Commit 0d9270f2 authored by Michael Walle's avatar Michael Walle Committed by Tudor Ambarus
Browse files

mtd: spi-nor: sysfs: hide manufacturer if it is not set 



The manufacturer may be optional when pure SFDP flashes are supported.
Hide the sysfs property if no manufacturer is set.

Signed-off-by: default avatarMichael Walle <michael@walle.cc>
Signed-off-by: default avatarTudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: default avatarTakahiro Kuwano <Takahiro.Kuwano@infineon.com>
Link: https://lore.kernel.org/r/20220810220654.1297699-3-michael@walle.cc
parent 7d388551

Documentation/ABI/testing/sysfs-bus-spi-devices-spi-nor

+3 −0
Original line number Diff line number Diff line
@@ -15,6 +15,9 @@ KernelVersion: 5.14 
Contact:	linux-mtd@lists.infradead.org

Description:	(RO) Manufacturer of the SPI NOR flash.



		The attribute is not present if the flash device isn't

		known to the kernel and is only probed by its SFDP

		tables.



What:		/sys/bus/spi/devices/.../spi-nor/partname

Date:		April 2021

drivers/mtd/spi-nor/sysfs.c

+2 −0
Original line number Diff line number Diff line
@@ -74,6 +74,8 @@ static umode_t spi_nor_sysfs_is_visible(struct kobject *kobj, 
	struct spi_mem *spimem = spi_get_drvdata(spi);

	struct spi_nor *nor = spi_mem_get_drvdata(spimem);



	if (attr == &dev_attr_manufacturer.attr && !nor->manufacturer)

		return 0;

	if (attr == &dev_attr_jedec_id.attr && !nor->info->id_len)

		return 0;