4.9-stable review patch. If anyone has any objections, please let me know.
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From: Eyal Reizer eyalreizer@gmail.com
[ Upstream commit 6e91d48371e79862ea2c05867aaebe4afe55a865 ]
the wl pointer can be null In case only wlcore_sdio is probed while no WiLink module is successfully probed, as in the case of mounting a wl12xx module while using a device tree file configured with wl18xx related settings. In this case the system was crashing in wl1271_suspend() as platform device data is not set. Make sure wl the pointer is valid before using it.
Signed-off-by: Eyal Reizer eyalr@ti.com Signed-off-by: Kalle Valo kvalo@codeaurora.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/wireless/ti/wlcore/sdio.c | 5 +++++ 1 file changed, 5 insertions(+)
--- a/drivers/net/wireless/ti/wlcore/sdio.c +++ b/drivers/net/wireless/ti/wlcore/sdio.c @@ -404,6 +404,11 @@ static int wl1271_suspend(struct device mmc_pm_flag_t sdio_flags; int ret = 0;
+ if (!wl) { + dev_err(dev, "no wilink module was probed\n"); + goto out; + } + dev_dbg(dev, "wl1271 suspend. wow_enabled: %d\n", wl->wow_enabled);