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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2009-02-21 01:17:10 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2009-03-19 12:21:18 +0100 |
| commit | 0b5a776c1e9cc6dec8d5fa6d2f97eb8f19d3d325 (patch) | |
| tree | 55e998b87b5b4e1cc9b34ffffc02d7ea851239f6 /lib | |
| parent | 36ae69a2dcb443bd3d55086f2f620e0057c9d6a6 (diff) | |
| download | barebox-0b5a776c1e9cc6dec8d5fa6d2f97eb8f19d3d325.tar.gz barebox-0b5a776c1e9cc6dec8d5fa6d2f97eb8f19d3d325.tar.xz | |
Shutdown U-Boot before starting an OS
Some devices, especially the ones doing DMA should be disabled before
giving control to an OS. We take the simple approach here: Just shutdown
the devices in the reverse order they were activated.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/driver.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/driver.c b/lib/driver.c index 5aa643d03c..d722b09494 100644 --- a/lib/driver.c +++ b/lib/driver.c @@ -40,6 +40,8 @@ EXPORT_SYMBOL(device_list); LIST_HEAD(driver_list); EXPORT_SYMBOL(driver_list); +static LIST_HEAD(active); + struct device_d *get_device_by_id(const char *id) { struct device_d *dev; @@ -77,6 +79,8 @@ static int match(struct driver_d *drv, struct device_d *dev) dev->driver = drv; + list_add(&dev->active, &active); + return 0; } @@ -326,6 +330,16 @@ const char *dev_id(const struct device_d *dev) return buf; } +void devices_shutdown(void) +{ + struct device_d *dev; + + list_for_each_entry(dev, &active, active) { + if (dev->driver->remove) + dev->driver->remove(dev); + } +} + #ifdef CONFIG_CMD_DEVINFO static int do_devinfo ( cmd_tbl_t *cmdtp, int argc, char *argv[]) |