Re: linux-4.6-rc5/drivers/tty/serial/8250/8250_port.c:1818]: (style) Redundant condition

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On Mon, Apr 25, 2016 at 05:57:32PM +0000, David Binderman wrote:
> Hello there,
> 
> linux-4.6-rc5/drivers/tty/serial/8250/8250_port.c:1818]: (style) Redundant condition: up.dma. '!up.dma || (up.dma && up.dma.tx_err)' is equivalent to '!up.dma || up.dma.tx_err'
> 
> Source code is
> 
>    if ((!up->dma || (up->dma && up->dma->tx_err)) &&
>         (status & UART_LSR_THRE))
> 
> Maybe better code
> 
>    if ((!up->dma || up->dma->tx_err) &&
>         (status & UART_LSR_THRE))
> 
> Also:
> 
> [drivers/tty/serial/8250/8250_port.c:1858]: (style) Variable 'int0' is assigned a value that is never used.
> [drivers/tty/serial/8250/8250_port.c:1859]: (style) Variable 'int1' is assigned a value that is never used.
> [drivers/tty/serial/8250/8250_port.c:1860]: (style) Variable 'int2' is assigned a value that is never used.
> [drivers/tty/serial/8250/8250_port.c:1861]: (style) Variable 'int3' is assigned a value that is never used.

Patches are always welcome :)

thanks,

greg k-h
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