xen/pvcalls: check for xenbus_read() errors

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Smatch complains that "len" is uninitialized if xenbus_read() fails so
let's add some error handling.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

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Dan Carpenter 2017-12-05 17:38:43 +03:00 • committed by Boris Ostrovsky

parent 646d944c2e

commit 8c71fa88f7

1 changed files with 2 additions and 0 deletions

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drivers/xen/pvcalls-front.c

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