diff mbox series

[v2,07/14] PCI/ASPM: Use sysfs_emit() and sysfs_emit_at() in "show" functions

Message ID 20210515052434.1413236-7-kw@linux.com
State Not Applicable
Headers show
Series [v2,01/14] PCI: Use sysfs_emit() and sysfs_emit_at() in "show" functions | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch success Successfully applied on branch powerpc/merge (b68d19e1abdbafef9481c7c0b0bcaff34d7af17d)
snowpatch_ozlabs/checkpatch warning total: 1 errors, 1 warnings, 0 checks, 16 lines checked
snowpatch_ozlabs/needsstable success Patch has no Fixes tags

Commit Message

Krzysztof Wilczyński May 15, 2021, 5:24 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>
---
 drivers/pci/pcie/aspm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index ac0557a305af..013a47f587ce 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -1208,7 +1208,7 @@  static ssize_t aspm_attr_show_common(struct device *dev,
 	struct pci_dev *pdev = to_pci_dev(dev);
 	struct pcie_link_state *link = pcie_aspm_get_link(pdev);
 
-	return sprintf(buf, "%d\n", (link->aspm_enabled & state) ? 1 : 0);
+	return sysfs_emit(buf, "%d\n", (link->aspm_enabled & state) ? 1 : 0);
 }
 
 static ssize_t aspm_attr_store_common(struct device *dev,
@@ -1265,7 +1265,7 @@  static ssize_t clkpm_show(struct device *dev,
 	struct pci_dev *pdev = to_pci_dev(dev);
 	struct pcie_link_state *link = pcie_aspm_get_link(pdev);
 
-	return sprintf(buf, "%d\n", link->clkpm_enabled);
+	return sysfs_emit(buf, "%d\n", link->clkpm_enabled);
 }
 
 static ssize_t clkpm_store(struct device *dev,