nvme: merge nvme_ns_ioctl into nvme_ioctl

[ Upstream commit 90ec611adcf20b96d0c2b7166497d53e4301a57f ]

Merge the two functions to make future changes a little easier.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 1cdfea3c094a2abd38634c993ac78dca5fbc0234..82f5f1d030d4542c3aec6d00e8fed7d3eb77f11b 100644 (file)
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1298,32 +1298,11 @@ static void nvme_put_ns_from_disk(struct nvme_ns_head *head, int idx)
                srcu_read_unlock(&head->srcu, idx);
 }
 
-static int nvme_ns_ioctl(struct nvme_ns *ns, unsigned cmd, unsigned long arg)
-{
-       switch (cmd) {
-       case NVME_IOCTL_ID:
-               force_successful_syscall_return();
-               return ns->head->ns_id;
-       case NVME_IOCTL_ADMIN_CMD:
-               return nvme_user_cmd(ns->ctrl, NULL, (void __user *)arg);
-       case NVME_IOCTL_IO_CMD:
-               return nvme_user_cmd(ns->ctrl, ns, (void __user *)arg);
-       case NVME_IOCTL_SUBMIT_IO:
-               return nvme_submit_io(ns, (void __user *)arg);
-       default:
-               if (ns->ndev)
-                       return nvme_nvm_ioctl(ns, cmd, arg);
-               if (is_sed_ioctl(cmd))
-                       return sed_ioctl(ns->ctrl->opal_dev, cmd,
-                                        (void __user *) arg);
-               return -ENOTTY;
-       }
-}
-
 static int nvme_ioctl(struct block_device *bdev, fmode_t mode,
                unsigned int cmd, unsigned long arg)
 {
        struct nvme_ns_head *head = NULL;
+       void __user *argp = (void __user *)arg;
        struct nvme_ns *ns;
        int srcu_idx, ret;
 
@@ -1331,7 +1310,29 @@ static int nvme_ioctl(struct block_device *bdev, fmode_t mode,
        if (unlikely(!ns))
                return -EWOULDBLOCK;
 
-       ret = nvme_ns_ioctl(ns, cmd, arg);
+       switch (cmd) {
+       case NVME_IOCTL_ID:
+               force_successful_syscall_return();
+               ret = ns->head->ns_id;
+               break;
+       case NVME_IOCTL_ADMIN_CMD:
+               ret = nvme_user_cmd(ns->ctrl, NULL, argp);
+               break;
+       case NVME_IOCTL_IO_CMD:
+               ret = nvme_user_cmd(ns->ctrl, ns, argp);
+               break;
+       case NVME_IOCTL_SUBMIT_IO:
+               ret = nvme_submit_io(ns, argp);
+               break;
+       default:
+               if (ns->ndev)
+                       ret = nvme_nvm_ioctl(ns, cmd, arg);
+               else if (is_sed_ioctl(cmd))
+                       ret = sed_ioctl(ns->ctrl->opal_dev, cmd, argp);
+               else
+                       ret = -ENOTTY;
+       }
+
        nvme_put_ns_from_disk(head, srcu_idx);
        return ret;
 }