media: videobuf-dma-sg: number of pages should be unsigned long

As reported by smatch:

	drivers/media/v4l2-core/videobuf-dma-sg.c:245 videobuf_dma_init_kernel() warn: should 'nr_pages << 12' be a 64 bit type?

The printk should not be using %d for the number of pages.

After looking better, the real problem here is that the
number of pages should be long int.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

diff --git a/drivers/media/v4l2-core/videobuf-dma-sg.c b/drivers/media/v4l2-core/videobuf-dma-sg.c
index 46ff19d..8dd0562 100644 (file)
--- a/drivers/media/v4l2-core/videobuf-dma-sg.c
+++ b/drivers/media/v4l2-core/videobuf-dma-sg.c
@@ -180,7 +180,7 @@ static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma,
        if (rw == READ)
                flags |= FOLL_WRITE;
 
-       dprintk(1, "init user [0x%lx+0x%lx => %d pages]\n",
+       dprintk(1, "init user [0x%lx+0x%lx => %lu pages]\n",
                data, size, dma->nr_pages);
 
        err = pin_user_pages(data & PAGE_MASK, dma->nr_pages,
@@ -188,7 +188,7 @@ static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma,
 
        if (err != dma->nr_pages) {
                dma->nr_pages = (err >= 0) ? err : 0;
-               dprintk(1, "pin_user_pages: err=%d [%d]\n", err,
+               dprintk(1, "pin_user_pages: err=%d [%lu]\n", err,
                        dma->nr_pages);
                return err < 0 ? err : -EINVAL;
        }
@@ -208,11 +208,11 @@ static int videobuf_dma_init_user(struct videobuf_dmabuf *dma, int direction,
 }
 
 static int videobuf_dma_init_kernel(struct videobuf_dmabuf *dma, int direction,
-                            int nr_pages)
+                                   unsigned long nr_pages)
 {
        int i;
 
-       dprintk(1, "init kernel [%d pages]\n", nr_pages);
+       dprintk(1, "init kernel [%lu pages]\n", nr_pages);
 
        dma->direction = direction;
        dma->vaddr_pages = kcalloc(nr_pages, sizeof(*dma->vaddr_pages),
@@ -238,11 +238,11 @@ static int videobuf_dma_init_kernel(struct videobuf_dmabuf *dma, int direction,
        dma->vaddr = vmap(dma->vaddr_pages, nr_pages, VM_MAP | VM_IOREMAP,
                          PAGE_KERNEL);
        if (NULL == dma->vaddr) {
-               dprintk(1, "vmalloc_32(%d pages) failed\n", nr_pages);
+               dprintk(1, "vmalloc_32(%lu pages) failed\n", nr_pages);
                goto out_free_pages;
        }
 
-       dprintk(1, "vmalloc is at addr %p, size=%d\n",
+       dprintk(1, "vmalloc is at addr %p, size=%lu\n",
                dma->vaddr, nr_pages << PAGE_SHIFT);
 
        memset(dma->vaddr, 0, nr_pages << PAGE_SHIFT);
@@ -267,9 +267,9 @@ out_free_pages:
 }
 
 static int videobuf_dma_init_overlay(struct videobuf_dmabuf *dma, int direction,
-                             dma_addr_t addr, int nr_pages)
+                             dma_addr_t addr, unsigned long nr_pages)
 {
-       dprintk(1, "init overlay [%d pages @ bus 0x%lx]\n",
+       dprintk(1, "init overlay [%lu pages @ bus 0x%lx]\n",
                nr_pages, (unsigned long)addr);
        dma->direction = direction;
 
@@ -500,9 +500,11 @@ static int __videobuf_iolock(struct videobuf_queue *q,
                             struct videobuf_buffer *vb,
                             struct v4l2_framebuffer *fbuf)
 {
-       int err, pages;
-       dma_addr_t bus;
        struct videobuf_dma_sg_memory *mem = vb->priv;
+       unsigned long pages;
+       dma_addr_t bus;
+       int err;
+
        BUG_ON(!mem);
 
        MAGIC_CHECK(mem->magic, MAGIC_SG_MEM);

diff --git a/include/media/videobuf-dma-sg.h b/include/media/videobuf-dma-sg.h
index 34450f7..930ff8d 100644 (file)
--- a/include/media/videobuf-dma-sg.h
+++ b/include/media/videobuf-dma-sg.h
@@ -60,7 +60,7 @@ struct videobuf_dmabuf {
        /* common */
        struct scatterlist  *sglist;
        int                 sglen;
-       int                 nr_pages;
+       unsigned long       nr_pages;
        int                 direction;
 };