From: "Krzysztof Wilczyński" <kw@linux.com>
To: Bjorn Helgaas <bhelgaas@google.com>
Cc: Logan Gunthorpe <logang@deltatee.com>,
Joe Perches <joe@perches.com>,
"Oliver O'Halloran" <oohall@gmail.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Tyrel Datwyler <tyreld@linux.ibm.com>,
Russell Currey <ruscur@russell.cc>,
Kurt Schwemmer <kurt.schwemmer@microsemi.com>,
Vidya Sagar <vidyas@nvidia.com>,
Xiongfeng Wang <wangxiongfeng2@huawei.com>,
linux-pci@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v2 07/14] PCI/ASPM: Use sysfs_emit() and sysfs_emit_at() in "show" functions
Date: Sat, 15 May 2021 05:24:27 +0000 [thread overview]
Message-ID: <20210515052434.1413236-7-kw@linux.com> (raw)
In-Reply-To: <20210515052434.1413236-1-kw@linux.com>
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 --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,
--
2.31.1
next prev parent reply other threads:[~2021-05-15 5:24 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-15 5:24 [PATCH v2 01/14] PCI: Use sysfs_emit() and sysfs_emit_at() in "show" functions Krzysztof Wilczyński
2021-05-15 5:24 ` [PATCH v2 02/14] PCI/AER: " Krzysztof Wilczyński
2021-05-15 5:24 ` [PATCH v2 03/14] PCI: " Krzysztof Wilczyński
2021-05-15 5:24 ` [PATCH v2 04/14] PCI/MSI: " Krzysztof Wilczyński
2021-05-15 5:46 ` Joe Perches
2021-05-15 6:01 ` Krzysztof Wilczyński
2021-05-15 5:24 ` [PATCH v2 05/14] PCI/IOV: " Krzysztof Wilczyński
2021-05-15 5:24 ` [PATCH v2 06/14] PCI/P2PDMA: " Krzysztof Wilczyński
2021-05-15 5:24 ` Krzysztof Wilczyński [this message]
2021-05-15 5:24 ` [PATCH v2 08/14] PCI: switchtec: " Krzysztof Wilczyński
2021-05-15 5:24 ` [PATCH v2 09/14] PCI: rpadlpar: " Krzysztof Wilczyński
2021-05-15 5:24 ` [PATCH v2 10/14] PCI: hotplug: " Krzysztof Wilczyński
2021-05-15 5:24 ` [PATCH v2 11/14] PCI: shpchp: " Krzysztof Wilczyński
2021-05-15 5:24 ` [PATCH v2 12/14] PCI: Fix trailing newline handling of resource_alignment_param Krzysztof Wilczyński
2021-05-15 5:24 ` [PATCH v2 13/14] PCI/sysfs: Add missing trailing newline to devspec_show() Krzysztof Wilczyński
2021-05-15 5:24 ` [PATCH v2 14/14] PCI/sysfs: Only show value when driver_override is not NULL Krzysztof Wilczyński
2021-05-15 5:36 ` [PATCH v2 01/14] PCI: Use sysfs_emit() and sysfs_emit_at() in "show" functions Krzysztof Wilczyński
2021-05-15 5:43 ` Joe Perches
2021-05-15 5:59 ` Krzysztof Wilczyński
2021-05-17 15:48 ` Logan Gunthorpe
2021-05-17 17:44 ` Krzysztof Wilczyński
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