From: Daniel Drake Date: Mon, 3 Sep 2012 19:49:09 +0000 (-0400) Subject: libertas sdio: fix suspend when interface is down X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f10723841e624c0726c70356b31d91befed01dd6;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git libertas sdio: fix suspend when interface is down When the interface is down, the hardware is powered off. However, the suspend handler currently tries to send host sleep commands (when wakeup params are set) in this configuration, causing a system hang when going into suspend (the commands will never complete). Avoid this by detecting this situation and simply returning from the suspend handler without doing anything special. Signed-off-by: Daniel Drake Acked-by: Dan Williams Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c index e970897f6ab5..4cb234349fbf 100644 --- a/drivers/net/wireless/libertas/if_sdio.c +++ b/drivers/net/wireless/libertas/if_sdio.c @@ -1326,6 +1326,11 @@ static int if_sdio_suspend(struct device *dev) mmc_pm_flag_t flags = sdio_get_host_pm_caps(func); + /* If we're powered off anyway, just let the mmc layer remove the + * card. */ + if (!lbs_iface_active(card->priv)) + return -ENOSYS; + dev_info(dev, "%s: suspend: PM flags = 0x%x\n", sdio_func_id(func), flags);