linux-kernel - [PATCH] Staging: atomisp: Use sysfs_emit() instead of sprintf() where appropriate

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Date:   Thu, 13 May 2021 11:46:50 +0800
From:   Nguyen Dinh Phi <phind.uet@...il.com>
To:     mchehab@...nel.org, sakari.ailus@...ux.intel.com,
        gregkh@...uxfoundation.org, andriy.shevchenko@...ux.intel.com
Cc:     linux-media@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: [PATCH] Staging: atomisp: Use sysfs_emit() instead of sprintf() where appropriate

sysfs_emit() is preferred over raw sprintf() for sysfs attributes since it
knows about the sysfs buffer specifics and has some built-in sanity checks.

Signed-off-by: Nguyen Dinh Phi <phind.uet@...il.com>
---
 drivers/staging/media/atomisp/pci/atomisp_drvfs.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/atomisp_drvfs.c b/drivers/staging/media/atomisp/pci/atomisp_drvfs.c
index f670faf978e6..dcb571f515a7 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_drvfs.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_drvfs.c
@@ -96,7 +96,7 @@ static inline int iunit_dump_dbgopt(struct atomisp_device *isp,
 static ssize_t iunit_dbglvl_show(struct device_driver *drv, char *buf)
 {
 	iunit_debug.dbglvl = dbg_level;
-	return sprintf(buf, "dtrace level:%u\n", iunit_debug.dbglvl);
+	return sysfs_emit(buf, "dtrace level:%u\n", iunit_debug.dbglvl);
 }
 
 static ssize_t iunit_dbglvl_store(struct device_driver *drv, const char *buf,
@@ -115,7 +115,7 @@ static ssize_t iunit_dbglvl_store(struct device_driver *drv, const char *buf,
 static ssize_t iunit_dbgfun_show(struct device_driver *drv, char *buf)
 {
 	iunit_debug.dbgfun = atomisp_get_css_dbgfunc();
-	return sprintf(buf, "dbgfun opt:%u\n", iunit_debug.dbgfun);
+	return sysfs_emit(buf, "dbgfun opt:%u\n", iunit_debug.dbgfun);
 }
 
 static ssize_t iunit_dbgfun_store(struct device_driver *drv, const char *buf,
@@ -139,7 +139,7 @@ static ssize_t iunit_dbgfun_store(struct device_driver *drv, const char *buf,
 
 static ssize_t iunit_dbgopt_show(struct device_driver *drv, char *buf)
 {
-	return sprintf(buf, "option:0x%x\n", iunit_debug.dbgopt);
+	return sysfs_emit(buf, "option:0x%x\n", iunit_debug.dbgopt);
 }
 
 static ssize_t iunit_dbgopt_store(struct device_driver *drv, const char *buf,
-- 
2.25.1