| Message ID | 20241202-imx-ele-ocotp-fixes-v2-1-3c021a97eb5d@pengutronix.de (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | nvmem: imx-ocotp-ele: fix reading from ELE OCOTP | expand |
diff --git a/drivers/nvmem/imx-ocotp-ele.c b/drivers/nvmem/imx-ocotp-ele.c index 1ba4944976987..2e186b7d3b040 100644 --- a/drivers/nvmem/imx-ocotp-ele.c +++ b/drivers/nvmem/imx-ocotp-ele.c @@ -72,13 +72,13 @@ static int imx_ocotp_reg_read(void *context, unsigned int offset, void *val, siz void *p; int i; + if (offset + bytes > priv->data->size) + bytes = priv->data->size - offset; + index = offset; num_bytes = round_up(bytes, 4); count = num_bytes >> 2; - if (count > ((priv->data->size >> 2) - index)) - count = (priv->data->size >> 2) - index; - p = kzalloc(num_bytes, GFP_KERNEL); if (!p) return -ENOMEM;
Do the read beyond device check on function entry in bytes instead of 32bit words which is easier to follow. Fixes: 22e9e6fcfb504 ("nvmem: imx: support i.MX93 OCOTP") Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Cc: stable <stable@kernel.org> --- drivers/nvmem/imx-ocotp-ele.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)