EDAC/mc_sysfs: Convert sprintf()/snprintf() to sysfs_emit()

Per Documentation/filesystems/sysfs.rst, show() should only use
sysfs_emit() or sysfs_emit_at() when formatting the value to be returned
to user space.

Generated by:

  make coccicheck M=<path/to/file> MODE=patch \
    COCCI=scripts/coccinelle/api/device_attr_show.cocci

No functional change intended.

  [ bp: Massage. ]

Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20240314084628.1322006-1-lizhijian@fujitsu.com

1 files changed, 23 insertions, 24 deletions

diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 5116873c3330..4200aec04831 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -146,7 +146,7 @@ static ssize_t csrow_ue_count_show(struct device *dev,
 {
 	struct csrow_info *csrow = to_csrow(dev);
 
-	return sprintf(data, "%u\n", csrow->ue_count);
+	return sysfs_emit(data, "%u\n", csrow->ue_count);
 }
 
 static ssize_t csrow_ce_count_show(struct device *dev,
@@ -154,7 +154,7 @@ static ssize_t csrow_ce_count_show(struct device *dev,
 {
 	struct csrow_info *csrow = to_csrow(dev);
 
-	return sprintf(data, "%u\n", csrow->ce_count);
+	return sysfs_emit(data, "%u\n", csrow->ce_count);
 }
 
 static ssize_t csrow_size_show(struct device *dev,
@@ -166,7 +166,7 @@ static ssize_t csrow_size_show(struct device *dev,
 
 	for (i = 0; i < csrow->nr_channels; i++)
 		nr_pages += csrow->channels[i]->dimm->nr_pages;
-	return sprintf(data, "%u\n", PAGES_TO_MiB(nr_pages));
+	return sysfs_emit(data, "%u\n", PAGES_TO_MiB(nr_pages));
 }
 
 static ssize_t csrow_mem_type_show(struct device *dev,
@@ -174,7 +174,7 @@ static ssize_t csrow_mem_type_show(struct device *dev,
 {
 	struct csrow_info *csrow = to_csrow(dev);
 
-	return sprintf(data, "%s\n", edac_mem_types[csrow->channels[0]->dimm->mtype]);
+	return sysfs_emit(data, "%s\n", edac_mem_types[csrow->channels[0]->dimm->mtype]);
 }
 
 static ssize_t csrow_dev_type_show(struct device *dev,
@@ -182,7 +182,7 @@ static ssize_t csrow_dev_type_show(struct device *dev,
 {
 	struct csrow_info *csrow = to_csrow(dev);
 
-	return sprintf(data, "%s\n", dev_types[csrow->channels[0]->dimm->dtype]);
+	return sysfs_emit(data, "%s\n", dev_types[csrow->channels[0]->dimm->dtype]);
 }
 
 static ssize_t csrow_edac_mode_show(struct device *dev,
@@ -191,7 +191,7 @@ static ssize_t csrow_edac_mode_show(struct device *dev,
 {
 	struct csrow_info *csrow = to_csrow(dev);
 
-	return sprintf(data, "%s\n", edac_caps[csrow->channels[0]->dimm->edac_mode]);
+	return sysfs_emit(data, "%s\n", edac_caps[csrow->channels[0]->dimm->edac_mode]);
 }
 
 /* show/store functions for DIMM Label attributes */
@@ -207,8 +207,7 @@ static ssize_t channel_dimm_label_show(struct device *dev,
 	if (!rank->dimm->label[0])
 		return 0;
 
-	return snprintf(data, sizeof(rank->dimm->label) + 1, "%s\n",
-			rank->dimm->label);
+	return sysfs_emit(data, "%s\n", rank->dimm->label);
 }
 
 static ssize_t channel_dimm_label_store(struct device *dev,
@@ -243,7 +242,7 @@ static ssize_t channel_ce_count_show(struct device *dev,
 	unsigned int chan = to_channel(mattr);
 	struct rank_info *rank = csrow->channels[chan];
 
-	return sprintf(data, "%u\n", rank->ce_count);
+	return sysfs_emit(data, "%u\n", rank->ce_count);
 }
 
 /* cwrow<id>/attribute files */
@@ -515,7 +514,7 @@ static ssize_t dimmdev_label_show(struct device *dev,
 	if (!dimm->label[0])
 		return 0;
 
-	return snprintf(data, sizeof(dimm->label) + 1, "%s\n", dimm->label);
+	return sysfs_emit(data, "%s\n", dimm->label);
 }
 
 static ssize_t dimmdev_label_store(struct device *dev,
@@ -546,7 +545,7 @@ static ssize_t dimmdev_size_show(struct device *dev,
 {
 	struct dimm_info *dimm = to_dimm(dev);
 
-	return sprintf(data, "%u\n", PAGES_TO_MiB(dimm->nr_pages));
+	return sysfs_emit(data, "%u\n", PAGES_TO_MiB(dimm->nr_pages));
 }
 
 static ssize_t dimmdev_mem_type_show(struct device *dev,
@@ -554,7 +553,7 @@ static ssize_t dimmdev_mem_type_show(struct device *dev,
 {
 	struct dimm_info *dimm = to_dimm(dev);
 
-	return sprintf(data, "%s\n", edac_mem_types[dimm->mtype]);
+	return sysfs_emit(data, "%s\n", edac_mem_types[dimm->mtype]);
 }
 
 static ssize_t dimmdev_dev_type_show(struct device *dev,
@@ -562,7 +561,7 @@ static ssize_t dimmdev_dev_type_show(struct device *dev,
 {
 	struct dimm_info *dimm = to_dimm(dev);
 
-	return sprintf(data, "%s\n", dev_types[dimm->dtype]);
+	return sysfs_emit(data, "%s\n", dev_types[dimm->dtype]);
 }
 
 static ssize_t dimmdev_edac_mode_show(struct device *dev,
@@ -571,7 +570,7 @@ static ssize_t dimmdev_edac_mode_show(struct device *dev,
 {
 	struct dimm_info *dimm = to_dimm(dev);
 
-	return sprintf(data, "%s\n", edac_caps[dimm->edac_mode]);
+	return sysfs_emit(data, "%s\n", edac_caps[dimm->edac_mode]);
 }
 
 static ssize_t dimmdev_ce_count_show(struct device *dev,
@@ -580,7 +579,7 @@ static ssize_t dimmdev_ce_count_show(struct device *dev,
 {
 	struct dimm_info *dimm = to_dimm(dev);
 
-	return sprintf(data, "%u\n", dimm->ce_count);
+	return sysfs_emit(data, "%u\n", dimm->ce_count);
 }
 
 static ssize_t dimmdev_ue_count_show(struct device *dev,
@@ -589,7 +588,7 @@ static ssize_t dimmdev_ue_count_show(struct device *dev,
 {
 	struct dimm_info *dimm = to_dimm(dev);
 
-	return sprintf(data, "%u\n", dimm->ue_count);
+	return sysfs_emit(data, "%u\n", dimm->ue_count);
 }
 
 /* dimm/rank attribute files */
@@ -758,7 +757,7 @@ static ssize_t mci_sdram_scrub_rate_show(struct device *dev,
 		return bandwidth;
 	}
 
-	return sprintf(data, "%d\n", bandwidth);
+	return sysfs_emit(data, "%d\n", bandwidth);
 }
 
 /* default attribute files for the MCI object */
@@ -768,7 +767,7 @@ static ssize_t mci_ue_count_show(struct device *dev,
 {
 	struct mem_ctl_info *mci = to_mci(dev);
 
-	return sprintf(data, "%u\n", mci->ue_mc);
+	return sysfs_emit(data, "%u\n", mci->ue_mc);
 }
 
 static ssize_t mci_ce_count_show(struct device *dev,
@@ -777,7 +776,7 @@ static ssize_t mci_ce_count_show(struct device *dev,
 {
 	struct mem_ctl_info *mci = to_mci(dev);
 
-	return sprintf(data, "%u\n", mci->ce_mc);
+	return sysfs_emit(data, "%u\n", mci->ce_mc);
 }
 
 static ssize_t mci_ce_noinfo_show(struct device *dev,
@@ -786,7 +785,7 @@ static ssize_t mci_ce_noinfo_show(struct device *dev,
 {
 	struct mem_ctl_info *mci = to_mci(dev);
 
-	return sprintf(data, "%u\n", mci->ce_noinfo_count);
+	return sysfs_emit(data, "%u\n", mci->ce_noinfo_count);
 }
 
 static ssize_t mci_ue_noinfo_show(struct device *dev,
@@ -795,7 +794,7 @@ static ssize_t mci_ue_noinfo_show(struct device *dev,
 {
 	struct mem_ctl_info *mci = to_mci(dev);
 
-	return sprintf(data, "%u\n", mci->ue_noinfo_count);
+	return sysfs_emit(data, "%u\n", mci->ue_noinfo_count);
 }
 
 static ssize_t mci_seconds_show(struct device *dev,
@@ -804,7 +803,7 @@ static ssize_t mci_seconds_show(struct device *dev,
 {
 	struct mem_ctl_info *mci = to_mci(dev);
 
-	return sprintf(data, "%ld\n", (jiffies - mci->start_time) / HZ);
+	return sysfs_emit(data, "%ld\n", (jiffies - mci->start_time) / HZ);
 }
 
 static ssize_t mci_ctl_name_show(struct device *dev,
@@ -813,7 +812,7 @@ static ssize_t mci_ctl_name_show(struct device *dev,
 {
 	struct mem_ctl_info *mci = to_mci(dev);
 
-	return sprintf(data, "%s\n", mci->ctl_name);
+	return sysfs_emit(data, "%s\n", mci->ctl_name);
 }
 
 static ssize_t mci_size_mb_show(struct device *dev,
@@ -833,7 +832,7 @@ static ssize_t mci_size_mb_show(struct device *dev,
 		}
 	}
 
-	return sprintf(data, "%u\n", PAGES_TO_MiB(total_pages));
+	return sysfs_emit(data, "%u\n", PAGES_TO_MiB(total_pages));
 }
 
 static ssize_t mci_max_location_show(struct device *dev,