[PATCH 1/1] nandsim: add names parameter

[Tj]

Allow naming of partitions.

Useful for simulating an embedded device even on a different
architecture and with the help of qemu-user debugging tools such as
flash updaters that expect partitions to have defined names.

Signed-off-by: Tj <tj.iam.tj at proton.me>
---
 drivers/mtd/nand/raw/nandsim.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c
index df48b7d01d16c..085b5e2b8a0a6 100644
--- a/drivers/mtd/nand/raw/nandsim.c
+++ b/drivers/mtd/nand/raw/nandsim.c
@@ -103,7 +103,10 @@ static u_char id_bytes[8] = {
  [3] = CONFIG_NANDSIM_FOURTH_ID_BYTE,
  [4 ... 7] = 0xFF,
 };
+static char *names[CONFIG_NANDSIM_MAX_PARTS] = { [0 ... (CONFIG_NANDSIM_MAX_PARTS-1)] = NULL };
+static uint names_num;

+module_param_array(names, charp, &names_num, 0400);
 module_param_array(id_bytes, byte, NULL, 0400);
 module_param_named(first_id_byte, id_bytes[0], byte, 0400);
 module_param_named(second_id_byte, id_bytes[1], byte, 0400);
@@ -129,6 +132,7 @@ module_param(cache_file,     charp, 0400);
 module_param(bbt,       uint, 0400);
 module_param(bch,       uint, 0400);

+MODULE_PARM_DESC(names,          "Array of name strings");
 MODULE_PARM_DESC(id_bytes,       "The ID bytes returned by NAND Flash 'read ID' command");
 MODULE_PARM_DESC(first_id_byte,  "The first byte returned by NAND Flash 'read ID' command (manufacturer ID) (obsolete)");
 MODULE_PARM_DESC(second_id_byte, "The second byte returned by NAND Flash 'read ID' command (chip ID) (obsolete)");
@@ -629,6 +633,9 @@ static void ns_free_device(struct nandsim *ns)

 static char __init *ns_get_partition_name(int i)
 {
+ if (i < names_num)
+   return names[i];
+
  return kasprintf(GFP_KERNEL, "NAND simulator partition %d", i);
 }

--
2.39.5