diff options
| author | Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> | 2018-10-04 16:34:45 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-25 11:53:31 +0300 |
| commit | 3f3f2f4d865d36697d5976927da82cb6c6fecc9b (patch) | |
| tree | 8d497a281ef02502acb384faec3944bb8186df71 | |
| parent | f62845f5a9139dd86bad0b2c51a9519fa13f3e20 (diff) | |
| download | linux-3f3f2f4d865d36697d5976927da82cb6c6fecc9b.tar.xz | |
mtd: physmap_of: Release resources on error
[ Upstream commit ef0de747f7ad179c7698a5b0e28db05f18ecbf57 ]
During probe, if there was an error the memory region and the memory
map were not properly released.This can lead a system unusable if
deferred probe is in use.
Replace mem_request and map with devm_ioremap_resource
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/mtd/maps/physmap_of.c | 27 |
1 files changed, 5 insertions, 22 deletions
diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c index 3fad35942895..7a716bed1158 100644 --- a/drivers/mtd/maps/physmap_of.c +++ b/drivers/mtd/maps/physmap_of.c @@ -29,7 +29,6 @@ struct of_flash_list { struct mtd_info *mtd; struct map_info map; - struct resource *res; }; struct of_flash { @@ -54,18 +53,10 @@ static int of_flash_remove(struct platform_device *dev) mtd_concat_destroy(info->cmtd); } - for (i = 0; i < info->list_size; i++) { + for (i = 0; i < info->list_size; i++) if (info->list[i].mtd) map_destroy(info->list[i].mtd); - if (info->list[i].map.virt) - iounmap(info->list[i].map.virt); - - if (info->list[i].res) { - release_resource(info->list[i].res); - kfree(info->list[i].res); - } - } return 0; } @@ -223,10 +214,11 @@ static int of_flash_probe(struct platform_device *dev) err = -EBUSY; res_size = resource_size(&res); - info->list[i].res = request_mem_region(res.start, res_size, - dev_name(&dev->dev)); - if (!info->list[i].res) + info->list[i].map.virt = devm_ioremap_resource(&dev->dev, &res); + if (IS_ERR(info->list[i].map.virt)) { + err = PTR_ERR(info->list[i].map.virt); goto err_out; + } err = -ENXIO; width = of_get_property(dp, "bank-width", NULL); @@ -247,15 +239,6 @@ static int of_flash_probe(struct platform_device *dev) return err; } - err = -ENOMEM; - info->list[i].map.virt = ioremap(info->list[i].map.phys, - info->list[i].map.size); - if (!info->list[i].map.virt) { - dev_err(&dev->dev, "Failed to ioremap() flash" - " region\n"); - goto err_out; - } - simple_map_init(&info->list[i].map); /* |