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misc: at25: Check proper value of chip length in FRAM case

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Obviously the byte_len value should be checked from the chip
and not from at25->chip.

Fixes: fd307a4ad3 ("nvmem: prepare basics for FRAM support")
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20211125212729.86585-4-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2021-11-25 23:27:29 +02:00 committed by Greg Kroah-Hartman
parent a692fc39bf
commit 58589a75bb
1 changed files with 2 additions and 2 deletions
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4
drivers/misc/eeprom/at25.c
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@ -433,9 +433,9 @@ static int at25_probe(struct spi_device *spi)
dev_err(&spi->dev, "Error: unsupported size (id %02x)\n", id[7]);
return -ENODEV;
}
chip.byte_len = int_pow(2, id[7] - 0x21 + 4) * 1024;
if (at25->chip.byte_len > 64 * 1024)
chip.byte_len = int_pow(2, id[7] - 0x21 + 4) * 1024;
if (chip.byte_len > 64 * 1024)
at25->chip.flags |= EE_ADDR3;
else
at25->chip.flags |= EE_ADDR2;