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Re: [PATCH] xen/pciback: use sysfs_emit_at() instead of scnprintf()
- To: tang.dongxing@xxxxxxxxxx, jgross@xxxxxxxx
- From: Jiri Slaby <jirislaby@xxxxxxxxxx>
- Date: Mon, 17 Mar 2025 09:50:47 +0100
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- Cc: sstabellini@xxxxxxxxxx, oleksandr_tyshchenko@xxxxxxxx, jiqian.chen@xxxxxxx, ray.huang@xxxxxxx, jeff.johnson@xxxxxxxxxxxxxxxx, minhuadotchen@xxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, ye.xingchen@xxxxxxxxxx, yang.guang5@xxxxxxxxxx, yang.yang29@xxxxxxxxxx, xu.xin16@xxxxxxxxxx
- Delivery-date: Mon, 17 Mar 2025 08:50:59 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 17. 03. 25, 8:16, tang.dongxing@xxxxxxxxxx wrote:
From: TangDongxing <tang.dongxing@xxxxxxxxxx>
Follow the advice in Documentation/filesystems/sysfs.rst:
show() should only use sysfs_emit() or sysfs_emit_at() when formatting
the value to be returned to user space.
Signed-off-by: TangDongxing <tang.dongxing@xxxxxxxxxx>
---
drivers/xen/xen-pciback/pci_stub.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/xen/xen-pciback/pci_stub.c
b/drivers/xen/xen-pciback/pci_stub.c
index b616b7768c3b..a0782a74ed34 100644
--- a/drivers/xen/xen-pciback/pci_stub.c
+++ b/drivers/xen/xen-pciback/pci_stub.c
@@ -1281,7 +1281,7 @@ static ssize_t slots_show(struct device_driver *drv, char
*buf)
if (count >= PAGE_SIZE)
break;
- count += scnprintf(buf + count, PAGE_SIZE - count,
+ count += sysfs_emit_at(buf, count,
This is wrong too [1].
[1]
https://lore.kernel.org/all/9c552d9a-2d46-4069-a9c4-35fab857bfc3@xxxxxxxxxx/
regards,
--
js
suse labs
|
