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H A Dspapr_hcall.cf9ab1e87 Tue Jan 19 19:58:07 CST 2016 David Gibson <david@gibson.dropbear.id.au> ppc: Clean up error handling in ppc_set_compat()

Current ppc_set_compat() returns -1 for errors, and also (unconditionally)
reports an error message. The caller in h_client_architecture_support()
may then report it again using an outdated fprintf().

Clean this up by using the modern error reporting mechanisms. Also add
strerror(errno) to the error message.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
H A Dspapr.cf9ab1e87 Tue Jan 19 19:58:07 CST 2016 David Gibson <david@gibson.dropbear.id.au> ppc: Clean up error handling in ppc_set_compat()

Current ppc_set_compat() returns -1 for errors, and also (unconditionally)
reports an error message. The caller in h_client_architecture_support()
may then report it again using an outdated fprintf().

Clean this up by using the modern error reporting mechanisms. Also add
strerror(errno) to the error message.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Markus Armbruster <armbru@redhat.com>