Messages in this thread Patch in this message | | | From | <> | Subject | [PATCH 2/2] mtd: spi-nor: enable the debugfs for the partname and partid | Date | Thu, 29 Aug 2019 07:10:33 +0000 |
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From: Zhuohao Lee <zhuohao@chromium.org>
This patch adds spi_nor_debugfs_init() for the debugfs initialization. With this patch, we can read the partname and partid through the debugfs.
The output of new debugfs nodes on my device are: cat /sys/kernel/debug/mtd/mtd0/partid spi-nor:ef6017 cat /sys/kernel/debug/mtd/mtd0/partname w25q64dw
Signed-off-by: Zhuohao Lee <zhuohao@chromium.org> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> --- drivers/mtd/spi-nor/spi-nor.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index 79c8f1dd8c6b..6a2fff0598af 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -4767,6 +4767,16 @@ static int spi_nor_set_addr_width(struct spi_nor *nor) return 0; } +static void spi_nor_debugfs_init(struct spi_nor *nor, + const struct flash_info *info) +{ + struct mtd_info *mtd = &nor->mtd; + + mtd->dbg.partname = info->name; + mtd->dbg.partid = devm_kasprintf(nor->dev, GFP_KERNEL, "spi-nor:%*phN", + info->id_len, info->id); +} + static const struct flash_info *spi_nor_get_flash_info(struct spi_nor *nor, const char *name) { @@ -4847,6 +4857,8 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, nor->info = info; + spi_nor_debugfs_init(nor, info); + mutex_init(&nor->lock); /* -- 2.9.5
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