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Subject[PATCH 4.4 032/124] wlcore: sdio: check for valid platform device data before suspend
4.4-stable review patch.  If anyone has any objections, please let me know.


From: Eyal Reizer <>

[ 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 <>
Signed-off-by: Kalle Valo <>
Signed-off-by: Sasha Levin <>
Signed-off-by: Greg Kroah-Hartman <>
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
@@ -388,6 +388,11 @@ 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",

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