8651f1149d
These 2 patches were recently queued for 4.17. Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
94 lines
2.8 KiB
Diff
94 lines
2.8 KiB
Diff
From 0dbe4ea78d69756efeb0bba0764f6bd4a9ee9567 Mon Sep 17 00:00:00 2001
|
|
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
|
|
Date: Tue, 16 Jan 2018 16:45:42 +0100
|
|
Subject: [PATCH] mtd: get rid of the mtd_add_device_partitions()
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
This simplifies code a bit by:
|
|
1) Avoiding an extra (tiny) function
|
|
2) Checking for amount of parsed (found) partitions just once
|
|
3) Avoiding clearing/filling struct mtd_partitions manually
|
|
|
|
With this commit proper functions are called directly from the
|
|
mtd_device_parse_register(). It doesn't need to use minor tricks like
|
|
memsetting struct to 0 to trigger an expected
|
|
mtd_add_device_partitions() behavior.
|
|
|
|
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
|
|
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
|
|
---
|
|
drivers/mtd/mtdcore.c | 43 ++++++++++++-------------------------------
|
|
1 file changed, 12 insertions(+), 31 deletions(-)
|
|
|
|
--- a/drivers/mtd/mtdcore.c
|
|
+++ b/drivers/mtd/mtdcore.c
|
|
@@ -636,21 +636,6 @@ out_error:
|
|
return ret;
|
|
}
|
|
|
|
-static int mtd_add_device_partitions(struct mtd_info *mtd,
|
|
- struct mtd_partitions *parts)
|
|
-{
|
|
- const struct mtd_partition *real_parts = parts->parts;
|
|
- int nbparts = parts->nr_parts;
|
|
-
|
|
- if (!nbparts && !device_is_registered(&mtd->dev))
|
|
- return add_mtd_device(mtd);
|
|
-
|
|
- if (nbparts > 0)
|
|
- return add_mtd_partitions(mtd, real_parts, nbparts);
|
|
-
|
|
- return 0;
|
|
-}
|
|
-
|
|
/*
|
|
* Set a few defaults based on the parent devices, if not provided by the
|
|
* driver
|
|
@@ -701,7 +686,7 @@ int mtd_device_parse_register(struct mtd
|
|
const struct mtd_partition *parts,
|
|
int nr_parts)
|
|
{
|
|
- struct mtd_partitions parsed;
|
|
+ struct mtd_partitions parsed = { };
|
|
int ret;
|
|
|
|
mtd_set_dev_defaults(mtd);
|
|
@@ -712,24 +697,20 @@ int mtd_device_parse_register(struct mtd
|
|
return ret;
|
|
}
|
|
|
|
- memset(&parsed, 0, sizeof(parsed));
|
|
-
|
|
+ /* Prefer parsed partitions over driver-provided fallback */
|
|
ret = parse_mtd_partitions(mtd, types, &parsed, parser_data);
|
|
- if ((ret < 0 || parsed.nr_parts == 0) && parts && nr_parts) {
|
|
- /* Fall back to driver-provided partitions */
|
|
- parsed = (struct mtd_partitions){
|
|
- .parts = parts,
|
|
- .nr_parts = nr_parts,
|
|
- };
|
|
- } else if (ret < 0) {
|
|
- /* Didn't come up with parsed OR fallback partitions */
|
|
- pr_info("mtd: failed to find partitions; one or more parsers reports errors (%d)\n",
|
|
- ret);
|
|
- /* Don't abort on errors; we can still use unpartitioned MTD */
|
|
- memset(&parsed, 0, sizeof(parsed));
|
|
+ if (!ret && parsed.nr_parts) {
|
|
+ parts = parsed.parts;
|
|
+ nr_parts = parsed.nr_parts;
|
|
}
|
|
|
|
- ret = mtd_add_device_partitions(mtd, &parsed);
|
|
+ if (nr_parts)
|
|
+ ret = add_mtd_partitions(mtd, parts, nr_parts);
|
|
+ else if (!device_is_registered(&mtd->dev))
|
|
+ ret = add_mtd_device(mtd);
|
|
+ else
|
|
+ ret = 0;
|
|
+
|
|
if (ret)
|
|
goto out;
|
|
|