From 0dbe4ea78d69756efeb0bba0764f6bd4a9ee9567 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= 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 Signed-off-by: Boris Brezillon --- 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;