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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-01-28 04:20:32 +0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-05-29 02:10:58 +0400
commit5e2af0c09e60d11dd8297e259a9ca2b3d92d2cf4 (patch)
treed4c7b687508ea48ab0fb844cbe61e7521ed17f01 /drivers/edac/ppc4xx_edac.c
parent084a4fccef39ac7abb039511f32380f28d0b67e6 (diff)
downloadlinux-5e2af0c09e60d11dd8297e259a9ca2b3d92d2cf4.tar.xz
edac: Don't initialize csrow's first_page & friends when not needed
Almost all edac drivers initialize csrow_info->first_page, csrow_info->last_page and csrow_info->page_mask. Those vars are used inside the EDAC core, in order to calculate the csrow affected by an error, by using the routine edac_mc_find_csrow_by_page(). However, very few drivers actually use it: e752x_edac.c e7xxx_edac.c i3000_edac.c i82443bxgx_edac.c i82860_edac.c i82875p_edac.c i82975x_edac.c r82600_edac.c There also a few other drivers that have their own calculus formula internally using those vars. All the others are just wasting time by initializing those data. While initializing data without using them won't cause any troubles, as those information is stored at the wrong place (at csrows structure), it is better to remove what is unused, in order to simplify the next patch. Reviewed-by: Aristeu Rozanski <arozansk@redhat.com> Acked-by: Borislav Petkov <borislav.petkov@amd.com> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Cc: Doug Thompson <norsk5@yahoo.com> Cc: Hitoshi Mitake <h.mitake@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: "Niklas Söderlund" <niklas.soderlund@ericsson.com> Cc: Josh Boyer <jwboyer@gmail.com> Cc: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/edac/ppc4xx_edac.c')
-rw-r--r--drivers/edac/ppc4xx_edac.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/edac/ppc4xx_edac.c b/drivers/edac/ppc4xx_edac.c
index a75e56788b29..ec5e529e33f6 100644
--- a/drivers/edac/ppc4xx_edac.c
+++ b/drivers/edac/ppc4xx_edac.c
@@ -897,7 +897,6 @@ ppc4xx_edac_init_csrows(struct mem_ctl_info *mci, u32 mcopt1)
enum edac_type edac_mode;
int row, j;
u32 mbxcf, size;
- static u32 ppc4xx_last_page;
/* Establish the memory type and width */
@@ -959,10 +958,6 @@ ppc4xx_edac_init_csrows(struct mem_ctl_info *mci, u32 mcopt1)
goto done;
}
- csi->first_page = ppc4xx_last_page;
- csi->last_page = csi->first_page + csi->nr_pages - 1;
- csi->page_mask = 0;
-
/*
* It's unclear exactly what grain should be set to
* here. The SDRAM_ECCES register allows resolution of
@@ -984,8 +979,6 @@ ppc4xx_edac_init_csrows(struct mem_ctl_info *mci, u32 mcopt1)
dimm->dtype = dtype;
dimm->edac_mode = edac_mode;
-
- ppc4xx_last_page += csi->nr_pages;
}
}