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usb: gadget: r8a66597: fix unused-but-set-variable warnings

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This patch fixes the following (W=1) warnings:

drivers/usb/gadget/udc/r8a66597-udc.c: In function ‘r8a66597_irq’:
drivers/usb/gadget/udc/r8a66597-udc.c:1468:15: warning: variable ‘nrdyenb’ set but not used [-Wunused-but-set-variable]
  u16 brdyenb, nrdyenb, bempenb;
               ^
drivers/usb/gadget/udc/r8a66597-udc.c:1467:15: warning: variable ‘nrdysts’ set but not used [-Wunused-but-set-variable]
  u16 brdysts, nrdysts, bempsts;
               ^

In doing so, it removes calls to r8a66597_read function which does I/O
with the device, but I hope the reads don’t have any side effects that
are needed.

Signed-off-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Michal Nazarewicz 2016-05-31 14:17:23 +02:00 committed by Felipe Balbi
parent d58fcf81bb
commit 906ae52db2
1 changed files with 6 additions and 18 deletions
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24
drivers/usb/gadget/udc/r8a66597-udc.c
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@ -1464,8 +1464,6 @@ static irqreturn_t r8a66597_irq(int irq, void *_r8a66597)
struct r8a66597 *r8a66597 = _r8a66597;
u16 intsts0;
u16 intenb0;
u16 brdysts, nrdysts, bempsts;
u16 brdyenb, nrdyenb, bempenb;
u16 savepipe;
u16 mask0;
@ -1481,12 +1479,10 @@ static irqreturn_t r8a66597_irq(int irq, void *_r8a66597)
mask0 = intsts0 & intenb0;
if (mask0) {
brdysts = r8a66597_read(r8a66597, BRDYSTS);
nrdysts = r8a66597_read(r8a66597, NRDYSTS);
bempsts = r8a66597_read(r8a66597, BEMPSTS);
brdyenb = r8a66597_read(r8a66597, BRDYENB);
nrdyenb = r8a66597_read(r8a66597, NRDYENB);
bempenb = r8a66597_read(r8a66597, BEMPENB);
u16 brdysts = r8a66597_read(r8a66597, BRDYSTS);
u16 bempsts = r8a66597_read(r8a66597, BEMPSTS);
u16 brdyenb = r8a66597_read(r8a66597, BRDYENB);
u16 bempenb = r8a66597_read(r8a66597, BEMPENB);
if (mask0 & VBINT) {
r8a66597_write(r8a66597, 0xffff & ~VBINT,
@ -1658,20 +1654,14 @@ static int r8a66597_dequeue(struct usb_ep *_ep, struct usb_request *_req)
static int r8a66597_set_halt(struct usb_ep *_ep, int value)
{
struct r8a66597_ep *ep;
struct r8a66597_request *req;
struct r8a66597_ep *ep = container_of(_ep, struct r8a66597_ep, ep);
unsigned long flags;
int ret = 0;
ep = container_of(_ep, struct r8a66597_ep, ep);
req = get_request_from_ep(ep);
spin_lock_irqsave(&ep->r8a66597->lock, flags);
if (!list_empty(&ep->queue)) {
ret = -EAGAIN;
goto out;
}
if (value) {
} else if (value) {
ep->busy = 1;
pipe_stall(ep->r8a66597, ep->pipenum);
} else {
@ -1679,8 +1669,6 @@ static int r8a66597_set_halt(struct usb_ep *_ep, int value)
ep->wedge = 0;
pipe_stop(ep->r8a66597, ep->pipenum);
}
out:
spin_unlock_irqrestore(&ep->r8a66597->lock, flags);
return ret;
}