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Driver core: change add_uevent_var to use a struct

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This changes the uevent buffer functions to use a struct instead of a
long list of parameters. It does no longer require the caller to do the
proper buffer termination and size accounting, which is currently wrong
in some places. It fixes a known bug where parts of the uevent
environment are overwritten because of wrong index calculations.

Many thanks to Mathieu Desnoyers for finding bugs and improving the
error handling.

Signed-off-by: Kay Sievers <[email protected]>
Cc: Mathieu Desnoyers <[email protected]>
Cc: Cornelia Huck <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Kay Sievers 2007-08-14 15:15:12 +02:00 • committed by Greg Kroah-Hartman
commit 7eff2e7a8b
47 changed files with 300 additions and 636 deletions
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9
drivers/amba/bus.c
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@ -44,15 +44,12 @@ static int amba_match(struct device *dev, struct device_driver *drv)
}
#ifdef CONFIG_HOTPLUG
static int amba_uevent(struct device *dev, char **envp, int nr_env, char *buf, int bufsz)
static int amba_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct amba_device *pcdev = to_amba_device(dev);
int retval = 0, i = 0, len = 0;
int retval = 0;
retval = add_uevent_var(envp, nr_env, &i,
buf, bufsz, &len,
"AMBA_ID=%08x", pcdev->periphid);
envp[i] = NULL;
retval = add_uevent_var(env, "AMBA_ID=%08x", pcdev->periphid);
return retval;
}
#else