Virtualization - Mar 2017 - [vhost:linux-next 6/19] drivers/remoteproc/remoteproc_virtio.c:106:33: sparse: not enough arguments for function vring_new_virtqueue

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next
head:   8ab881d0e8136390da79aa0902fe03d2f6c65e32
commit: 281310d52c1d63630f54b1ac5cca6e9eb8715b3a [6/19] virtio: add context flag
to find vqs
reproduce:
        # apt-get install sparse
        git checkout 281310d52c1d63630f54b1ac5cca6e9eb8715b3a
        make ARCH=x86_64 allmodconfig
        make C=1 CF=-D__CHECK_ENDIAN__


sparse warnings: (new ones prefixed by >>)

   include/linux/compiler.h:264:8: sparse: attribute
'no_sanitize_address': unknown attribute
>> drivers/remoteproc/remoteproc_virtio.c:106:33: sparse: not enough
arguments for function vring_new_virtqueue
   drivers/remoteproc/remoteproc_virtio.c: In function 'rp_find_vq':
   drivers/remoteproc/remoteproc_virtio.c:107:27: error: passing argument 8 of
'vring_new_virtqueue' from incompatible pointer type
[-Werror=incompatible-pointer-types]
         rproc_virtio_notify, callback, name);
                              ^~~~~~~~
   In file included from drivers/remoteproc/remoteproc_virtio.c:25:0:
   include/linux/virtio_ring.h:93:19: note: expected 'bool (*)(struct
virtqueue *) {aka _Bool (*)(struct virtqueue *)}' but argument is of type
'void (*)(struct virtqueue *)'
    struct virtqueue *vring_new_virtqueue(unsigned int index,
                      ^~~~~~~~~~~~~~~~~~~
   drivers/remoteproc/remoteproc_virtio.c:107:37: error: passing argument 9 of
'vring_new_virtqueue' from incompatible pointer type
[-Werror=incompatible-pointer-types]
         rproc_virtio_notify, callback, name);
                                        ^~~~
   In file included from drivers/remoteproc/remoteproc_virtio.c:25:0:
   include/linux/virtio_ring.h:93:19: note: expected 'void (*)(struct
virtqueue *)' but argument is of type 'const char *'
    struct virtqueue *vring_new_virtqueue(unsigned int index,
                      ^~~~~~~~~~~~~~~~~~~
   drivers/remoteproc/remoteproc_virtio.c:106:7: error: too few arguments to
function 'vring_new_virtqueue'
     vq = vring_new_virtqueue(id, len, rvring->align, vdev, false, addr,
          ^~~~~~~~~~~~~~~~~~~
   In file included from drivers/remoteproc/remoteproc_virtio.c:25:0:
   include/linux/virtio_ring.h:93:19: note: declared here
    struct virtqueue *vring_new_virtqueue(unsigned int index,
                      ^~~~~~~~~~~~~~~~~~~
   drivers/remoteproc/remoteproc_virtio.c: At top level:
   drivers/remoteproc/remoteproc_virtio.c:264:14: error: initialization from
incompatible pointer type [-Werror=incompatible-pointer-types]
     .find_vqs = rproc_virtio_find_vqs,
                 ^~~~~~~~~~~~~~~~~~~~~
   drivers/remoteproc/remoteproc_virtio.c:264:14: note: (near initialization for
'rproc_virtio_config_ops.find_vqs')
   cc1: some warnings being treated as errors

vim +106 drivers/remoteproc/remoteproc_virtio.c

6457f126c drivers/remoteproc/remoteproc_virtio.c Michael S. Tsirkin 2012-09-05  
90
6db20ea8d drivers/remoteproc/remoteproc_virtio.c Ohad Ben-Cohen     2012-05-17  
91  	rvring = &rvdev->vring[id];
7a1869416 drivers/remoteproc/remoteproc_virtio.c Ohad Ben-Cohen     2012-02-13  
92  	addr = rvring->va;
7a1869416 drivers/remoteproc/remoteproc_virtio.c Ohad Ben-Cohen     2012-02-13  
93  	len = rvring->len;
ac8954a41 drivers/remoteproc/remoteproc_rpmsg.c  Ohad Ben-Cohen     2011-10-20  
94
7a1869416 drivers/remoteproc/remoteproc_virtio.c Ohad Ben-Cohen     2012-02-13  
95  	/* zero vring */
7a1869416 drivers/remoteproc/remoteproc_virtio.c Ohad Ben-Cohen     2012-02-13  
96  	size = vring_size(len, rvring->align);
7a1869416 drivers/remoteproc/remoteproc_virtio.c Ohad Ben-Cohen     2012-02-13  
97  	memset(addr, 0, size);
ac8954a41 drivers/remoteproc/remoteproc_rpmsg.c  Ohad Ben-Cohen     2011-10-20  
98
b5ab5e24e drivers/remoteproc/remoteproc_virtio.c Ohad Ben-Cohen     2012-05-30  
99  	dev_dbg(dev, "vring%d: va %p qsz %d notifyid %d\n",
7a1869416 drivers/remoteproc/remoteproc_virtio.c Ohad Ben-Cohen     2012-02-13 
100  		id, addr, len, rvring->notifyid);
ac8954a41 drivers/remoteproc/remoteproc_rpmsg.c  Ohad Ben-Cohen     2011-10-20 
101
dd6da1c5e drivers/remoteproc/remoteproc_rpmsg.c  Ohad Ben-Cohen     2012-01-12 
102  	/*
dd6da1c5e drivers/remoteproc/remoteproc_rpmsg.c  Ohad Ben-Cohen     2012-01-12 
103  	 * Create the new vq, and tell virtio we're not interested in
dd6da1c5e drivers/remoteproc/remoteproc_rpmsg.c  Ohad Ben-Cohen     2012-01-12 
104  	 * the 'weak' smp barriers, since we're talking with a real
device.
dd6da1c5e drivers/remoteproc/remoteproc_rpmsg.c  Ohad Ben-Cohen     2012-01-12 
105  	 */
17bb6d408 drivers/remoteproc/remoteproc_virtio.c Jason Wang         2012-08-28
@106  	vq = vring_new_virtqueue(id, len, rvring->align, vdev, false, addr,
ac8954a41 drivers/remoteproc/remoteproc_rpmsg.c  Ohad Ben-Cohen     2011-10-20 
107  				 rproc_virtio_notify, callback, name);
ac8954a41 drivers/remoteproc/remoteproc_rpmsg.c  Ohad Ben-Cohen     2011-10-20 
108  	if (!vq) {
b5ab5e24e drivers/remoteproc/remoteproc_virtio.c Ohad Ben-Cohen     2012-05-30 
109  		dev_err(dev, "vring_new_virtqueue %s failed\n", name);
6db20ea8d drivers/remoteproc/remoteproc_virtio.c Ohad Ben-Cohen     2012-05-17 
110  		rproc_free_vring(rvring);
7a1869416 drivers/remoteproc/remoteproc_virtio.c Ohad Ben-Cohen     2012-02-13 
111  		return ERR_PTR(-ENOMEM);
ac8954a41 drivers/remoteproc/remoteproc_rpmsg.c  Ohad Ben-Cohen     2011-10-20 
112  	}
ac8954a41 drivers/remoteproc/remoteproc_rpmsg.c  Ohad Ben-Cohen     2011-10-20 
113
7a1869416 drivers/remoteproc/remoteproc_virtio.c Ohad Ben-Cohen     2012-02-13 
114  	rvring->vq = vq;

:::::: The code at line 106 was first introduced by commit
:::::: 17bb6d40880d4178f5f8a75900ed8c9ff47d3fb2 virtio-ring: move queue_index to
vring_virtqueue

:::::: TO: Jason Wang <jasowang at redhat.com>
:::::: CC: Rusty Russell <rusty at rustcorp.com.au>

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