brcmfmac: Do not crash if platform data is not populated

The driver looks for pdata->oob_irq_supported to find out if wowl can be
supported. However, not all platforms populate pdata in which case we crash
the kernel because of NULL pointer dereference.

Fixes: 330b4e4be937 ("brcmfmac: Add wowl support for SDIO devices.")
Reported-by: Christophe Prigent <christophe.prigent@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
index 3c06e9365949a02e03e96d0f9fb51df9c006451c..9880dae2a56994b1e75a13acbba740e3af0aec7a 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
@@ -1070,7 +1070,7 @@ static int brcmf_ops_sdio_probe(struct sdio_func *func,
         */
        if ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_KEEP_POWER) &&
            ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_WAKE_SDIO_IRQ) ||
-            (sdiodev->pdata->oob_irq_supported)))
+            (sdiodev->pdata && sdiodev->pdata->oob_irq_supported)))
                bus_if->wowl_supported = true;
 #endif
 
@@ -1167,7 +1167,7 @@ static int brcmf_ops_sdio_resume(struct device *dev)
        struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
 
        brcmf_dbg(SDIO, "Enter\n");
-       if (sdiodev->pdata->oob_irq_supported)
+       if (sdiodev->pdata && sdiodev->pdata->oob_irq_supported)
                disable_irq_wake(sdiodev->pdata->oob_irq_nr);
        brcmf_sdio_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
        atomic_set(&sdiodev->suspend, false);