[Xen-devel] [patch 3/3] xen/privcmd: remove const modifier from declaration

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

When we use this pointer, we cast away the const modifier and modify the
data.  I think it was an accident to declare it as const.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/include/xen/privcmd.h b/include/xen/privcmd.h
index a853168..58ed953 100644
--- a/include/xen/privcmd.h
+++ b/include/xen/privcmd.h
@@ -69,7 +69,7 @@ struct privcmd_mmapbatch_v2 {
        unsigned int num; /* number of pages to populate */
        domid_t dom;      /* target domain */
        __u64 addr;       /* virtual address */
-       const xen_pfn_t __user *arr; /* array of mfns */
+       xen_pfn_t __user *arr; /* array of mfns */
        int __user *err;  /* array of error codes */
 };
 
diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c
index 0ce006a..fceb83e 100644
--- a/drivers/xen/privcmd.c
+++ b/drivers/xen/privcmd.c
@@ -389,7 +389,7 @@ static long privcmd_ioctl_mmap_batch(void __user *udata, 
int version)
 
        if (state.global_error && (version == 1)) {
                /* Write back errors in second pass. */
-               state.user_mfn = (xen_pfn_t *)m.arr;
+               state.user_mfn = m.arr;
                state.err      = err_array;
                ret = traverse_pages(m.num, sizeof(xen_pfn_t),
                                     &pagelist, mmap_return_errors_v1, &state);

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