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mtd: core: set some defaults when dev.parent is set

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If a parent device is set, add_mtd_device() has enough knowledge to fill
in some sane default values for the module name and owner. Do so if they
aren't already set.

Signed-off-by: Frans Klaver <fransklaver@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Frans Klaver 2015-06-10 22:38:16 +02:00 committed by Brian Norris
parent 260e89a6e0
commit 807f16d4db
1 changed files with 9 additions and 0 deletions
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9
drivers/mtd/mtdcore.c
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@ -418,6 +418,15 @@ int add_mtd_device(struct mtd_info *mtd)
mtd->erasesize_mask = (1 << mtd->erasesize_shift) - 1; mtd->erasesize_mask = (1 << mtd->erasesize_shift) - 1;
mtd->writesize_mask = (1 << mtd->writesize_shift) - 1; mtd->writesize_mask = (1 << mtd->writesize_shift) - 1;
if (mtd->dev.parent) {
if (!mtd->owner && mtd->dev.parent->driver)
mtd->owner = mtd->dev.parent->driver->owner;
if (!mtd->name)
mtd->name = dev_name(mtd->dev.parent);
} else {
pr_debug("mtd device won't show a device symlink in sysfs\n");
}
/* Some chips always power up locked. Unlock them now */ /* Some chips always power up locked. Unlock them now */
if ((mtd->flags & MTD_WRITEABLE) && (mtd->flags & MTD_POWERUP_LOCK)) { if ((mtd->flags & MTD_WRITEABLE) && (mtd->flags & MTD_POWERUP_LOCK)) {
error = mtd_unlock(mtd, 0, mtd->size); error = mtd_unlock(mtd, 0, mtd->size);