[PATCH] staging: greybus: arche: use sysfs_emit() instead of sprintf()

[Ruslan Valiyev <linuxoid@gmail.com>]

Replace sprintf() with sysfs_emit() in state_show() sysfs attribute
callbacks in arche-platform.c and arche-apb-ctrl.c.

sysfs_emit() is preferred over sprintf() in sysfs show functions
because it is aware of the PAGE_SIZE buffer limit, preventing
potential buffer overflows. This addresses checkpatch warnings
about the use of sprintf() in sysfs show callbacks.

Signed-off-by: Ruslan Valiyev <linuxoid@gmail.com>
---
 drivers/staging/greybus/arche-apb-ctrl.c | 10 +++++-----
 drivers/staging/greybus/arche-platform.c | 10 +++++-----
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/staging/greybus/arche-apb-ctrl.c b/drivers/staging/greybus/arche-apb-ctrl.c
index 33f26a65f..19a6e59b6 100644
--- a/drivers/staging/greybus/arche-apb-ctrl.c
+++ b/drivers/staging/greybus/arche-apb-ctrl.c
@@ -300,16 +300,16 @@ static ssize_t state_show(struct device *dev,
 
 	switch (apb->state) {
 	case ARCHE_PLATFORM_STATE_OFF:
-		return sprintf(buf, "off%s\n",
+		return sysfs_emit(buf, "off%s\n",
 				apb->init_disabled ? ",disabled" : "");
 	case ARCHE_PLATFORM_STATE_ACTIVE:
-		return sprintf(buf, "active\n");
+		return sysfs_emit(buf, "active\n");
 	case ARCHE_PLATFORM_STATE_STANDBY:
-		return sprintf(buf, "standby\n");
+		return sysfs_emit(buf, "standby\n");
 	case ARCHE_PLATFORM_STATE_FW_FLASHING:
-		return sprintf(buf, "fw_flashing\n");
+		return sysfs_emit(buf, "fw_flashing\n");
 	default:
-		return sprintf(buf, "unknown state\n");
+		return sysfs_emit(buf, "unknown state\n");
 	}
 }
 
diff --git a/drivers/staging/greybus/arche-platform.c b/drivers/staging/greybus/arche-platform.c
index f669a7e2e..de5de59ea 100644
--- a/drivers/staging/greybus/arche-platform.c
+++ b/drivers/staging/greybus/arche-platform.c
@@ -374,15 +374,15 @@ static ssize_t state_show(struct device *dev,
 
 	switch (arche_pdata->state) {
 	case ARCHE_PLATFORM_STATE_OFF:
-		return sprintf(buf, "off\n");
+		return sysfs_emit(buf, "off\n");
 	case ARCHE_PLATFORM_STATE_ACTIVE:
-		return sprintf(buf, "active\n");
+		return sysfs_emit(buf, "active\n");
 	case ARCHE_PLATFORM_STATE_STANDBY:
-		return sprintf(buf, "standby\n");
+		return sysfs_emit(buf, "standby\n");
 	case ARCHE_PLATFORM_STATE_FW_FLASHING:
-		return sprintf(buf, "fw_flashing\n");
+		return sysfs_emit(buf, "fw_flashing\n");
 	default:
-		return sprintf(buf, "unknown state\n");
+		return sysfs_emit(buf, "unknown state\n");
 	}
 }
 
-- 
2.43.0