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SubjectRe: [PATCH 01/24] mtd/maps/pismo: remove dangling pointer and a leak
On Sat, Mar 20, 2010 at 02:57:30PM +0000, Russell King wrote:
> On Sat, Mar 20, 2010 at 03:12:42PM +0100, Wolfram Sang wrote:
> > + exit_free:
> > + i2c_set_clientdata(client, NULL);
> > + kfree(prismo);
>
> And this is a compile error...

[grabbing some brown paper bags]

I'm sorry. That was one of the manually adapted ones :(
Here is the typo corrected:

Subject: [PATCH V2] mtd/maps/pismo: remove dangling pointer and a leak

While looking for drivers which forgot to clear i2c_clientdata before freeing
the data structure it points to, I found that the pismo driver even has a leak
on the probe error path.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: David Woodhouse <David.Woodhouse@intel.com>
---
drivers/mtd/maps/pismo.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/drivers/mtd/maps/pismo.c b/drivers/mtd/maps/pismo.c
index 30e12c8..f021018 100644
--- a/drivers/mtd/maps/pismo.c
+++ b/drivers/mtd/maps/pismo.c
@@ -233,6 +233,7 @@ static int __devexit pismo_remove(struct i2c_client *client)
/* FIXME: set_vpp needs saner arguments */
pismo_setvpp_remove_fix(pismo);

+ i2c_set_clientdata(client, NULL);
kfree(pismo);

return 0;
@@ -271,7 +272,7 @@ static int __devinit pismo_probe(struct i2c_client *client,
ret = pismo_eeprom_read(client, &eeprom, 0, sizeof(eeprom));
if (ret < 0) {
dev_err(&client->dev, "error reading EEPROM: %d\n", ret);
- return ret;
+ goto exit_free;
}

dev_info(&client->dev, "%.15s board found\n", eeprom.board);
@@ -282,6 +283,11 @@ static int __devinit pismo_probe(struct i2c_client *client,
pdata->cs_addrs[i]);

return 0;
+
+ exit_free:
+ i2c_set_clientdata(client, NULL);
+ kfree(pismo);
+ return ret;
}

static const struct i2c_device_id pismo_id[] = {
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |[unhandled content-type:application/pgp-signature]
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