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| author | Lucas Stach <l.stach@pengutronix.de> | 2018-11-06 17:14:07 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2018-11-07 08:46:55 +0100 |
| commit | 20c12d090a1de80a3c58a232b4074067dcbb61a4 (patch) | |
| tree | f8c65a379c628bf1b4738fd2d7f86cd9a3b11434 /commands/mem.c | |
| parent | b8cfa99541e218bdf76a63872eb252e0ef94078d (diff) | |
| download | barebox-20c12d090a1de80a3c58a232b4074067dcbb61a4.tar.gz barebox-20c12d090a1de80a3c58a232b4074067dcbb61a4.tar.xz | |
commands: mem: truncate mem device size to fit the loff_t file size
On 64bit arches the file covering the whole address space is larger than
what can be represented in the loff_t type (s64) used for the file size.
Thus the size of this device is interpreted as negative in a lot of
places. Fix this by truncating the size to fit the file size type.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'commands/mem.c')
| -rw-r--r-- | commands/mem.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/commands/mem.c b/commands/mem.c index eb91ade05a..cdd7a492d0 100644 --- a/commands/mem.c +++ b/commands/mem.c @@ -96,7 +96,8 @@ static int mem_probe(struct device_d *dev) dev->priv = cdev; cdev->name = (char*)dev->resource[0].name; - cdev->size = (unsigned long)resource_size(&dev->resource[0]); + cdev->size = min(resource_size(&dev->resource[0]), + (unsigned long long)S64_MAX); cdev->ops = &memops; cdev->dev = dev; |