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Subject[34-longterm 083/179] ath5k: fix memory leak when fewer than N_PD_CURVES are in use
Date
From: "Eugene A. Shatokhin" <dame_eugene@mail.ru>

-------------------
This is a commit scheduled for the next v2.6.34 longterm release.
http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git
If you see a problem with using this for longterm, please comment.
-------------------

commit a0b8de350be458b33248e48b2174d9af8a4c4798 upstream.

We would free the proper number of curves, but in the wrong
slots, due to a missing level of indirection through
the pdgain_idx table.

It's simpler just to try to free all four slots, so do that.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---
drivers/net/wireless/ath/ath5k/eeprom.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/ath/ath5k/eeprom.c b/drivers/net/wireless/ath/ath5k/eeprom.c
index 67665cd..df1b8c4 100644
--- a/drivers/net/wireless/ath/ath5k/eeprom.c
+++ b/drivers/net/wireless/ath/ath5k/eeprom.c
@@ -1590,14 +1590,12 @@ ath5k_eeprom_free_pcal_info(struct ath5k_hw *ah, int mode)
if (!chinfo[pier].pd_curves)
continue;

- for (pdg = 0; pdg < ee->ee_pd_gains[mode]; pdg++) {
+ for (pdg = 0; pdg < AR5K_EEPROM_N_PD_CURVES; pdg++) {
struct ath5k_pdgain_info *pd =
&chinfo[pier].pd_curves[pdg];

- if (pd != NULL) {
- kfree(pd->pd_step);
- kfree(pd->pd_pwr);
- }
+ kfree(pd->pd_step);
+ kfree(pd->pd_pwr);
}

kfree(chinfo[pier].pd_curves);
--
1.7.9.6


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