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misc: echo: Remove unnecessary parentheses and simplify check for zero

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[ Upstream commit 85dc2c65e6c975baaf36ea30f2ccc0a36a8c8add ]

Clang warns when multiple pairs of parentheses are used for a single
conditional statement.

drivers/misc/echo/echo.c:384:27: warning: equality comparison with
extraneous parentheses [-Wparentheses-equality]
        if ((ec->nonupdate_dwell == 0)) {
             ~~~~~~~~~~~~~~~~~~~~^~~~
drivers/misc/echo/echo.c:384:27: note: remove extraneous parentheses
around the comparison to silence this warning
        if ((ec->nonupdate_dwell == 0)) {
            ~                    ^   ~
drivers/misc/echo/echo.c:384:27: note: use '=' to turn this equality
comparison into an assignment
        if ((ec->nonupdate_dwell == 0)) {
                                 ^~
                                 =
1 warning generated.

Remove them and while we're at it, simplify the zero check as '!var' is
used more than 'var == 0'.

Reported-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Nathan Chancellor 2018-09-14 23:43:37 -07:00 committed by Greg Kroah-Hartman
parent 995f8a9681
commit 026c7b1515
1 changed files with 1 additions and 1 deletions
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2
drivers/misc/echo/echo.c
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@ -454,7 +454,7 @@ int16_t oslec_update(struct oslec_state *ec, int16_t tx, int16_t rx)
*/
ec->factor = 0;
ec->shift = 0;
if ((ec->nonupdate_dwell == 0)) {
if (!ec->nonupdate_dwell) {
int p, logp, shift;
/* Determine: