diff options
| author | Henry Martin <bsdhenrymartin@gmail.com> | 2025-04-07 09:19:00 +0300 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2025-05-22 13:57:36 +0300 |
| commit | efb95439c1477bbc955cacd0179c35e7861b437c (patch) | |
| tree | 6344f041002894ab4ff8d0ce600b81ad997bce5d | |
| parent | 8f30e2b059757d8711a823e4c9c023db62a1d171 (diff) | |
| download | linux-efb95439c1477bbc955cacd0179c35e7861b437c.tar.xz | |
wifi: mt76: mt7915: Fix null-ptr-deref in mt7915_mmio_wed_init()
devm_ioremap() returns NULL on error. Currently, mt7915_mmio_wed_init()
does not check for this case, which results in a NULL pointer
dereference.
Prevent null pointer dereference in mt7915_mmio_wed_init().
Fixes: 4f831d18d12d ("wifi: mt76: mt7915: enable WED RX support")
Signed-off-by: Henry Martin <bsdhenrymartin@gmail.com>
Link: https://patch.msgid.link/20250407061900.85317-1-bsdhenrymartin@gmail.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7915/mmio.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c index 876f0692850a..9c4d5cea0c42 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c @@ -651,6 +651,9 @@ int mt7915_mmio_wed_init(struct mt7915_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); wed->wlan.wpdma_int = pci_resource_start(pci_dev, 0) + MT_INT_WED_SOURCE_CSR; @@ -678,6 +681,9 @@ int mt7915_mmio_wed_init(struct mt7915_dev *dev, void *pdev_ptr, wed->wlan.bus_type = MTK_WED_BUS_AXI; wed->wlan.base = devm_ioremap(dev->mt76.dev, res->start, resource_size(res)); + if (!wed->wlan.base) + return -ENOMEM; + wed->wlan.phy_base = res->start; wed->wlan.wpdma_int = res->start + MT_INT_SOURCE_CSR; wed->wlan.wpdma_mask = res->start + MT_INT_MASK_CSR; |