From 8538823f7c692c98e8b7e19cb580faa56e25e89f Mon Sep 17 00:00:00 2001
From: David Woodhouse <dwmw2@infradead.org>
Date: Mon, 17 Dec 2007 15:41:30 -0500
Subject: [PATCH] libertas: discard DEFER responses to commands; let the
timeout trigger
When the firmware returns 0x0004, it wants us to try again later. We can
achieve that simply by throwing out the response and letting the command
timeout code kick in.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/libertas/cmdresp.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/net/wireless/libertas/cmdresp.c b/drivers/net/wireless/libertas/cmdresp.c
index 4d384612afa78..0cd96628293ac 100644
--- a/drivers/net/wireless/libertas/cmdresp.c
+++ b/drivers/net/wireless/libertas/cmdresp.c
@@ -665,6 +665,16 @@ int lbs_process_rx_command(struct lbs_private *priv)
goto done;
}
+ if (resp->result == cpu_to_le16(0x0004)) {
+ /* 0x0004 means -EAGAIN. Drop the response, let it time out
+ and be resubmitted */
+ lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
+ le16_to_cpu(resp->command));
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+ ret = -1;
+ goto done;
+ }
+
/* Now we got response from FW, cancel the command timer */
del_timer(&priv->command_timer);
priv->cmd_timed_out = 0;
--
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