Messages in this thread | | | Date | Tue, 23 Dec 2014 16:37:21 +0100 | From | Arend van Spriel <> | Subject | Re: [PATCH] brcmfmac: Do not crash if platform data is not populated |
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On 12/23/14 15:48, Mika Westerberg wrote: > 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.
Thanks, Mika
However, this was already reported by Dan Carpenter and I submitted a patch for that a couple of days ago: "[PATCH 02/10] brcmfmac: Fix possible dereference of NULL pointer." [1].
Regards, Arend
[1] http://mid.gmane.org/1419162233-19492-3-git-send-email-arend@broadcom.com
> 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> > --- > drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c > index 3c06e9365949..9880dae2a569 100644 > --- 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);
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