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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2020-12-11 10:40:35 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2020-12-11 10:57:41 +0100 |
| commit | 8c3ba6f91c4dd41df066854824ee231d556e8358 (patch) | |
| tree | cbf1f559e3491d2345e9bf2e6ce7785269534c36 | |
| parent | 43317598a17493ec9e80e7a501c7e0933bca25e4 (diff) | |
| download | barebox-8c3ba6f91c4dd41df066854824ee231d556e8358.tar.gz barebox-8c3ba6f91c4dd41df066854824ee231d556e8358.tar.xz | |
mtd: spi-nor: Make write support optional
Write support is optional with the CONFIG_MTD_WRITE option. Bail out
early in the write functions to save some binary space.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | drivers/mtd/spi-nor/spi-nor.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index 350b82a6be..bd748ff5b4 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -470,6 +470,9 @@ static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr) uint32_t rem; int ret; + if (!IS_ENABLED(CONFIG_MTD_WRITE)) + return -ENOSYS; + dev_dbg(nor->dev, "at 0x%llx, len %lld\n", (long long)instr->addr, (long long)instr->len); @@ -928,6 +931,9 @@ static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, size_t actual; int ret; + if (!IS_ENABLED(CONFIG_MTD_WRITE)) + return -ENOSYS; + dev_dbg(nor->dev, "to 0x%08x, len %zd\n", (u32)to, len); ret = spi_nor_lock_and_prep(nor, SPI_NOR_OPS_WRITE); @@ -1000,6 +1006,9 @@ static int spi_nor_write(struct mtd_info *mtd, loff_t to, size_t len, size_t retval; int ret; + if (!IS_ENABLED(CONFIG_MTD_WRITE)) + return -ENOSYS; + dev_dbg(nor->dev, "to 0x%08x, len %zd\n", (u32)to, len); ret = spi_nor_lock_and_prep(nor, SPI_NOR_OPS_WRITE); |