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authorKay Sievers <kay.sievers@vrfy.org>2007-08-14 15:15:12 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2007-10-12 14:51:01 -0700
commit7eff2e7a8b65c25920207324e56611150eb1cd9a (patch)
tree02a0eeba9d25d996233e30c18f258dfae0ae2139 /drivers/mmc
parent8380770c842faef3001e44662953d64ad9a93663 (diff)
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Driver core: change add_uevent_var to use a struct
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 <kay.sievers@vrfy.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/core/bus.c21
1 files changed, 7 insertions, 14 deletions
diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index 8d6f6014870..b0c22cad942 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -58,12 +58,11 @@ static int mmc_bus_match(struct device *dev, struct device_driver *drv)
}
static int
-mmc_bus_uevent(struct device *dev, char **envp, int num_envp, char *buf,
- int buf_size)
+mmc_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct mmc_card *card = dev_to_mmc_card(dev);
const char *type;
- int i = 0, length = 0;
+ int retval = 0;
switch (card->type) {
case MMC_TYPE_MMC:
@@ -80,20 +79,14 @@ mmc_bus_uevent(struct device *dev, char **envp, int num_envp, char *buf,
}
if (type) {
- if (add_uevent_var(envp, num_envp, &i,
- buf, buf_size, &length,
- "MMC_TYPE=%s", type))
- return -ENOMEM;
+ retval = add_uevent_var(env, "MMC_TYPE=%s", type);
+ if (retval)
+ return retval;
}
- if (add_uevent_var(envp, num_envp, &i,
- buf, buf_size, &length,
- "MMC_NAME=%s", mmc_card_name(card)))
- return -ENOMEM;
+ retval = add_uevent_var(env, "MMC_NAME=%s", mmc_card_name(card));
- envp[i] = NULL;
-
- return 0;
+ return retval;
}
static int mmc_bus_probe(struct device *dev)