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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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7
drivers/spi/spi.c
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@ -67,14 +67,11 @@ static int spi_match_device(struct device *dev, struct device_driver *drv)
return strncmp(spi->modalias, drv->name, BUS_ID_SIZE) == 0;
}
static int spi_uevent(struct device *dev, char **envp, int num_envp,
char *buffer, int buffer_size)
static int spi_uevent(struct device *dev, struct kobj_uevent_env *env)
{
const struct spi_device *spi = to_spi_device(dev);
envp[0] = buffer;
snprintf(buffer, buffer_size, "MODALIAS=%s", spi->modalias);
envp[1] = NULL;
add_uevent_var(env, "MODALIAS=%s", spi->modalias);
return 0;
}