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mwifiex: claim sdio bus while downloading the firmware

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Our 8887 A2 chip can have separate firmware images for
bluetooth and WLAN. We observed an issue during parallel
downloading of these images by btmrvl and mwifiex drivers.

This patch claims sdio bus before starting of the firmware
download in mwifiex and releases it after completion to
fix the problem.

Signed-off-by: Aniket Nagarnaik <aniketn@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Aniket Nagarnaik 2015-08-06 00:39:16 -07:00 committed by Kalle Valo
parent 2375fa2b36
commit cb9d61e530
1 changed files with 4 additions and 0 deletions
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4
drivers/net/wireless/mwifiex/sdio.c
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@ -920,6 +920,8 @@ static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
if (!fwbuf)
return -ENOMEM;
sdio_claim_host(card->func);
/* Perform firmware data transfer */
do {
/* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY
@ -1024,6 +1026,8 @@ static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
offset += txlen;
} while (true);
sdio_release_host(card->func);
mwifiex_dbg(adapter, MSG,
"info: FW download over, size %d bytes\n", offset);