memory hotplug/s390: set phys_device

[mirror_ubuntu-artful-kernel.git] / drivers / s390 / char / sclp_cmd.c

diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index b3beab610da445334be1818b4f8ae05e81e941ba..fc7ae05ce48ae262374b0becc3373a1b42d00690 100644 (file)
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -704,6 +704,13 @@ int sclp_chp_deconfigure(struct chp_id chpid)
        return do_chp_configure(SCLP_CMDW_DECONFIGURE_CHPATH | chpid.id << 8);
 }
 
+int arch_get_memory_phys_device(unsigned long start_pfn)
+{
+       if (!rzm)
+               return 0;
+       return PFN_PHYS(start_pfn) / rzm;
+}
+
 struct chp_info_sccb {
        struct sccb_header header;
        u8 recognized[SCLP_CHP_INFO_MASK_SIZE];