Re: [PATCH 1/6] usb: gadget: net2280: fix sparse warnings

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On Fri, Mar 22 2013, Felipe Balbi wrote:
> fix the following sparse warnings:
>
> drivers/usb/gadget/net2280.c:2063:13: warning: Using plain integer as NULL pointer
> drivers/usb/gadget/net2280.c:2321:68: warning: Using plain integer as NULL pointer
> drivers/usb/gadget/net2280.c:2349:68: warning: Using plain integer as NULL pointer
> drivers/usb/gadget/net2280.c:2371:68: warning: Using plain integer as NULL pointer
>
> Signed-off-by: Felipe Balbi <balbi@xxxxxx>

My choice would be “!(e = …)” but “(e = …) == NULL” is fine too.  (Of
course ideally assignment would be pulled out of if, but that's not the
job of this commit.)

Acked-by: Michal Nazarewicz <mina86@xxxxxxxxxx>

> ---
>  drivers/usb/gadget/net2280.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
> index 691cc65..e869188 100644
> --- a/drivers/usb/gadget/net2280.c
> +++ b/drivers/usb/gadget/net2280.c
> @@ -2060,7 +2060,7 @@ static void handle_ep_small (struct net2280_ep *ep)
>  		return;
>  
>  	/* manual DMA queue advance after short OUT */
> -	if (likely (ep->dma != 0)) {
> +	if (likely (ep->dma)) {
>  		if (t & (1 << SHORT_PACKET_TRANSFERRED_INTERRUPT)) {
>  			u32	count;
>  			int	stopped = ep->stopped;
> @@ -2318,7 +2318,7 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat)
>  			/* hw handles device and interface status */
>  			if (u.r.bRequestType != (USB_DIR_IN|USB_RECIP_ENDPOINT))
>  				goto delegate;
> -			if ((e = get_ep_by_addr (dev, w_index)) == 0
> +			if ((e = get_ep_by_addr (dev, w_index)) == NULL
>  					|| w_length > 2)
>  				goto do_stall;
>  
> @@ -2346,7 +2346,7 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat)
>  			if (w_value != USB_ENDPOINT_HALT
>  					|| w_length != 0)
>  				goto do_stall;
> -			if ((e = get_ep_by_addr (dev, w_index)) == 0)
> +			if ((e = get_ep_by_addr (dev, w_index)) == NULL)
>  				goto do_stall;
>  			if (e->wedged) {
>  				VDEBUG(dev, "%s wedged, halt not cleared\n",
> @@ -2368,7 +2368,7 @@ static void handle_stat0_irqs (struct net2280 *dev, u32 stat)
>  			if (w_value != USB_ENDPOINT_HALT
>  					|| w_length != 0)
>  				goto do_stall;
> -			if ((e = get_ep_by_addr (dev, w_index)) == 0)
> +			if ((e = get_ep_by_addr (dev, w_index)) == NULL)
>  				goto do_stall;
>  			if (e->ep.name == ep0name)
>  				goto do_stall;
> -- 
> 1.8.2
>

-- 
Best regards,                                         _     _
.o. | Liege of Serenely Enlightened Majesty of      o' \,=./ `o
..o | Computer Science,  Michał “mina86” Nazarewicz    (o o)
ooo +----<email/xmpp: mpn@xxxxxxxxxx>--------------ooO--(_)--Ooo--

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