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SubjectRe: [PATCH 1/8] EDAC/amd64: Fix number of DIMMs and Chip Select bases/masks on Family17h
On Thu, Jun 13, 2019 at 09:00:19PM +0000, Ghannam, Yazen wrote:
> Do you have any tips on how to handle it? I'm thinking it may be
> tricky because of the ranges and multiple variables.

It ain't pretty. It seems the if-else thing is still better, after all.

---
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 873437be86d9..16235c0ef7e5 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -936,13 +936,25 @@ static void dump_misc_regs(struct amd64_pvt *pvt)
*/
static void prep_chip_selects(struct amd64_pvt *pvt)
{
- if (pvt->fam == 0xf && pvt->ext_model < K8_REV_F) {
+ switch (pvt->fam) {
+ case 0xf:
+ if (pvt->ext_model >= K8_REV_F)
+ goto dflt;
+
pvt->csels[0].b_cnt = pvt->csels[1].b_cnt = 8;
pvt->csels[0].m_cnt = pvt->csels[1].m_cnt = 8;
- } else if (pvt->fam == 0x15 && pvt->model == 0x30) {
+ break;
+
+ case 0x15:
+ if (pvt->model != 0x30)
+ goto dflt;
+
pvt->csels[0].b_cnt = pvt->csels[1].b_cnt = 4;
pvt->csels[0].m_cnt = pvt->csels[1].m_cnt = 2;
- } else {
+ break;
+
+dflt:
+ default:
pvt->csels[0].b_cnt = pvt->csels[1].b_cnt = 8;
pvt->csels[0].m_cnt = pvt->csels[1].m_cnt = 4;
}
--
Regards/Gruss,
Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

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