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Commit b3781c74 authored by Andrey Yurovsky's avatar Andrey Yurovsky Committed by John W. Linville
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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: default avatarAndrey Yurovsky <andrey@cozybit.com>
Signed-off-by: default avatarJavier Cardona <javier@cozybit.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 68f2d026

drivers/net/wireless/libertas/if_spi.c

+6 −1
Original line number Diff line number Diff line
@@ -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.