From: Marek Vasut marex@denx.de
commit c434e5e48dc4e626364491455f97e2db0aa137b1 upstream.
The rsi_resume() does access the bus to enable interrupts on the RSI SDIO WiFi card, however when calling sdio_claim_host() in the resume path, it is possible the bus is already claimed and sdio_claim_host() spins indefinitelly. Enable the SDIO card interrupts in resume_noirq instead to prevent anything else from claiming the SDIO bus first.
Fixes: 20db07332736 ("rsi: sdio suspend and resume support") Signed-off-by: Marek Vasut marex@denx.de Cc: Amitkumar Karwar amit.karwar@redpinesignals.com Cc: Angus Ainslie angus@akkea.ca Cc: David S. Miller davem@davemloft.net Cc: Jakub Kicinski kuba@kernel.org Cc: Kalle Valo kvalo@codeaurora.org Cc: Karun Eagalapati karun256@gmail.com Cc: Martin Kepplinger martink@posteo.de Cc: Sebastian Krzyszkowiak sebastian.krzyszkowiak@puri.sm Cc: Siva Rebbagondla siva8118@gmail.com Cc: netdev@vger.kernel.org Cc: stable@vger.kernel.org Signed-off-by: Kalle Valo kvalo@codeaurora.org Link: https://lore.kernel.org/r/20210327235932.175896-1-marex@denx.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/wireless/rsi/rsi_91x_sdio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/wireless/rsi/rsi_91x_sdio.c +++ b/drivers/net/wireless/rsi/rsi_91x_sdio.c @@ -1400,7 +1400,7 @@ static int rsi_restore(struct device *de } static const struct dev_pm_ops rsi_pm_ops = { .suspend = rsi_suspend, - .resume = rsi_resume, + .resume_noirq = rsi_resume, .freeze = rsi_freeze, .thaw = rsi_thaw, .restore = rsi_restore,