The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 58589a75bba96f43b62d8069b35be081bc00d7c3 Mon Sep 17 00:00:00 2001
From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Date: Thu, 25 Nov 2021 23:27:29 +0200
Subject: [PATCH] misc: at25: Check proper value of chip length in FRAM case
Obviously the byte_len value should be checked from the chip
and not from at25->chip.
Fixes: fd307a4ad332 ("nvmem: prepare basics for FRAM support")
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20211125212729.86585-4-andriy.shevchenko@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
diff --git a/drivers/misc/eeprom/at25.c b/drivers/misc/eeprom/at25.c
index f0b0efc30ee6..e21216541b0f 100644
--- a/drivers/misc/eeprom/at25.c
+++ b/drivers/misc/eeprom/at25.c
@@ -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;
