Re: [PATCH] usb: class: usblp: Fixed assignments inside if conditions

From: Alberto Ladron
Date: Wed May 17 2017 - 01:45:31 EST


On Tue, May 16, 2017 at 01:44:47PM +0800, kbuild test robot wrote:
Hi,

Here is the fix. Or I have to resubmit the whole patch?

Signed-off-by: Alberto Ladron <alberto.ladron@xxxxxxxxx>
---
diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c
index b1879ff..c335878 100644
--- a/drivers/usb/class/usblp.c
+++ b/drivers/usb/class/usblp.c
@@ -1018,7 +1018,7 @@ static int usblp_submit_read(struct usblp *usblp)
usblp->rcomplete = 0;
spin_unlock_irqrestore(&usblp->lock, flags);
rc = usb_submit_urb(urb, GFP_KERNEL);
- if (rv < 0) {
+ if (rc < 0) {
dev_dbg(&usblp->intf->dev, "error submitting urb (%d)\n", rc);
spin_lock_irqsave(&usblp->lock, flags);
usblp->rstatus = rc;



> Hi Alberto,
>
> [auto build test ERROR on usb/usb-testing]
> [also build test ERROR on v4.12-rc1 next-20170515]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>
> url: https://github.com/0day-ci/linux/commits/Alberto-Ladron/usb-class-usblp-Fixed-assignments-inside-if-conditions/20170513-140010
> base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
> config: x86_64-rhel (attached as .config)
> compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
> reproduce:
> # save the attached .config to linux build tree
> make ARCH=x86_64
>
> All errors (new ones prefixed by >>):
>
> drivers//usb/class/usblp.c: In function 'usblp_submit_read':
> >> drivers//usb/class/usblp.c:1021:6: error: 'rv' undeclared (first use in this function)
> if (rv < 0) {
> ^~
> drivers//usb/class/usblp.c:1021:6: note: each undeclared identifier is reported only once for each function it appears in
>
> vim +/rv +1021 drivers//usb/class/usblp.c
>
> 1005 urb = usb_alloc_urb(0, GFP_KERNEL);
> 1006 if (urb == NULL)
> 1007 goto raise_urb;
> 1008
> 1009 usb_fill_bulk_urb(urb, usblp->dev,
> 1010 usb_rcvbulkpipe(usblp->dev,
> 1011 usblp->protocol[usblp->current_protocol].epread->bEndpointAddress),
> 1012 usblp->readbuf, USBLP_BUF_SIZE_IN,
> 1013 usblp_bulk_read, usblp);
> 1014 usb_anchor_urb(urb, &usblp->urbs);
> 1015
> 1016 spin_lock_irqsave(&usblp->lock, flags);
> 1017 usblp->readcount = 0; /* XXX Why here? */
> 1018 usblp->rcomplete = 0;
> 1019 spin_unlock_irqrestore(&usblp->lock, flags);
> 1020 rc = usb_submit_urb(urb, GFP_KERNEL);
> > 1021 if (rv < 0) {
> 1022 dev_dbg(&usblp->intf->dev, "error submitting urb (%d)\n", rc);
> 1023 spin_lock_irqsave(&usblp->lock, flags);
> 1024 usblp->rstatus = rc;
> 1025 usblp->rcomplete = 1;
> 1026 spin_unlock_irqrestore(&usblp->lock, flags);
> 1027 goto raise_submit;
> 1028 }
> 1029
>
> ---
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