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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-08-26 22:21:19 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-27 09:25:06 +0200 |
| commit | bfd08d06d978d0304eb6f7855b548aa2cd1c5486 (patch) | |
| tree | 545c1bafeb772a17cc375930efd40cdaae0244bc | |
| parent | 068834a2773b6a12805105cfadbb3d4229fc6e0a (diff) | |
| download | linux-visconti-bfd08d06d978d0304eb6f7855b548aa2cd1c5486.tar.gz | |
USB: gadget: u_f: Unbreak offset calculation in VLAs
Inadvertently the commit b1cd1b65afba ("USB: gadget: u_f: add overflow checks
to VLA macros") makes VLA macros to always return 0 due to different scope of
two variables of the same name. Obviously we need to have only one.
Fixes: b1cd1b65afba ("USB: gadget: u_f: add overflow checks to VLA macros")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Brooke Basile <brookebasile@gmail.com>
Cc: stable <stable@kernel.org>
Link: https://lore.kernel.org/r/20200826192119.56450-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/gadget/u_f.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/usb/gadget/u_f.h b/drivers/usb/gadget/u_f.h index df4e1dcb357dff..e313c3b8dcb19a 100644 --- a/drivers/usb/gadget/u_f.h +++ b/drivers/usb/gadget/u_f.h @@ -25,9 +25,9 @@ size_t offset = 0; \ if (groupname##__next != SIZE_MAX) { \ size_t align_mask = __alignof__(type) - 1; \ - size_t offset = (groupname##__next + align_mask) \ - & ~align_mask; \ size_t size = array_size(n, sizeof(type)); \ + offset = (groupname##__next + align_mask) & \ + ~align_mask; \ if (check_add_overflow(offset, size, \ &groupname##__next)) { \ groupname##__next = SIZE_MAX; \ @@ -43,8 +43,8 @@ size_t offset = 0; \ if (groupname##__next != SIZE_MAX) { \ size_t align_mask = __alignof__(type) - 1; \ - size_t offset = (groupname##__next + align_mask) \ - & ~align_mask; \ + offset = (groupname##__next + align_mask) & \ + ~align_mask; \ if (check_add_overflow(offset, groupname##_##name##__sz,\ &groupname##__next)) { \ groupname##__next = SIZE_MAX; \ |