From ef262847122b7589d0a1056ab79c688645e2da21 Mon Sep 17 00:00:00 2001 From: Tudor Ambarus Date: Thu, 19 Dec 2024 09:20:04 +0000 Subject: [PATCH] mtd: spi-nor: extend description of size member of struct flash_info We use the size as an indicator whether to parse SFDP or not. We don't introduce a dedicated member for SFDP parsing because we'd like to keep the struct size at a minimum, as it's used for every flash declaration. Ideally we won't have flash entries at all, but there are still flash parameters that aren't defined by SFDP, thus we need to statically specify them. Signed-off-by: Tudor Ambarus Reviewed-by: Miquel Raynal Reviewed-by: Michael Walle Signed-off-by: Pratyush Yadav Link: https://lore.kernel.org/r/20241219-spi-nor-flash-info-size-desc-v1-1-6b53cf011027@linaro.org --- drivers/mtd/spi-nor/core.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h index 5c33740ed7f5f..ceff412f7d65a 100644 --- a/drivers/mtd/spi-nor/core.h +++ b/drivers/mtd/spi-nor/core.h @@ -448,7 +448,11 @@ struct spi_nor_id { * @id: pointer to struct spi_nor_id or NULL, which means "no ID" (mostly * older chips). * @name: (obsolete) the name of the flash. Do not set it for new additions. - * @size: the size of the flash in bytes. + * @size: the size of the flash in bytes. The flash size is one + * property parsed by the SFDP. We use it as an indicator + * whether we need SFDP parsing for a particular flash. + * I.e. non-legacy flash entries in flash_info will have + * a size of zero iff SFDP should be used. * @sector_size: (optional) the size listed here is what works with * SPINOR_OP_SE, which isn't necessarily called a "sector" by * the vendor. Defaults to 64k.