + } +} + +static void ezusb_req_ctx_wait_skip(struct ezusb_priv *upriv, + struct request_context *ctx) +{ + WARN(1, "Shouldn't be invoked for in_rid\n"); +} + static inline u16 build_crc(struct ezusb_packet *data) { u16 crc = 0; @@ -853,7 +902,8 @@ static int ezusb_firmware_download(struct ezusb_priv *upriv, static int ezusb_access_ltv(struct ezusb_priv *upriv, struct request_context *ctx, u16 length, const void *data, u16 frame_type, - void *ans_buff, unsigned ans_size, u16 *ans_length) + void *ans_buff, unsigned ans_size, u16 *ans_length, + ezusb_ctx_wait ezusb_ctx_wait_func) { int req_size; int retval = 0; @@ -883,7 +933,7 @@ static int ezusb_access_ltv(struct ezusb_priv *upriv, spin_unlock_bh(&upriv->reply_count_lock); if (ctx->in_rid) - ezusb_req_ctx_wait(upriv, ctx); + ezusb_ctx_wait_func(upriv, ctx); state = ctx->state; switch (state) { @@ -971,7 +1021,7 @@ static int ezusb_write_ltv(struct hermes *hw, int bap, u16 rid, frame_type = EZUSB_FRAME_CONTROL; return ezusb_access_ltv(upriv, ctx, length, data, frame_type, - NULL, 0, NULL); + NULL, 0, NULL, ezusb_req_ctx_wait); } static int ezusb_read_ltv(struct hermes *hw, int bap, u16 rid, @@ -988,7 +1038,7 @@ static int ezusb_read_ltv(struct hermes *hw, int bap, u16 rid, return -ENOMEM; return ezusb_access_ltv(upriv, ctx, 0, NULL, EZUSB_FRAME_CONTROL, - buf, bufsize, length); + buf, bufsize, length, ezusb_req_ctx_wait); } static int ezusb_doicmd_wait(struct hermes *hw, u16 cmd, u16 parm0, u16 parm1, @@ -1011,7 +1061,8 @@ static int ezusb_doicmd_wait(struct hermes *hw, u16 cmd, u16 parm0, u16 parm1, return -ENOMEM; return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, - EZUSB_FRAME_CONTROL, NULL, 0, NULL); + EZUSB_FRAME_CONTROL, NULL, 0, NULL, + ezusb_req_ctx_wait); } static int ezusb_docmd_wait(struct hermes *hw, u16 cmd, u16 parm0, @@ -1032,7 +1083,8 @@ static int ezusb_docmd_wait(struct hermes *hw, u16 cmd, u16 parm0, return -ENOMEM; return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, - EZUSB_FRAME_CONTROL, NULL, 0, NULL); + EZUSB_FRAME_CONTROL, NULL, 0, NULL, + ezusb_req_ctx_wait); } static int ezusb_bap_pread(struct hermes *hw, int bap, @@ -1090,7 +1142,7 @@ static int ezusb_read_pda(struct hermes *hw, __le16 *pda, return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, EZUSB_FRAME_CONTROL, &pda[2], pda_len - 4, - NULL); + NULL, ezusb_req_ctx_wait); } static int ezusb_program_init(struct hermes *hw, u32 entry_point) @@ -1104,7 +1156,8 @@ static int ezusb_program_init(struct hermes *hw, u32 entry_point) return -ENOMEM; return ezusb_access_ltv(upriv, ctx, sizeof(data), &data, - EZUSB_FRAME_CONTROL, NULL, 0, NULL); + EZUSB_FRAME_CONTROL, NULL, 0, NULL, + ezusb_req_ctx_wait); } static int ezusb_program_end(struct hermes *hw) @@ -1117,7 +1170,8 @@ static int ezusb_program_end(struct hermes *hw) return -ENOMEM; return ezusb_access_ltv(upriv, ctx, 0, NULL, - EZUSB_FRAME_CONTROL, NULL, 0, NULL); + EZUSB_FRAME_CONTROL, NULL, 0, NULL, + ezusb_req_ctx_wait); } static int ezusb_program_bytes(struct hermes *hw, const char *buf, @@ -1133,7 +1187,8 @@ static int ezusb_program_bytes(struct hermes *hw, const char *buf, return -ENOMEM; err = ezusb_access_ltv(upriv, ctx, sizeof(data), &data, - EZUSB_FRAME_CONTROL, NULL, 0, NULL); + EZUSB_FRAME_CONTROL, NULL, 0, NULL, + ezusb_req_ctx_wait); if (err) return err; @@ -1142,7 +1197,8 @@ static int ezusb_program_bytes(struct hermes *hw, const char *buf, return -ENOMEM; return ezusb_access_ltv(upriv, ctx, len, buf, - EZUSB_FRAME_CONTROL, NULL, 0, NULL); + EZUSB_FRAME_CONTROL, NULL, 0, NULL, + ezusb_req_ctx_wait); } static int ezusb_program(struct hermes *hw, const char *buf, @@ -1262,7 +1318,8 @@ static netdev_tx_t ezusb_xmit(struct sk_buff *skb, struct net_device *dev) tx_size = ALIGN(buf - ctx->buf->data, 2); err = ezusb_access_ltv(upriv, ctx, tx_size, NULL, - EZUSB_FRAME_DATA, NULL, 0, NULL); + EZUSB_FRAME_DATA, NULL, 0, NULL, + ezusb_req_ctx_wait); if (err) { netif_start_queue(dev); |