[PATCH v1] xen/xenbus: Convert to use ERR_CAST()

[Shen Lichuan <shenlichuan@xxxxxxxx>]

Use ERR_CAST() as it is designed for casting an error pointer to 
another type.

This macro utilizes the __force and __must_check modifiers, which instruct 
the compiler to verify for errors at the locations where it is employed.

Signed-off-by: Shen Lichuan <shenlichuan@xxxxxxxx>
---
 drivers/xen/xenbus/xenbus_xs.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/xen/xenbus/xenbus_xs.c b/drivers/xen/xenbus/xenbus_xs.c
index 028a182bcc9e..d32c726f7a12 100644
--- a/drivers/xen/xenbus/xenbus_xs.c
+++ b/drivers/xen/xenbus/xenbus_xs.c
@@ -427,12 +427,12 @@ char **xenbus_directory(struct xenbus_transaction t,
 
        path = join(dir, node);
        if (IS_ERR(path))
-               return (char **)path;
+               return ERR_CAST(path);
 
        strings = xs_single(t, XS_DIRECTORY, path, &len);
        kfree(path);
        if (IS_ERR(strings))
-               return (char **)strings;
+               return ERR_CAST(strings);
 
        return split(strings, len, num);
 }
@@ -465,7 +465,7 @@ void *xenbus_read(struct xenbus_transaction t,
 
        path = join(dir, node);
        if (IS_ERR(path))
-               return (void *)path;
+               return ERR_CAST(path);
 
        ret = xs_single(t, XS_READ, path, len);
        kfree(path);
-- 
2.17.1