edac, mc: Improve scrub rate handling

Fortify the interface to not accept negative values, remove
memctrl_int_store() as a result. Also, sanitize bandwidth setting by
making the argument a simple u32 instead of strange u32 pointer being
passed around for no obvious reason. Then, fix error handling and teach
it to return proper error values. Finally, make code more readable,
simplify debug messages.

Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Arthur Jones <ajones@riverbed.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Acked-by: Doug Thompson <dougthompson@xmission.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/edac/e752x_edac.c b/drivers/edac/e752x_edac.c
index ae3f80c54198..073f5a06d238 100644
--- a/drivers/edac/e752x_edac.c
+++ b/drivers/edac/e752x_edac.c
@@ -958,7 +958,7 @@ static void e752x_check(struct mem_ctl_info *mci)
 }
 
 /* Program byte/sec bandwidth scrub rate to hardware */
-static int set_sdram_scrub_rate(struct mem_ctl_info *mci, u32 *new_bw)
+static int set_sdram_scrub_rate(struct mem_ctl_info *mci, u32 new_bw)
 {
         const struct scrubrate *scrubrates;
         struct e752x_pvt *pvt = (struct e752x_pvt *) mci->pvt_info;
@@ -975,7 +975,7 @@ static int set_sdram_scrub_rate(struct mem_ctl_info *mci, u32 *new_bw)
          * desired rate and program the cooresponding register value.
          */
         for (i = 0; scrubrates[i].bandwidth != SDRATE_EOT; i++)
-                if (scrubrates[i].bandwidth >= *new_bw)
+                if (scrubrates[i].bandwidth >= new_bw)
                         break;
 
         if (scrubrates[i].bandwidth == SDRATE_EOT)