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Message-ID: <20241105152650.GA1472729@bhelgaas>
Date: Tue, 5 Nov 2024 09:26:50 -0600
From: Bjorn Helgaas <helgaas@...nel.org>
To: Thomas Weißschuh <linux@...ssschuh.net>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
Davidlohr Bueso <dave@...olabs.net>,
Jonathan Cameron <jonathan.cameron@...wei.com>,
Dave Jiang <dave.jiang@...el.com>,
Alison Schofield <alison.schofield@...el.com>,
Vishal Verma <vishal.l.verma@...el.com>,
Ira Weiny <ira.weiny@...el.com>,
Alex Deucher <alexander.deucher@....com>,
Christian König <christian.koenig@....com>,
Xinhui Pan <Xinhui.Pan@....com>, David Airlie <airlied@...il.com>,
Simona Vetter <simona@...ll.ch>,
Dennis Dalessandro <dennis.dalessandro@...nelisnetworks.com>,
Jason Gunthorpe <jgg@...pe.ca>, Leon Romanovsky <leon@...nel.org>,
Tudor Ambarus <tudor.ambarus@...aro.org>,
Pratyush Yadav <pratyush@...nel.org>,
Michael Walle <mwalle@...nel.org>,
Miquel Raynal <miquel.raynal@...tlin.com>,
Richard Weinberger <richard@....at>,
Vignesh Raghavendra <vigneshr@...com>,
Naveen Krishna Chatradhi <naveenkrishna.chatradhi@....com>,
Carlos Bilbao <carlos.bilbao.osdev@...il.com>,
Hans de Goede <hdegoede@...hat.com>,
Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
"David E. Box" <david.e.box@...ux.intel.com>,
"James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
"Martin K. Petersen" <martin.petersen@...cle.com>,
Richard Henderson <richard.henderson@...aro.org>,
Matt Turner <mattst88@...il.com>,
Frederic Barrat <fbarrat@...ux.ibm.com>,
Andrew Donnellan <ajd@...ux.ibm.com>, Arnd Bergmann <arnd@...db.de>,
Logan Gunthorpe <logang@...tatee.com>,
"K. Y. Srinivasan" <kys@...rosoft.com>,
Haiyang Zhang <haiyangz@...rosoft.com>,
Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
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, linux-rdma@...r.kernel.org,
linux-mtd@...ts.infradead.org, platform-driver-x86@...r.kernel.org,
linux-scsi@...r.kernel.org, linux-usb@...r.kernel.org,
linux-alpha@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
linux-hyperv@...r.kernel.org
Subject: Re: [PATCH v2 05/10] sysfs: treewide: constify attribute callback of
bin_is_visible()
On Sun, Nov 03, 2024 at 05:03:34PM +0000, Thomas Weißschuh wrote:
> The is_bin_visible() callbacks should not modify the struct
> bin_attribute passed as argument.
> Enforce this by marking the argument as const.
>
> As there are not many callback implementers perform this change
> throughout the tree at once.
>
> Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
Acked-by: Bjorn Helgaas <bhelgaas@...gle.com> # drivers/pci
> ---
> drivers/cxl/port.c | 2 +-
> drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 2 +-
> drivers/infiniband/hw/qib/qib_sysfs.c | 2 +-
> drivers/mtd/spi-nor/sysfs.c | 2 +-
> drivers/nvmem/core.c | 3 ++-
> drivers/pci/pci-sysfs.c | 2 +-
> drivers/pci/vpd.c | 2 +-
> drivers/platform/x86/amd/hsmp.c | 2 +-
> drivers/platform/x86/intel/sdsi.c | 2 +-
> drivers/scsi/scsi_sysfs.c | 2 +-
> drivers/usb/core/sysfs.c | 2 +-
> include/linux/sysfs.h | 30 +++++++++++++++---------------
> 12 files changed, 27 insertions(+), 26 deletions(-)
>
> diff --git a/drivers/cxl/port.c b/drivers/cxl/port.c
> index 9dc394295e1fcd1610813837b2f515b66995eb25..24041cf85cfbe6c54c467ac325e48c775562b938 100644
> --- a/drivers/cxl/port.c
> +++ b/drivers/cxl/port.c
> @@ -173,7 +173,7 @@ static ssize_t CDAT_read(struct file *filp, struct kobject *kobj,
> static BIN_ATTR_ADMIN_RO(CDAT, 0);
>
> static umode_t cxl_port_bin_attr_is_visible(struct kobject *kobj,
> - struct bin_attribute *attr, int i)
> + const struct bin_attribute *attr, int i)
> {
> struct device *dev = kobj_to_dev(kobj);
> struct cxl_port *port = to_cxl_port(dev);
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> index 0b28b2cf1517d130da01989df70b9dff6433edc4..c1c329eb920b52af100a93bdf00df450e25608c4 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
> @@ -3999,7 +3999,7 @@ static umode_t amdgpu_flash_attr_is_visible(struct kobject *kobj, struct attribu
> }
>
> static umode_t amdgpu_bin_flash_attr_is_visible(struct kobject *kobj,
> - struct bin_attribute *attr,
> + const struct bin_attribute *attr,
> int idx)
> {
> struct device *dev = kobj_to_dev(kobj);
> diff --git a/drivers/infiniband/hw/qib/qib_sysfs.c b/drivers/infiniband/hw/qib/qib_sysfs.c
> index 53ec7510e4ebfb144e79884ca7dd7d0c873bd8a7..ba2cd68b53e6c240f1afc65c64012c75ccf488e0 100644
> --- a/drivers/infiniband/hw/qib/qib_sysfs.c
> +++ b/drivers/infiniband/hw/qib/qib_sysfs.c
> @@ -283,7 +283,7 @@ static struct bin_attribute *port_ccmgta_attributes[] = {
> };
>
> static umode_t qib_ccmgta_is_bin_visible(struct kobject *kobj,
> - struct bin_attribute *attr, int n)
> + const struct bin_attribute *attr, int n)
> {
> struct qib_pportdata *ppd = qib_get_pportdata_kobj(kobj);
>
> diff --git a/drivers/mtd/spi-nor/sysfs.c b/drivers/mtd/spi-nor/sysfs.c
> index 96064e4babf01f6950c81586764386e7671cbf97..5e9eb268073d18e0a46089000f18a3200b4bf13d 100644
> --- a/drivers/mtd/spi-nor/sysfs.c
> +++ b/drivers/mtd/spi-nor/sysfs.c
> @@ -87,7 +87,7 @@ static umode_t spi_nor_sysfs_is_visible(struct kobject *kobj,
> }
>
> static umode_t spi_nor_sysfs_is_bin_visible(struct kobject *kobj,
> - struct bin_attribute *attr, int n)
> + const struct bin_attribute *attr, int n)
> {
> struct spi_device *spi = to_spi_device(kobj_to_dev(kobj));
> struct spi_mem *spimem = spi_get_drvdata(spi);
> diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
> index 63370c76394ee9b8d514da074779617cef67c311..73e44d724f90f4cd8fe8cafb9fa0c0fb23078e61 100644
> --- a/drivers/nvmem/core.c
> +++ b/drivers/nvmem/core.c
> @@ -298,7 +298,8 @@ static umode_t nvmem_bin_attr_get_umode(struct nvmem_device *nvmem)
> }
>
> static umode_t nvmem_bin_attr_is_visible(struct kobject *kobj,
> - struct bin_attribute *attr, int i)
> + const struct bin_attribute *attr,
> + int i)
> {
> struct device *dev = kobj_to_dev(kobj);
> struct nvmem_device *nvmem = to_nvmem_device(dev);
> diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
> index 040f01b2b999175e8d98b05851edc078bbabbe0d..13912940ed2bb66c0086e5bea9a3cb6417ac14dd 100644
> --- a/drivers/pci/pci-sysfs.c
> +++ b/drivers/pci/pci-sysfs.c
> @@ -1326,7 +1326,7 @@ static struct bin_attribute *pci_dev_rom_attrs[] = {
> };
>
> static umode_t pci_dev_rom_attr_is_visible(struct kobject *kobj,
> - struct bin_attribute *a, int n)
> + const struct bin_attribute *a, int n)
> {
> struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
>
> diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c
> index e4300f5f304f3ca55a657fd25a1fa5ed919737a7..a469bcbc0da7f7677485c7f999f8dfb58b8ae8a3 100644
> --- a/drivers/pci/vpd.c
> +++ b/drivers/pci/vpd.c
> @@ -325,7 +325,7 @@ static struct bin_attribute *vpd_attrs[] = {
> };
>
> static umode_t vpd_attr_is_visible(struct kobject *kobj,
> - struct bin_attribute *a, int n)
> + const struct bin_attribute *a, int n)
> {
> struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj));
>
> diff --git a/drivers/platform/x86/amd/hsmp.c b/drivers/platform/x86/amd/hsmp.c
> index 8fcf38eed7f00ee01aade6e3e55e20402458d5aa..8f00850c139fa8d419bc1c140c1832bf84b2c3bd 100644
> --- a/drivers/platform/x86/amd/hsmp.c
> +++ b/drivers/platform/x86/amd/hsmp.c
> @@ -620,7 +620,7 @@ static int hsmp_get_tbl_dram_base(u16 sock_ind)
> }
>
> static umode_t hsmp_is_sock_attr_visible(struct kobject *kobj,
> - struct bin_attribute *battr, int id)
> + const struct bin_attribute *battr, int id)
> {
> if (plat_dev.proto_ver == HSMP_PROTO_VER6)
> return battr->attr.mode;
> diff --git a/drivers/platform/x86/intel/sdsi.c b/drivers/platform/x86/intel/sdsi.c
> index 9d137621f0e6e7a23be0e0bbc6175c51c403169f..33f33b1070fdc949c1373251c3bca4234d9da119 100644
> --- a/drivers/platform/x86/intel/sdsi.c
> +++ b/drivers/platform/x86/intel/sdsi.c
> @@ -541,7 +541,7 @@ static struct bin_attribute *sdsi_bin_attrs[] = {
> };
>
> static umode_t
> -sdsi_battr_is_visible(struct kobject *kobj, struct bin_attribute *attr, int n)
> +sdsi_battr_is_visible(struct kobject *kobj, const struct bin_attribute *attr, int n)
> {
> struct device *dev = kobj_to_dev(kobj);
> struct sdsi_priv *priv = dev_get_drvdata(dev);
> diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
> index 32f94db6d6bf5d2bd289c1a121da7ffc6a7cb2ff..f3a1ecb42128a2b221ca5c362e041eb59dba0f20 100644
> --- a/drivers/scsi/scsi_sysfs.c
> +++ b/drivers/scsi/scsi_sysfs.c
> @@ -1274,7 +1274,7 @@ static umode_t scsi_sdev_attr_is_visible(struct kobject *kobj,
> }
>
> static umode_t scsi_sdev_bin_attr_is_visible(struct kobject *kobj,
> - struct bin_attribute *attr, int i)
> + const struct bin_attribute *attr, int i)
> {
> struct device *dev = kobj_to_dev(kobj);
> struct scsi_device *sdev = to_scsi_device(dev);
> diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
> index 61b6d978892c799e213018bed22d9fb12a19d429..b4cba23831acd2d7d395b9f7683cd3ee3a8623c8 100644
> --- a/drivers/usb/core/sysfs.c
> +++ b/drivers/usb/core/sysfs.c
> @@ -925,7 +925,7 @@ static struct bin_attribute *dev_bin_attrs[] = {
> };
>
> static umode_t dev_bin_attrs_are_visible(struct kobject *kobj,
> - struct bin_attribute *a, int n)
> + const struct bin_attribute *a, int n)
> {
> struct device *dev = kobj_to_dev(kobj);
> struct usb_device *udev = to_usb_device(dev);
> diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
> index 4746cccb95898b24df6f53de9421ea7649b5568f..d1b22d56198b55ee39fe4c4fc994f5b753641992 100644
> --- a/include/linux/sysfs.h
> +++ b/include/linux/sysfs.h
> @@ -101,7 +101,7 @@ struct attribute_group {
> umode_t (*is_visible)(struct kobject *,
> struct attribute *, int);
> umode_t (*is_bin_visible)(struct kobject *,
> - struct bin_attribute *, int);
> + const struct bin_attribute *, int);
> size_t (*bin_size)(struct kobject *,
> const struct bin_attribute *,
> int);
> @@ -199,22 +199,22 @@ struct attribute_group {
> * attributes, the group visibility is determined by the function
> * specified to is_visible() not is_bin_visible()
> */
> -#define DEFINE_SYSFS_BIN_GROUP_VISIBLE(name) \
> - static inline umode_t sysfs_group_visible_##name( \
> - struct kobject *kobj, struct bin_attribute *attr, int n) \
> - { \
> - if (n == 0 && !name##_group_visible(kobj)) \
> - return SYSFS_GROUP_INVISIBLE; \
> - return name##_attr_visible(kobj, attr, n); \
> +#define DEFINE_SYSFS_BIN_GROUP_VISIBLE(name) \
> + static inline umode_t sysfs_group_visible_##name( \
> + struct kobject *kobj, const struct bin_attribute *attr, int n) \
> + { \
> + if (n == 0 && !name##_group_visible(kobj)) \
> + return SYSFS_GROUP_INVISIBLE; \
> + return name##_attr_visible(kobj, attr, n); \
> }
>
> -#define DEFINE_SIMPLE_SYSFS_BIN_GROUP_VISIBLE(name) \
> - static inline umode_t sysfs_group_visible_##name( \
> - struct kobject *kobj, struct bin_attribute *a, int n) \
> - { \
> - if (n == 0 && !name##_group_visible(kobj)) \
> - return SYSFS_GROUP_INVISIBLE; \
> - return a->mode; \
> +#define DEFINE_SIMPLE_SYSFS_BIN_GROUP_VISIBLE(name) \
> + static inline umode_t sysfs_group_visible_##name( \
> + struct kobject *kobj, const struct bin_attribute *a, int n) \
> + { \
> + if (n == 0 && !name##_group_visible(kobj)) \
> + return SYSFS_GROUP_INVISIBLE; \
> + return a->mode; \
> }
>
> #define SYSFS_GROUP_VISIBLE(fn) sysfs_group_visible_##fn
>
> --
> 2.47.0
>
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