lkml.org 
[lkml]   [2010]   [Mar]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Date
Subject[PATCH 20/24] staging/go7007: fix dangling pointers
Fix I2C-drivers which missed setting clientdata to NULL before freeing the
structure it points to. Also fix drivers which do this _after_ the structure
was freed already.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
---

Found using coccinelle, then reviewed. Full patchset is available via
kernel-janitors, linux-i2c, and LKML.
---
drivers/staging/go7007/wis-saa7113.c | 1 +
drivers/staging/go7007/wis-saa7115.c | 1 +
drivers/staging/go7007/wis-tw9903.c | 1 +
3 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/go7007/wis-saa7113.c b/drivers/staging/go7007/wis-saa7113.c
index d196e16..26365af 100644
--- a/drivers/staging/go7007/wis-saa7113.c
+++ b/drivers/staging/go7007/wis-saa7113.c
@@ -288,6 +288,7 @@ static int wis_saa7113_probe(struct i2c_client *client,
if (write_regs(client, initial_registers) < 0) {
printk(KERN_ERR
"wis-saa7113: error initializing SAA7113\n");
+ i2c_set_clientdata(client, NULL);
kfree(dec);
return -ENODEV;
}
diff --git a/drivers/staging/go7007/wis-saa7115.c b/drivers/staging/go7007/wis-saa7115.c
index 0f2b4a0..0d71f6a 100644
--- a/drivers/staging/go7007/wis-saa7115.c
+++ b/drivers/staging/go7007/wis-saa7115.c
@@ -421,6 +421,7 @@ static int wis_saa7115_probe(struct i2c_client *client,
if (write_regs(client, initial_registers) < 0) {
printk(KERN_ERR
"wis-saa7115: error initializing SAA7115\n");
+ i2c_set_clientdata(client, NULL);
kfree(dec);
return -ENODEV;
}
diff --git a/drivers/staging/go7007/wis-tw9903.c b/drivers/staging/go7007/wis-tw9903.c
index f97e2be..c21b88a 100644
--- a/drivers/staging/go7007/wis-tw9903.c
+++ b/drivers/staging/go7007/wis-tw9903.c
@@ -293,6 +293,7 @@ static int wis_tw9903_probe(struct i2c_client *client,

if (write_regs(client, initial_registers) < 0) {
printk(KERN_ERR "wis-tw9903: error initializing TW9903\n");
+ i2c_set_clientdata(client, NULL);
kfree(dec);
return -ENODEV;
}
--
1.7.0


\
 
 \ /
  Last update: 2010-03-20 15:19    [W:0.242 / U:1.576 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site