1 files changed, 0 insertions, 65 deletions

diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c
index db442cd6621e..ee604e92a5fa 100644
--- a/drivers/s390/block/xpram.c
+++ b/drivers/s390/block/xpram.c
@@ -42,7 +42,6 @@
 #include <linux/suspend.h>
 #include <linux/platform_device.h>
 #include <asm/uaccess.h>
-#include <asm/checksum.h>
 
 #define XPRAM_NAME      "xpram"
 #define XPRAM_DEVS      1       /* one partition */
@@ -51,7 +50,6 @@
 typedef struct {
         unsigned int    size;           /* size of xpram segment in pages */
         unsigned int    offset;         /* start page of xpram segment */
-        unsigned int    csum;           /* partition checksum for suspend */
 } xpram_device_t;
 
 static xpram_device_t xpram_devices[XPRAM_MAX_DEVS];
@@ -387,58 +385,6 @@ out:
 }
 
 /*
- * Save checksums for all partitions.
- */
-static int xpram_save_checksums(void)
-{
-        unsigned long mem_page;
-        int rc, i;
-
-        rc = 0;
-        mem_page = (unsigned long) __get_free_page(GFP_KERNEL);
-        if (!mem_page)
-                return -ENOMEM;
-        for (i = 0; i < xpram_devs; i++) {
-                rc = xpram_page_in(mem_page, xpram_devices[i].offset);
-                if (rc)
-                        goto fail;
-                xpram_devices[i].csum = csum_partial((const void *) mem_page,
-                                                     PAGE_SIZE, 0);
-        }
-fail:
-        free_page(mem_page);
-        return rc ? -ENXIO : 0;
-}
-
-/*
- * Verify checksums for all partitions.
- */
-static int xpram_validate_checksums(void)
-{
-        unsigned long mem_page;
-        unsigned int csum;
-        int rc, i;
-
-        rc = 0;
-        mem_page = (unsigned long) __get_free_page(GFP_KERNEL);
-        if (!mem_page)
-                return -ENOMEM;
-        for (i = 0; i < xpram_devs; i++) {
-                rc = xpram_page_in(mem_page, xpram_devices[i].offset);
-                if (rc)
-                        goto fail;
-                csum = csum_partial((const void *) mem_page, PAGE_SIZE, 0);
-                if (xpram_devices[i].csum != csum) {
-                        rc = -EINVAL;
-                        goto fail;
-                }
-        }
-fail:
-        free_page(mem_page);
-        return rc ? -ENXIO : 0;
-}
-
-/*
  * Resume failed: Print error message and call panic.
  */
 static void xpram_resume_error(const char *message)
@@ -458,21 +404,10 @@ static int xpram_restore(struct device *dev)
                 xpram_resume_error("xpram disappeared");
         if (xpram_pages != xpram_highest_page_index() + 1)
                 xpram_resume_error("Size of xpram changed");
-        if (xpram_validate_checksums())
-                xpram_resume_error("Data of xpram changed");
         return 0;
 }
 
-/*
- * Save necessary state in suspend.
- */
-static int xpram_freeze(struct device *dev)
-{
-        return xpram_save_checksums();
-}
-
 static struct dev_pm_ops xpram_pm_ops = {
-        .freeze         = xpram_freeze,
         .restore        = xpram_restore,
 };