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To: Greg KH Cc: Michael Zaidman , Jiri Kosina , Benjamin Tissoires , linux-i2c@vger.kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, skhan@linuxfoundation.org, linux-kernel-mentees@lists.linux.dev References: <20250923144926.307315-1-bhanuseshukumar@gmail.com> <2025092316-pasta-parachute-737e@gregkh> Content-Language: en-US From: bhanuseshukumar In-Reply-To: <2025092316-pasta-parachute-737e@gregkh> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 23/09/25 20:26, Greg KH wrote: > On Tue, Sep 23, 2025 at 08:19:26PM +0530, Bhanu Seshu Kumar Valluri wrote: >> Inline with sysfs documentation, sysfs_emit is used in show function >> to write formatted data into user buffer. sysfs_emit is already PAGE_SIZE >> aware. >> >> Signed-off-by: Bhanu Seshu Kumar Valluri >> --- >> Note: Patch is compile tested and verified with checkpatch. >> >> drivers/hid/hid-ft260.c | 4 ++-- >> 1 file changed, 2 insertions(+), 2 deletions(-) >> >> diff --git a/drivers/hid/hid-ft260.c b/drivers/hid/hid-ft260.c >> index 333341e80b0e..8677bea46bea 100644 >> --- a/drivers/hid/hid-ft260.c >> +++ b/drivers/hid/hid-ft260.c >> @@ -826,7 +826,7 @@ static int ft260_byte_show(struct hid_device *hdev, int id, u8 *cfg, int len, >> if (ret < 0) >> return ret; >> >> - return scnprintf(buf, PAGE_SIZE, "%d\n", *field); >> + return sysfs_emit(buf, "%d\n", *field); >> } >> >> static int ft260_word_show(struct hid_device *hdev, int id, u8 *cfg, int len, >> @@ -838,7 +838,7 @@ static int ft260_word_show(struct hid_device *hdev, int id, u8 *cfg, int len, >> if (ret < 0) >> return ret; >> >> - return scnprintf(buf, PAGE_SIZE, "%d\n", le16_to_cpu(*field)); >> + return sysfs_emit(buf, "%d\n", le16_to_cpu(*field)); > > There's no need to change existing users in the kernel for stuff like > this, only try to do this for new sysfs files. We've had too many bugs > where "simple" changes like this cause problems (recently in the USB > core for example.) > > thanks, > > greg k-h OK. Thanks for the prompt feedback on this.