Thread (9 messages) 9 messages, 4 authors, 2013-02-26

Re: [PATCH] libertas sdio: remove CMD_FUNC_INIT call

From: John W. Linville <hidden>
Date: 2013-01-30 19:30:45
Also in: linux-wireless, lkml

On Fri, Jan 18, 2013 at 12:28:17PM -0800, Bing Zhao wrote:
Hi Lubomir,
quoted
It actually times out on a 8688 present in GuruPlug with sd8688.bin
(md5=7233401e9687f8c880da547beed4324e) firmware (that's present in
linux-firmware tree), but the adapter works fine.

For that firmware times out with libertas_uap [1] as well, though it succeeds
with sd8688_ap.bin (md5=52cd8f8296b9a7e1d3835d57416256b2) that was originally
shipped with GuruPlug. That firmware is not in linux-firmware tree and btmrvl
driver might win the race programming the 8688 with sd8688.bin anyway.

[1] https://github.com/lkundrak/linux/tree/libertas_uap
---
 drivers/net/wireless/libertas/if_sdio.c |   14 --------------
 1 files changed, 0 insertions(+), 14 deletions(-)
diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c
index 2ecab49..3c4c555 100644
--- a/drivers/net/wireless/libertas/if_sdio.c
+++ b/drivers/net/wireless/libertas/if_sdio.c
@@ -825,20 +825,6 @@ static void if_sdio_finish_power_on(struct if_sdio_card *card)

 	sdio_release_host(func);

-	/*
-	 * FUNC_INIT is required for SD8688 WLAN/BT multiple functions
-	 */
-	if (card->model == MODEL_8688) {
-		struct cmd_header cmd;
-
-		memset(&cmd, 0, sizeof(cmd));
-
-		lbs_deb_sdio("send function INIT command\n");
-		if (__lbs_cmd(priv, CMD_FUNC_INIT, &cmd, sizeof(cmd),
-				lbs_cmd_copyback, (unsigned long) &cmd))
-			netdev_alert(priv->dev, "CMD_FUNC_INIT cmd failed\n");
-	}
-
Removing FUNC_INIT could break things in some scenarios.
Could you please test the following case?

1. insmod liberates -> download firmware, send FUNC_INIT, ...
2. rmmod libertas -> send FUNC_SHUTDOWN command to firmware; BT is still working.
3. insmod libertas -> skip firmware downloading, send FUNC_INIT, ...

If FUNC_INIT is removed, I don't expect step 3 to work.

Thanks,
Bing
quoted
 	priv->fw_ready = 1;
 	wake_up(&card->pwron_waitq);

--
1.7.1
Lubomir, any reply?  Should I drop this one?

-- 
John W. Linville		Someday the world will need a hero, and you
linville@tuxdriver.com			might be all we have.  Be ready.
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