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| author | Atish Patra <atish.patra@wdc.com> | 2020-06-25 16:45:06 -0700 |
|---|---|---|
| committer | Ard Biesheuvel <ardb@kernel.org> | 2020-07-09 09:45:09 +0300 |
| commit | 950accbabd4cfa83519fa920f99428bcc131c3c9 (patch) | |
| tree | d061b7f8c00e18417d62174940cc486decf6c47a /drivers/firmware/efi | |
| parent | c1aac64ddc01112e137121a43645b96c3633c41b (diff) | |
| download | linux-stable-950accbabd4cfa83519fa920f99428bcc131c3c9.tar.gz linux-stable-950accbabd4cfa83519fa920f99428bcc131c3c9.tar.bz2 linux-stable-950accbabd4cfa83519fa920f99428bcc131c3c9.zip | |
efi/libstub: Fix gcc error around __umoddi3 for 32 bit builds
32bit gcc doesn't support modulo operation on 64 bit data. It results in
a __umoddi3 error while building EFI for 32 bit.
Use bitwise operations instead of modulo operations to fix the issue.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Link: https://lore.kernel.org/r/20200625234516.31406-2-atish.patra@wdc.com
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'drivers/firmware/efi')
| -rw-r--r-- | drivers/firmware/efi/libstub/alignedmem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/firmware/efi/libstub/alignedmem.c b/drivers/firmware/efi/libstub/alignedmem.c index cc89c4d6196f..1de9878ddd3a 100644 --- a/drivers/firmware/efi/libstub/alignedmem.c +++ b/drivers/firmware/efi/libstub/alignedmem.c @@ -44,7 +44,7 @@ efi_status_t efi_allocate_pages_aligned(unsigned long size, unsigned long *addr, *addr = ALIGN((unsigned long)alloc_addr, align); if (slack > 0) { - int l = (alloc_addr % align) / EFI_PAGE_SIZE; + int l = (alloc_addr & (align - 1)) / EFI_PAGE_SIZE; if (l) { efi_bs_call(free_pages, alloc_addr, slack - l + 1); |