param: use free hook for charp (fix leak of charp parameters)

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Instead of using a "I kmalloced this" flag, we keep track of the kmalloced
strings and use that list to check if we need to kfree (in practice, the
list is very short).

This means that kparams can be const again, and plugs a leak.  This
is important for drivers/usb/gadget/nokia.c which gets modprobe/rmmod'ed
frequently on the N9000.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Tested-by: Phil Carmody <ext-phil.2.carmody@nokia.com>

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This commit is contained in:

Rusty Russell 2010-08-11 23:04:18 -06:00

parent e6df34a442

commit a1054322af

1 changed files with 50 additions and 2 deletions

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kernel/params.c

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