If ad7280_read_all_channels() returns <0 then we'll leak the memory
allocated to 'channels' when we return and that variable goes out of
scope.
This patch fixes the leak.

Signed-off-by: Jesper Juhl <[email protected]>
---
 drivers/staging/iio/adc/ad7280a.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

 note: I don't have the hardware, so patch is compile tested only.

diff --git a/drivers/staging/iio/adc/ad7280a.c 
b/drivers/staging/iio/adc/ad7280a.c
index 372d059..dddc03c 100644
--- a/drivers/staging/iio/adc/ad7280a.c
+++ b/drivers/staging/iio/adc/ad7280a.c
@@ -687,8 +687,10 @@ static irqreturn_t ad7280_event_handler(int irq, void 
*private)
                return IRQ_HANDLED;
 
        ret = ad7280_read_all_channels(st, st->scan_cnt, channels);
-       if (ret < 0)
+       if (ret < 0) {
+               kfree(channels);
                return IRQ_HANDLED;
+       }
 
        for (i = 0; i < st->scan_cnt; i++) {
                if (((channels[i] >> 23) & 0xF) <= AD7280A_CELL_VOLTAGE_6) {
-- 
1.7.7.2


-- 
Jesper Juhl <[email protected]>       http://www.chaosbits.net/
Don't top-post http://www.catb.org/jargon/html/T/top-post.html
Plain text mails only, please.

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