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| author | Henry Martin <bsdhenrymartin@gmail.com> | 2025-04-07 06:23:49 +0300 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2025-05-22 13:57:36 +0300 |
| commit | 8f30e2b059757d8711a823e4c9c023db62a1d171 (patch) | |
| tree | 5e9500ed1bfa8d20f59dfb524558872e6b344af6 | |
| parent | 8284815ca161e0fa0861cc4085f1c0141e10a34d (diff) | |
| download | linux-8f30e2b059757d8711a823e4c9c023db62a1d171.tar.xz | |
wifi: mt76: mt7996: Fix null-ptr-deref in mt7996_mmio_wed_init()
devm_ioremap() returns NULL on error. Currently, mt7996_mmio_wed_init()
does not check for this case, which results in a NULL pointer
dereference.
Prevent null pointer dereference in mt7996_mmio_wed_init()
Fixes: 83eafc9251d6 ("wifi: mt76: mt7996: add wed tx support")
Signed-off-by: Henry Martin <bsdhenrymartin@gmail.com>
Link: https://patch.msgid.link/20250407032349.83360-1-bsdhenrymartin@gmail.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7996/mmio.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c index 51dd9a5f83cc..30b40f4a91be 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c @@ -477,6 +477,9 @@ int mt7996_mmio_wed_init(struct mt7996_dev *dev, void *pdev_ptr, wed->wlan.base = devm_ioremap(dev->mt76.dev, pci_resource_start(pci_dev, 0), pci_resource_len(pci_dev, 0)); + if (!wed->wlan.base) + return -ENOMEM; + wed->wlan.phy_base = pci_resource_start(pci_dev, 0); if (hif2) { |