[PATCH v4] PCI: mediatek: Fix integer truncation and handle oversized resources

[Sreeraj S Kurup]

Hi PCI Maintainers,

Apologies for omitting the revision history in the main patch post.
Here is the complete changelog for v4:

Changelog:
 - v4: Fixed struct device pointer access (pcie->dev) for dev_err().
       Verified build and passed Sashiko review checks.
       [Subject: PCI: mediatek: Fix integer truncation and handle
       oversized resources]

 - v3: Replaced clamping logic with strict size validation
       (size_order > 31 returns -EINVAL), added !size check, and
       updated size calculation to fls64(size - 1) to handle
       power-of-two sizes correctly.
       [Subject: PCI: mediatek: Fix integer truncation and handle
       oversized resources]

 - v2: Added size clamping for size_order > 31 to prevent overflowing
       the 5-bit AHB2PCIE_SIZE() macro mask.
       [Subject: PCI: mediatek: Fix integer truncation in fls() and
       clamp size]

 - v1: Initial submission using fls64() to handle 64-bit resource
       sizes and prevent integer truncation.
       [Subject: PCI: mediatek: Fix integer truncation in fls() for
       resource size]

Best regards,
Sreeraj