[PATCH u-boot-spi v3 07/10] mtd: spi-nor-core: Call mtd_erase_callback() from spi_nor_erase()

Marek Behún
2021-10-05T13:57:59Z

The spi_nor_erase() function does not call mtd_erase_callback() as it
should.

The mtdpart code currently implements the subtraction of partition
offset in mtd_erase_callback().

This results in partition offset being added prior calling
spi_nor_erase(), but not subtracted back on return. The result is that
the `mtd erase` command does not erase the whole partition, only some of
it's blocks:

=> mtd erase "Rescue system"
Erasing 0x00000000 ... 0x006fffff (1792 eraseblock(s))
jedec_spi_nor spi-nor@0: at 0x100000, len 4096
jedec_spi_nor spi-nor@0: at 0x201000, len 4096
jedec_spi_nor spi-nor@0: at 0x302000, len 4096
jedec_spi_nor spi-nor@0: at 0x403000, len 4096
jedec_spi_nor spi-nor@0: at 0x504000, len 4096
jedec_spi_nor spi-nor@0: at 0x605000, len 4096
jedec_spi_nor spi-nor@0: at 0x706000, len 4096

This is obviously wrong.

Add proper calling of mtd_erase_callback() into the spi_nor_erase()
function.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reported-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
Tested-by: Masami Hiramatsu <masami.hiramatsu@linaro.org>
---
drivers/mtd/spi/spi-nor-core.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c
index 4c2590d0c5..451f289339 100644
--- a/drivers/mtd/spi/spi-nor-core.c
+++ b/drivers/mtd/spi/spi-nor-core.c
@@ -908,6 +908,7 @@ static int spi_nor_erase_sector(struct spi_nor *nor, u32 addr)
static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr)
{
struct spi_nor *nor = mtd_to_spi_nor(mtd);
+ bool addr_known = false;
u32 addr, len, rem;
int ret, err;

@@ -915,12 +916,17 @@ static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr)
(long long)instr->len);

div_u64_rem(instr->len, mtd->erasesize, &rem);
- if (rem)
- return -EINVAL;
+ if (rem) {
+ ret = -EINVAL;
+ goto erase_err_callback;
+ }

addr = instr->addr;
len = instr->len;

+ instr->state = MTD_ERASING;
+ addr_known = true;
+
while (len) {
WATCHDOG_RESET();
#ifdef CONFIG_SPI_FLASH_BAR
@@ -944,6 +950,7 @@ static int spi_nor_erase(struct mtd_info *mtd, struct erase_info *instr)
goto erase_err;
}

+ addr_known = false;
erase_err:
#ifdef CONFIG_SPI_FLASH_BAR
err = clean_bar(nor);
@@ -954,6 +961,15 @@ erase_err:
if (!ret)
ret = err;

+erase_err_callback:
+ if (ret) {
+ instr->fail_addr = addr_known ? addr : MTD_FAIL_ADDR_UNKNOWN;
+ instr->state = MTD_ERASE_FAILED;
+ } else {
+ instr->state = MTD_ERASE_DONE;
+ }
+ mtd_erase_callback(instr);
+
return ret;
}

--
2.32.0