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| author | Maxim Korotkov <korotkov.maxim.s@gmail.com> | 2022-11-17 15:30:34 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2022-11-21 14:41:52 +0100 |
| commit | 64c150339e7f6c5cbbe8c17a56ef2b3902612798 (patch) | |
| tree | 8c1b53bd0508c7e63c126263f1af20e453f1b6cb /drivers/pinctrl/mediatek | |
| parent | eb7081409f94a9a8608593d0fb63a1aa3d6f95d8 (diff) | |
pinctrl: single: Fix potential division by zero
There is a possibility of dividing by zero due to the pcs->bits_per_pin
if pcs->fmask() also has a value of zero and called fls
from asm-generic/bitops/builtin-fls.h or arch/x86/include/asm/bitops.h.
The function pcs_probe() has the branch that assigned to fmask 0 before
pcs_allocate_pin_table() was called
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 4e7e8017a80e ("pinctrl: pinctrl-single: enhance to configure multiple pins of different modules")
Signed-off-by: Maxim Korotkov <korotkov.maxim.s@gmail.com>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20221117123034.27383-1-korotkov.maxim.s@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/mediatek')
0 files changed, 0 insertions, 0 deletions