From cb9d61e5304e2880180e4ccf685a298c868094e0 Mon Sep 17 00:00:00 2001 From: Aniket Nagarnaik Date: Thu, 6 Aug 2015 00:39:16 -0700 Subject: [PATCH] mwifiex: claim sdio bus while downloading the firmware 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 Signed-off-by: Amitkumar Karwar Signed-off-by: Kalle Valo --- drivers/net/wireless/mwifiex/sdio.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/mwifiex/sdio.c b/drivers/net/wireless/mwifiex/sdio.c index 7cef27e9d33f..5d05c6fe6429 100644 --- a/drivers/net/wireless/mwifiex/sdio.c +++ b/drivers/net/wireless/mwifiex/sdio.c @@ -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); -- GitLab