| From | Greg Kroah-Hartman <> | Subject | [ 036/102] ath9k_htc: reboot firmware if it was loaded | Date | Thu, 8 Aug 2013 18:57:12 -0700 |
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3.10-stable review patch. If anyone has any objections, please let me know.
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From: Oleksij Rempel <linux@rempel-privat.de>
commit 4928bd2ef8ece262f4f314630219999a91eaa440 upstream.
Currently ath9k_htc will reboot firmware only if interface was ever started. Which lead to the problem in case where interface was never started but module need to be reloaded.
This patch will partially fix bug "ath9k_htc: Target is unresponsive" https://github.com/qca/open-ath9k-htc-firmware/issues/1
Reproduction case: - plug adapter - make sure nothing will touch it. Stop Networkmanager or blacklist mac address of this adapter. - rmmod ath9k_htc; sleep 1; modprobe ath9k_htc
Signed-off-by: Oleksij Rempel <linux@rempel-privat.de> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/net/wireless/ath/ath9k/hif_usb.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/net/wireless/ath/ath9k/hif_usb.c +++ b/drivers/net/wireless/ath/ath9k/hif_usb.c @@ -1289,7 +1289,9 @@ static void ath9k_hif_usb_disconnect(str usb_set_intfdata(interface, NULL); - if (!unplugged && (hif_dev->flags & HIF_USB_START)) + /* If firmware was loaded we should drop it + * go back to first stage bootloader. */ + if (!unplugged && (hif_dev->flags & HIF_USB_READY)) ath9k_hif_usb_reboot(udev); kfree(hif_dev);
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