On Fri, Jan 18, 2013 at 02:17:09PM +0200, Roger Quadros wrote:
> +/* only PHY and UNUSED modes don't need TLL */
> +#define omap_usb_mode_needs_tll(x) ((x != OMAP_USBHS_PORT_MODE_UNUSED) &&\
> + (x != OMAP_EHCI_PORT_MODE_PHY))
Growl.
These parens do not make anything safer at all - they just obfuscate. The
safe version of the above macro would have been:
#define omap_usb_mode_needs_tll(x) ((x) != OMAP_USBHS_PORT_MODE_UNUSED &&\
(x) != OMAP_EHCI_PORT_MODE_PHY)
If you're going to use a macro argument in an expression, it needs parens.
Simple expressions like a != b && c != d do _not_ need parens.
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