Re: [PATCH v3 17/18] nvmem: layouts: Add ONIE tlv layout driver

From: Michael Walle
Date: Wed Nov 23 2022 - 04:59:13 EST


Am 2022-11-21 08:51, schrieb Sascha Hauer:
On Fri, Nov 18, 2022 at 07:51:17PM +0100, Michael Walle wrote:
From: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>

This layout applies no top of any non volatile storage device containing

s/no/on/

+ table_len = hdr_len + data_len;
+ if (table_len > ONIE_TLV_MAX_LEN) {
+ dev_err(dev, "Invalid ONIE TLV data length\n");
+ return -EINVAL;
+ }
+
+ table = devm_kmalloc(dev, table_len, GFP_KERNEL);
+ if (!table)
+ return -ENOMEM;
+
+ ret = nvmem_device_read(nvmem, 0, table_len, table);
+ if (ret != table_len)
+ goto free_data_buf;
+
+ if (!onie_tlv_crc_is_valid(dev, table_len, table)) {
+ ret = -EINVAL;
+ goto free_data_buf;
+ }
+
+ data = table + hdr_len;
+ ret = onie_tlv_add_cells(dev, nvmem, data_len, data);
+ if (ret)
+ goto free_data_buf;
+
+free_data_buf:
+ kfree(table);

This is allocated with devm_kmalloc(), you shouldn't free it here.

Miquel, should I drop your patches or should I fix this in place and
repost them?

Also, there is a mistake in nvmem_add_cells_from_layout() which doesn't
handle the return code. Probably a leftover from before when I had
.add_cells() return void.

-michael