[PATCH 2/8] EDAC/{skx_common,skx,i10nm}: Split skx_set_decode()

[Qiuxu Zhuo]

skx_set_decode() currently handles both address decoding and Retry
Read error Log (RRL) reporting, coupling two independent functions
in a single API. This complicates setup/teardown and forces callers
to update unrelated state.

Introduce skx_set_show_rrl() and keep skx_set_decode() focused on
decode setup, allowing decode and RRL handling to be managed
independently.

Also rename the callback type and variable to skx_show_rrl_f and
show_rrl for clearer RRL terminology and consistency.

No functional changes intended.

Tested-by: Yi Lai <yi1.lai@xxxxxxxxx>
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@xxxxxxxxx>
---
 drivers/edac/i10nm_base.c | 10 ++++++----
 drivers/edac/skx_base.c   |  6 +++---
 drivers/edac/skx_common.c | 15 ++++++++++-----
 drivers/edac/skx_common.h |  5 +++--
 4 files changed, 22 insertions(+), 14 deletions(-)

diff --git a/drivers/edac/i10nm_base.c b/drivers/edac/i10nm_base.c
index 0a0236583eb7..c09790d5b95e 100644
--- a/drivers/edac/i10nm_base.c
+++ b/drivers/edac/i10nm_base.c
@@ -1208,13 +1208,13 @@ static int __init i10nm_init(void)
 	skx_setup_debug("i10nm_test");
 
 	if (retry_rd_err_log && res_cfg->reg_rrl_ddr) {
-		skx_set_decode(i10nm_mc_decode, show_retry_rd_err_log);
+		skx_set_show_rrl(show_retry_rd_err_log);
 		if (retry_rd_err_log == 2)
 			enable_retry_rd_err_log(true);
-	} else {
-		skx_set_decode(i10nm_mc_decode, NULL);
 	}
 
+	skx_set_decode(i10nm_mc_decode);
+
 	i10nm_printk(KERN_INFO, "%s\n", I10NM_REVISION);
 
 	return 0;
@@ -1227,10 +1227,12 @@ static void __exit i10nm_exit(void)
 {
 	edac_dbg(2, "\n");
 
+	skx_set_decode(NULL);
+
 	if (retry_rd_err_log && res_cfg->reg_rrl_ddr) {
-		skx_set_decode(NULL, NULL);
 		if (retry_rd_err_log == 2)
 			enable_retry_rd_err_log(false);
+		skx_set_show_rrl(NULL);
 	}
 
 	skx_teardown_debug();
diff --git a/drivers/edac/skx_base.c b/drivers/edac/skx_base.c
index aa6593ccda2d..de749413ff9a 100644
--- a/drivers/edac/skx_base.c
+++ b/drivers/edac/skx_base.c
@@ -671,14 +671,14 @@ static int __init skx_init(void)
 		}
 	}
 
-	skx_set_decode(skx_decode, skx_show_retry_rd_err_log);
+	skx_set_show_rrl(skx_show_retry_rd_err_log);
 
 	if (nvdimm_count && skx_adxl_get() != -ENODEV) {
-		skx_set_decode(NULL, skx_show_retry_rd_err_log);
+		skx_set_decode(NULL);
 	} else {
 		if (nvdimm_count)
 			skx_printk(KERN_NOTICE, "Only decoding DDR4 address!\n");
-		skx_set_decode(skx_decode, skx_show_retry_rd_err_log);
+		skx_set_decode(skx_decode);
 	}
 
 	/* Ensure that the OPSTATE is set correctly for POLL or NMI */
diff --git a/drivers/edac/skx_common.c b/drivers/edac/skx_common.c
index 1c4cc21679bc..2cdef2e69d71 100644
--- a/drivers/edac/skx_common.c
+++ b/drivers/edac/skx_common.c
@@ -46,7 +46,7 @@ static unsigned long adxl_nm_bitmap;
 
 static char skx_msg[MSG_SIZE];
 static skx_decode_f driver_decode;
-static skx_show_retry_log_f skx_show_retry_rd_err_log;
+static skx_show_rrl_f show_rrl;
 static u64 skx_tolm, skx_tohm;
 static LIST_HEAD(dev_edac_list);
 static bool skx_mem_cfg_2lm;
@@ -312,13 +312,18 @@ void skx_set_res_cfg(struct res_config *cfg)
 }
 EXPORT_SYMBOL_GPL(skx_set_res_cfg);
 
-void skx_set_decode(skx_decode_f decode, skx_show_retry_log_f show_retry_log)
+void skx_set_decode(skx_decode_f decode)
 {
 	driver_decode = decode;
-	skx_show_retry_rd_err_log = show_retry_log;
 }
 EXPORT_SYMBOL_GPL(skx_set_decode);
 
+void skx_set_show_rrl(skx_show_rrl_f rrl)
+{
+	show_rrl = rrl;
+}
+EXPORT_SYMBOL_GPL(skx_set_show_rrl);
+
 static int skx_get_pkg_id(struct skx_dev *d, u8 *id)
 {
 	int node;
@@ -767,8 +772,8 @@ static void skx_mce_output_error(struct mem_ctl_info *mci,
 			 res->row, res->column, res->bank_address, res->bank_group);
 	}
 
-	if (skx_show_retry_rd_err_log)
-		skx_show_retry_rd_err_log(res, skx_msg + len, MSG_SIZE - len, scrub_err);
+	if (show_rrl)
+		show_rrl(res, skx_msg + len, MSG_SIZE - len, scrub_err);
 
 	edac_dbg(0, "%s\n", skx_msg);
 
diff --git a/drivers/edac/skx_common.h b/drivers/edac/skx_common.h
index 95412459a84f..5a08f219e46d 100644
--- a/drivers/edac/skx_common.h
+++ b/drivers/edac/skx_common.h
@@ -324,14 +324,15 @@ struct res_config {
 typedef int (*get_dimm_config_f)(struct mem_ctl_info *mci,
 				 struct res_config *cfg);
 typedef bool (*skx_decode_f)(struct decoded_addr *res);
-typedef void (*skx_show_retry_log_f)(struct decoded_addr *res, char *msg, int len, bool scrub_err);
+typedef void (*skx_show_rrl_f)(struct decoded_addr *res, char *msg, int len, bool scrub_err);
 
 u64 skx_readx(void __iomem *addr, u8 width);
 u64 skx_read_imc_reg(struct skx_imc *imc, int chan, u32 offset, u8 width);
 void skx_write_imc_reg(struct skx_imc *imc, int chan, u32 offset, u8 width, u64 val);
 int skx_adxl_get(void);
 void skx_adxl_put(void);
-void skx_set_decode(skx_decode_f decode, skx_show_retry_log_f show_retry_log);
+void skx_set_decode(skx_decode_f decode);
+void skx_set_show_rrl(skx_show_rrl_f rrl);
 void skx_set_mem_cfg(bool mem_cfg_2lm);
 void skx_set_res_cfg(struct res_config *cfg);
 void skx_init_mc_mapping(struct skx_dev *d);
-- 
2.43.0