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d0e71e23ec
This reverts commit e6595224464b692ddae193d783402130d1625147. These kinds of patches are only making the code worse. Compilers don't care about the unnecessary check, but removing it makes the code less obvious to a human. The declaration of 'len' is more than 80 lines earlier, so a human won't easily see that 'len' is of an unsigned type, so to a human the range check that checks against zero is much more explicit and obvious. Any tool that complains about a range check like this just because the variable is unsigned is actively detrimental, and should be ignored. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>