2015-06-13 10:56:58

by Nicholas Mc Guire

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Subject: [BUG ?] irda: via-ircc: condition with no effect

From: Nicholas Mc Guire <[email protected]>

scanning for trivial bug-patters with coccinelle spatches returned:
./drivers/net/irda/via-ircc.c:598
WARNING: condition with no effect (if branch == else)

This code was added prior to the transition to git (Linux-2.6.12-rc2) so
I was not really able to track back what the intent was.

drivers/net/irda/via-ircc.c - line numbers from 4.1-rc7
598 if (IsSIROn(iobase)) { //sir
599 EnGPIOtoRX2(iobase, OFF);
600 WriteGIO(iobase, OFF);
601 EnRX2(iobase, OFF); //sir to rx2
602 } else { // fir mir
603 EnGPIOtoRX2(iobase, OFF);
604 WriteGIO(iobase, OFF);
605 EnRX2(iobase, OFF); //fir to rx
606 }

Given the comments that indicate that the if/else case actually are
different this may be a bug - if not the comments might need fixing.

thx!
hofrat