From b3781c74373489fa325ce64efdf72f6c8567b783 Mon Sep 17 00:00:00 2001 From: Andrey Yurovsky Date: Fri, 12 Jun 2009 12:45:36 -0700 Subject: [PATCH] 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 Signed-off-by: Javier Cardona Signed-off-by: John W. Linville --- drivers/net/wireless/libertas/if_spi.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/libertas/if_spi.c b/drivers/net/wireless/libertas/if_spi.c index f8c2898d82b0..dc2a1f6ee36c 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. -- 2.30.2