From: Andrey Yurovsky <andrey@cozybit.com>
Date: Thu, 18 Jun 2009 16:51:57 +0000 (-0700)
Subject: libertas: correct card cleanup order in SPI driver
X-Git-Tag: v2.6.32-rc1~703^2~701
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=efcfd1f28f6a5c377a0e630ca2c96c54eb3f1e8f;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git

libertas: correct card cleanup order in SPI driver

The SPI driver does a couple of card cleanup steps in the wrong order on
module removal.  If IEEE PS is enabled, this results in the card being
left in IEEE PS mode and subsequent failures to reload the module.  The
problem is that the surpriseremoved flag is set before calling
lbs_remove_card, but that function needs to issue a command to exit IEEE
PS mode (the flag blocks the command path).  In addition, lbs_stop_card
should be called first because it clears out any pending commands.

Tested on a GSPI device with V9 firmware by confirming that we can
reload the module with or without IEEE PS enabled.

Also fix a warning from the wrong uint format in a printk.

V2: use z modifier, thanks Sebastian.

Signed-off-by: Andrey Yurovsky <andrey@cozybit.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/libertas/if_spi.c b/drivers/net/wireless/libertas/if_spi.c
index b213de4..963c201 100644
--- a/drivers/net/wireless/libertas/if_spi.c
+++ b/drivers/net/wireless/libertas/if_spi.c
@@ -737,7 +737,7 @@ static int if_spi_c2h_data(struct if_spi_card *card)
 		goto out;
 	} else if (len > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) {
 		lbs_pr_err("%s: error: card has %d bytes of data, but "
-			   "our maximum skb size is %lu\n",
+			   "our maximum skb size is %zu\n",
 			   __func__, len, MRVDRV_ETH_RX_PACKET_BUFFER_SIZE);
 		err = -EINVAL;
 		goto out;
@@ -1170,12 +1170,13 @@ static int __devexit libertas_spi_remove(struct spi_device *spi)
 
 	lbs_deb_spi("libertas_spi_remove\n");
 	lbs_deb_enter(LBS_DEB_SPI);
-	priv->surpriseremoved = 1;
 
 	lbs_stop_card(priv);
+	lbs_remove_card(priv); /* will call free_netdev */
+
+	priv->surpriseremoved = 1;
 	free_irq(spi->irq, card);
 	if_spi_terminate_spi_thread(card);
-	lbs_remove_card(priv); /* will call free_netdev */
 	if (card->pdata->teardown)
 		card->pdata->teardown(spi);
 	free_if_spi_card(card);