1 files changed, 36 insertions, 63 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_cmd.c b/drivers/net/wireless/wl12xx/wl1271_cmd.c
index 0666328ce9a..990eb01b4c7 100644
--- a/drivers/net/wireless/wl12xx/wl1271_cmd.c
+++ b/drivers/net/wireless/wl12xx/wl1271_cmd.c
@@ -42,12 +42,14 @@
  * @buf: buffer containing the command, must work with dma
  * @len: length of the buffer
  */
-int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len)
+int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len,
+		    size_t res_len)
 {
 	struct wl1271_cmd_header *cmd;
 	unsigned long timeout;
 	u32 intr;
 	int ret = 0;
+	u16 status;
 
 	cmd = buf;
 	cmd->id = cpu_to_le16(id);
@@ -74,6 +76,17 @@ int wl1271_cmd_send(struct wl1271 *wl, u16 id, void *buf, size_t len)
 		intr = wl1271_spi_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
 	}
 
+	/* read back the status code of the command */
+	if (res_len == 0)
+		res_len = sizeof(struct wl1271_cmd_header);
+	wl1271_spi_read(wl, wl->cmd_box_addr, cmd, res_len, false);
+
+	status = le16_to_cpu(cmd->status);
+	if (status != CMD_STATUS_SUCCESS) {
+		wl1271_error("command execute failure %d", status);
+		ret = -EIO;
+	}
+
 	wl1271_spi_write32(wl, ACX_REG_INTERRUPT_ACK,
 			   WL1271_ACX_INTR_CMD_COMPLETE);
 
@@ -262,7 +275,7 @@ int wl1271_cmd_join(struct wl1271 *wl)
 	wl->tx_security_seq_16 = 0;
 	wl->tx_security_seq_32 = 0;
 
-	ret = wl1271_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join));
+	ret = wl1271_cmd_send(wl, CMD_START_JOIN, join, sizeof(*join), 0);
 	if (ret < 0) {
 		wl1271_error("failed to initiate cmd join");
 		goto out_free;
@@ -294,35 +307,21 @@ out:
 int wl1271_cmd_test(struct wl1271 *wl, void *buf, size_t buf_len, u8 answer)
 {
 	int ret;
+	size_t res_len = 0;
 
 	wl1271_debug(DEBUG_CMD, "cmd test");
 
-	ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len);
+	if (answer)
+		res_len = buf_len;
+
+	ret = wl1271_cmd_send(wl, CMD_TEST, buf, buf_len, res_len);
 
 	if (ret < 0) {
 		wl1271_warning("TEST command failed");
 		return ret;
 	}
 
-	if (answer) {
-		struct wl1271_command *cmd_answer;
-		u16 status;
-
-		/*
-		 * The test command got in, we can read the answer.
-		 * The answer would be a wl1271_command, where the
-		 * parameter array contains the actual answer.
-		 */
-		wl1271_spi_read(wl, wl->cmd_box_addr, buf, buf_len, false);
-
-		cmd_answer = buf;
-		status = le16_to_cpu(cmd_answer->header.status);
-
-		if (status != CMD_STATUS_SUCCESS)
-			wl1271_error("TEST command answer error: %d", status);
-	}
-
-	return 0;
+	return ret;
 }
 
 /**
@@ -345,21 +344,10 @@ int wl1271_cmd_interrogate(struct wl1271 *wl, u16 id, void *buf, size_t len)
 	/* payload length, does not include any headers */
 	acx->len = cpu_to_le16(len - sizeof(*acx));
 
-	ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx));
-	if (ret < 0) {
+	ret = wl1271_cmd_send(wl, CMD_INTERROGATE, acx, sizeof(*acx), len);
+	if (ret < 0)
 		wl1271_error("INTERROGATE command failed");
-		goto out;
-	}
 
-	/* the interrogate command got in, we can read the answer */
-	wl1271_spi_read(wl, wl->cmd_box_addr, buf, len, false);
-
-	acx = buf;
-	if (le16_to_cpu(acx->cmd.status) != CMD_STATUS_SUCCESS)
-		wl1271_error("INTERROGATE command error: %d",
-			     le16_to_cpu(acx->cmd.status));
-
-out:
 	return ret;
 }
 
@@ -383,7 +371,7 @@ int wl1271_cmd_configure(struct wl1271 *wl, u16 id, void *buf, size_t len)
 	/* payload length, does not include any headers */
 	acx->len = cpu_to_le16(len - sizeof(*acx));
 
-	ret = wl1271_cmd_send(wl, CMD_CONFIGURE, acx, len);
+	ret = wl1271_cmd_send(wl, CMD_CONFIGURE, acx, len, 0);
 	if (ret < 0) {
 		wl1271_warning("CONFIGURE command NOK");
 		return ret;
@@ -416,7 +404,7 @@ int wl1271_cmd_data_path(struct wl1271 *wl, u8 channel, bool enable)
 		cmd_tx = CMD_DISABLE_TX;
 	}
 
-	ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd));
+	ret = wl1271_cmd_send(wl, cmd_rx, cmd, sizeof(*cmd), 0);
 	if (ret < 0) {
 		wl1271_error("rx %s cmd for channel %d failed",
 			     enable ? "start" : "stop", channel);
@@ -426,7 +414,7 @@ int wl1271_cmd_data_path(struct wl1271 *wl, u8 channel, bool enable)
 	wl1271_debug(DEBUG_BOOT, "rx %s cmd channel %d",
 		     enable ? "start" : "stop", channel);
 
-	ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd));
+	ret = wl1271_cmd_send(wl, cmd_tx, cmd, sizeof(*cmd), 0);
 	if (ret < 0) {
 		wl1271_error("tx %s cmd for channel %d failed",
 			     enable ? "start" : "stop", channel);
@@ -468,7 +456,7 @@ int wl1271_cmd_ps_mode(struct wl1271 *wl, u8 ps_mode)
 	ps_params->null_data_rate = cpu_to_le32(1); /* 1 Mbps */
 
 	ret = wl1271_cmd_send(wl, CMD_SET_PS_MODE, ps_params,
-			      sizeof(*ps_params));
+			      sizeof(*ps_params), 0);
 	if (ret < 0) {
 		wl1271_error("cmd set_ps_mode failed");
 		goto out;
@@ -499,19 +487,14 @@ int wl1271_cmd_read_memory(struct wl1271 *wl, u32 addr, void *answer,
 	cmd->addr = cpu_to_le32(addr);
 	cmd->size = cpu_to_le32(len);
 
-	ret = wl1271_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd));
+	ret = wl1271_cmd_send(wl, CMD_READ_MEMORY, cmd, sizeof(*cmd),
+			      sizeof(*cmd));
 	if (ret < 0) {
 		wl1271_error("read memory command failed: %d", ret);
 		goto out;
 	}
 
-	/* the read command got in, we can now read the answer */
-	wl1271_spi_read(wl, wl->cmd_box_addr, cmd, sizeof(*cmd), false);
-
-	if (le16_to_cpu(cmd->header.status) != CMD_STATUS_SUCCESS)
-		wl1271_error("error in read command result: %d",
-			     le16_to_cpu(cmd->header.status));
-
+	/* the read command got in */
 	memcpy(answer, cmd->value, len);
 
 out:
@@ -613,7 +596,7 @@ int wl1271_cmd_scan(struct wl1271 *wl, u8 *ssid, size_t len,
 	trigger->timeout = 0;
 
 	ret = wl1271_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
-			      sizeof(*trigger));
+			      sizeof(*trigger), 0);
 	if (ret < 0) {
 		wl1271_error("trigger scan to failed for hw scan");
 		goto out;
@@ -636,20 +619,10 @@ int wl1271_cmd_scan(struct wl1271 *wl, u8 *ssid, size_t len,
 		}
 	}
 
-	ret = wl1271_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
+	ret = wl1271_cmd_send(wl, CMD_SCAN, params, sizeof(*params), 0);
 	if (ret < 0) {
 		wl1271_error("SCAN failed");
-		goto out;
-	}
-
-	wl1271_spi_read(wl, wl->cmd_box_addr, params, sizeof(*params),
-			false);
-
-	if (le16_to_cpu(params->header.status) != CMD_STATUS_SUCCESS) {
-		wl1271_error("Scan command error: %d",
-			     le16_to_cpu(params->header.status));
 		wl->scanning = false;
-		ret = -EIO;
 		goto out;
 	}
 
@@ -684,7 +657,7 @@ int wl1271_cmd_template_set(struct wl1271 *wl, u16 template_id,
 	if (buf)
 		memcpy(cmd->template_data, buf, buf_len);
 
-	ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd));
+	ret = wl1271_cmd_send(wl, CMD_SET_TEMPLATE, cmd, sizeof(*cmd), 0);
 	if (ret < 0) {
 		wl1271_warning("cmd set_template failed: %d", ret);
 		goto out_free;
@@ -863,7 +836,7 @@ int wl1271_cmd_set_default_wep_key(struct wl1271 *wl, u8 id)
 	cmd->key_action = cpu_to_le16(KEY_SET_ID);
 	cmd->key_type = KEY_WEP;
 
-	ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd));
+	ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
 	if (ret < 0) {
 		wl1271_warning("cmd set_default_wep_key failed: %d", ret);
 		goto out;
@@ -920,7 +893,7 @@ int wl1271_cmd_set_key(struct wl1271 *wl, u16 action, u8 id, u8 key_type,
 
 	wl1271_dump(DEBUG_CRYPT, "TARGET KEY: ", cmd, sizeof(*cmd));
 
-	ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd));
+	ret = wl1271_cmd_send(wl, CMD_SET_KEYS, cmd, sizeof(*cmd), 0);
 	if (ret < 0) {
 		wl1271_warning("could not set keys");
 		goto out;
@@ -950,7 +923,7 @@ int wl1271_cmd_disconnect(struct wl1271 *wl)
 	/* disconnect reason is not used in immediate disconnections */
 	cmd->type = DISCONNECT_IMMEDIATE;
 
-	ret = wl1271_cmd_send(wl, CMD_DISCONNECT, cmd, sizeof(*cmd));
+	ret = wl1271_cmd_send(wl, CMD_DISCONNECT, cmd, sizeof(*cmd), 0);
 	if (ret < 0) {
 		wl1271_error("failed to send disconnect command");
 		goto out_free;