tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 5e63226c72287bc6c6724d4fc7e157af0e3d7908 commit: 3a29355a22c0275fe864100794fee58a73175d93 [8900/10945] gpio: Add virtio-gpio driver config: alpha-allmodconfig (attached as .config) compiler: alpha-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-348-gf0e6938b-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=3a29355a22c0275fe864100794fee58a73175d93 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 3a29355a22c0275fe864100794fee58a73175d93 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=alpha If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/gpio/gpio-virtio.c:58:19: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] type @@ got restricted __le16 [usertype] @@ drivers/gpio/gpio-virtio.c:58:19: sparse: expected unsigned short [usertype] type drivers/gpio/gpio-virtio.c:58:19: sparse: got restricted __le16 [usertype] >> drivers/gpio/gpio-virtio.c:59:19: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] gpio @@ got restricted __le16 [usertype] @@ drivers/gpio/gpio-virtio.c:59:19: sparse: expected unsigned short [usertype] gpio drivers/gpio/gpio-virtio.c:59:19: sparse: got restricted __le16 [usertype] >> drivers/gpio/gpio-virtio.c:296:35: sparse: sparse: cast to restricted __le32 >> drivers/gpio/gpio-virtio.c:297:25: sparse: sparse: cast to restricted __le16 vim +58 drivers/gpio/gpio-virtio.c 39 40 static int _virtio_gpio_req(struct virtio_gpio *vgpio, u16 type, u16 gpio, 41 u8 txvalue, u8 *rxvalue, void *response, u32 rxlen) 42 { 43 struct virtio_gpio_line *line = &vgpio->lines[gpio]; 44 struct virtio_gpio_request *req = &line->req; 45 struct virtio_gpio_response *res = response; 46 struct scatterlist *sgs[2], req_sg, res_sg; 47 struct device *dev = &vgpio->vdev->dev; 48 int ret; 49 50 /* 51 * Prevent concurrent requests for the same line since we have 52 * pre-allocated request/response buffers for each GPIO line. Moreover 53 * Linux always accesses a GPIO line sequentially, so this locking shall 54 * always go through without any delays. 55 */ 56 mutex_lock(&line->lock); 57 > 58 req->type = cpu_to_le16(type); > 59 req->gpio = cpu_to_le16(gpio); 60 req->value = txvalue; 61 62 sg_init_one(&req_sg, req, sizeof(*req)); 63 sg_init_one(&res_sg, res, rxlen); 64 sgs[0] = &req_sg; 65 sgs[1] = &res_sg; 66 67 line->rxlen = 0; 68 reinit_completion(&line->completion); 69 70 /* 71 * Virtqueue callers need to ensure they don't call its APIs with other 72 * virtqueue operations at the same time. 73 */ 74 mutex_lock(&vgpio->lock); 75 ret = virtqueue_add_sgs(vgpio->request_vq, sgs, 1, 1, line, GFP_KERNEL); 76 if (ret) { 77 dev_err(dev, "failed to add request to vq\n"); 78 mutex_unlock(&vgpio->lock); 79 goto out; 80 } 81 82 virtqueue_kick(vgpio->request_vq); 83 mutex_unlock(&vgpio->lock); 84 85 if (!wait_for_completion_timeout(&line->completion, HZ)) { 86 dev_err(dev, "GPIO operation timed out\n"); 87 ret = -ETIMEDOUT; 88 goto out; 89 } 90 91 if (unlikely(res->status != VIRTIO_GPIO_STATUS_OK)) { 92 dev_err(dev, "GPIO request failed: %d\n", gpio); 93 ret = -EINVAL; 94 goto out; 95 } 96 97 if (unlikely(line->rxlen != rxlen)) { 98 dev_err(dev, "GPIO operation returned incorrect len (%u : %u)\n", 99 rxlen, line->rxlen); 100 ret = -EINVAL; 101 goto out; 102 } 103 104 if (rxvalue) 105 *rxvalue = res->value; 106 107 out: 108 mutex_unlock(&line->lock); 109 return ret; 110 } 111 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
Attachment:
.config.gz
Description: application/gzip
