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[v3,01/14] PCI: Use sysfs_emit() and sysfs_emit_at() in "show" functions

Message ID 20210518034109.158450-1-kw@linux.com (mailing list archive)
State Superseded
Delegated to: Bjorn Helgaas
Headers show
Series [v3,01/14] PCI: Use sysfs_emit() and sysfs_emit_at() in "show" functions | expand

Commit Message

Krzysztof Wilczyński May 18, 2021, 3:40 a.m. UTC
The sysfs_emit() and sysfs_emit_at() functions were introduced to make
it less ambiguous which function is preferred when writing to the output
buffer in a device attribute's "show" callback [1].

Convert the PCI sysfs object "show" functions from sprintf(), snprintf()
and scnprintf() to sysfs_emit() and sysfs_emit_at() accordingly, as the
latter is aware of the PAGE_SIZE buffer and correctly returns the number
of bytes written into the buffer.

No functional change intended.

[1] Documentation/filesystems/sysfs.rst

Related to:
  commit ad025f8e46f3 ("PCI/sysfs: Use sysfs_emit() and sysfs_emit_at() in "show" functions")

Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
---
Changes in v2:
  None.
Changes in v3:
  Added Logan Gunthorpe's "Reviewed-by".

 drivers/pci/pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index b717680377a9..5ed316ea5831 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -6439,7 +6439,7 @@  static ssize_t resource_alignment_show(struct bus_type *bus, char *buf)
 
 	spin_lock(&resource_alignment_lock);
 	if (resource_alignment_param)
-		count = scnprintf(buf, PAGE_SIZE, "%s", resource_alignment_param);
+		count = sysfs_emit(buf, "%s", resource_alignment_param);
 	spin_unlock(&resource_alignment_lock);
 
 	/*