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| author | Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> | 2018-10-04 15:34:45 +0200 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-10-05 10:19:33 +0200 |
| commit | ef0de747f7ad179c7698a5b0e28db05f18ecbf57 (patch) | |
| tree | da065bbd4ac9849d0e1e36d1033309f4c5eeee80 | |
| parent | e42e175ae319fd67b3969da7537e0ef7eab4fe6b (diff) | |
| download | linux-ef0de747f7ad179c7698a5b0e28db05f18ecbf57.tar.bz2 | |
mtd: physmap_of: Release resources on error
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>
| -rw-r--r-- | drivers/mtd/maps/physmap_of_core.c | 27 |
1 files changed, 5 insertions, 22 deletions
diff --git a/drivers/mtd/maps/physmap_of_core.c b/drivers/mtd/maps/physmap_of_core.c index 4129535b8e46..ece605d78c21 100644 --- a/drivers/mtd/maps/physmap_of_core.c +++ b/drivers/mtd/maps/physmap_of_core.c @@ -31,7 +31,6 @@ struct of_flash_list { struct mtd_info *mtd; struct map_info map; - struct resource *res; }; struct of_flash { @@ -56,18 +55,10 @@ 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; } @@ -215,10 +206,11 @@ 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); @@ -246,15 +238,6 @@ static int of_flash_probe(struct platform_device *dev) if (err) goto err_out; - 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); /* |