linux-kernel - [PATCH v2 04/10] nvmem: core: calculate bin_attribute size through bin

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Message-Id: <20241103-sysfs-const-bin_attr-v2-4-71110628844c@weissschuh.net>
Date: Sun, 03 Nov 2024 17:03:33 +0000
From: Thomas Weißschuh <linux@...ssschuh.net>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Rafael J. Wysocki" <rafael@...nel.org>, 
 Bjorn Helgaas <bhelgaas@...gle.com>, 
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Cc: Dan Williams <dan.j.williams@...el.com>, linux-kernel@...r.kernel.org, 
 linux-pci@...r.kernel.org, linux-cxl@...r.kernel.org, 
 amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org, 
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 linux-usb@...r.kernel.org, linux-alpha@...r.kernel.org, 
 linuxppc-dev@...ts.ozlabs.org, linux-hyperv@...r.kernel.org, 
 Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH v2 04/10] nvmem: core: calculate bin_attribute size through
 bin_size()

Stop abusing the is_bin_visible() callback to calculate the attribute
size. Instead use the new, dedicated bin_size() one.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 drivers/nvmem/core.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 33ffa2aa4c1152398ec66b8dd7b30384c5346a6e..63370c76394ee9b8d514da074779617cef67c311 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -303,11 +303,19 @@ static umode_t nvmem_bin_attr_is_visible(struct kobject *kobj,
 	struct device *dev = kobj_to_dev(kobj);
 	struct nvmem_device *nvmem = to_nvmem_device(dev);

-	attr->size = nvmem->size;
-
 	return nvmem_bin_attr_get_umode(nvmem);
 }

+static size_t nvmem_bin_attr_size(struct kobject *kobj,
+				  const struct bin_attribute *attr,
+				  int i)
+{
+	struct device *dev = kobj_to_dev(kobj);
+	struct nvmem_device *nvmem = to_nvmem_device(dev);
+
+	return nvmem->size;
+}
+
 static umode_t nvmem_attr_is_visible(struct kobject *kobj,
 				     struct attribute *attr, int i)
 {
@@ -383,6 +391,7 @@ static const struct attribute_group nvmem_bin_group = {
 	.bin_attrs	= nvmem_bin_attributes,
 	.attrs		= nvmem_attrs,
 	.is_bin_visible = nvmem_bin_attr_is_visible,
+	.bin_size	= nvmem_bin_attr_size,
 	.is_visible	= nvmem_attr_is_visible,
 };

-- 
2.47.0