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authorAndrey Yurovsky <andrey@cozybit.com>2009-06-12 12:45:36 -0700
committerJohn W. Linville <linville@tuxdriver.com>2009-06-15 15:05:51 -0400
commitb3781c74373489fa325ce64efdf72f6c8567b783 (patch)
treed715fc68a73b3ef8cf697d4cce8b5f790f513260
parent68f2d02669f7102be80aae47155f45e18950d223 (diff)
libertas: fix IEEE PS mode in GSPI driver
The card firmware does not set the Command Download Ready interrupt bit when IEEE PS mode is enabled, preventing the driver from sending commands (such as the command to exit IEEE PS mode) since there is no indication that the card is ready to accept commands. This patch works around the problem by using the the TX Download Ready bit in place of the Command Download Ready Bit while in IEEE PS mode. TX Download Ready is set in IEEE PS mode. Signed-off-by: Andrey Yurovsky <andrey@cozybit.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/libertas/if_spi.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/wireless/libertas/if_spi.c b/drivers/net/wireless/libertas/if_spi.c
index f8c2898d82b..dc2a1f6ee36 100644
--- a/drivers/net/wireless/libertas/if_spi.c
+++ b/drivers/net/wireless/libertas/if_spi.c
@@ -875,7 +875,12 @@ static int lbs_spi_thread(void *data)
err = if_spi_c2h_data(card);
if (err)
goto err;
- if (hiStatus & IF_SPI_HIST_CMD_DOWNLOAD_RDY) {
+
+ /* workaround: in PS mode, the card does not set the Command
+ * Download Ready bit, but it sets TX Download Ready. */
+ if (hiStatus & IF_SPI_HIST_CMD_DOWNLOAD_RDY ||
+ (card->priv->psstate != PS_STATE_FULL_POWER &&
+ (hiStatus & IF_SPI_HIST_TX_DOWNLOAD_RDY))) {
/* This means two things. First of all,
* if there was a previous command sent, the card has
* successfully received it.