diff mbox

mwifiex: claim sdio bus while downloading the firmware

Message ID 1438846756-30520-1-git-send-email-akarwar@marvell.com (mailing list archive)
State Accepted
Delegated to: Kalle Valo
Headers show

Commit Message

Amitkumar Karwar Aug. 6, 2015, 7:39 a.m. UTC 
From: Aniket Nagarnaik <aniketn@marvell.com>

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>
---
 drivers/net/wireless/mwifiex/sdio.c | 4 ++++
 1 file changed, 4 insertions(+)

Comments

Kalle Valo Aug. 13, 2015, 12:36 p.m. UTC | #1 
> From: Aniket Nagarnaik <aniketn@marvell.com>
> 
> 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>

Thanks, applied to wireless-drivers-next.git.

Kalle Valo
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
diff mbox

Patch

diff --git a/drivers/net/wireless/mwifiex/sdio.c b/drivers/net/wireless/mwifiex/sdio.c
index 7cef27e9..5d05c6f 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);