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(parent: 6ff33f3) | patch
regmap: debugfs: Ensure we don't underflow when printing access masks
authorMark Brown <broonie@kernel.org>
Sat, 19 Sep 2015 14:00:18 +0000 (07:00 -0700)
committerMark Brown <broonie@kernel.org>
Sat, 19 Sep 2015 14:38:11 +0000 (07:38 -0700)
commitb763ec17ac762470eec5be8ebcc43e4f8b2c2b82
tree3210c0da561a9e0fe9d0b7ccf1a262835ce7d23btree | snapshot
parent6ff33f3902c3b1c5d0db6b1e2c70b6d76fba357fcommit | diff
regmap: debugfs: Ensure we don't underflow when printing access masks

If a read is attempted which is smaller than the line length then we may
underflow the subtraction we're doing with the unsigned size_t type so
move some of the calculation to be additions on the right hand side
instead in order to avoid this.

Reported-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
drivers/base/regmap/regmap-debugfs.c diff | blob | history
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