[PATCH 1/2] char: pcmcia: cm4000_cs: Fix failure handling Handled failure cases of device_create()

From: nizamhaider786
Date: Sun May 23 2021 - 15:33:00 EST


From: Nijam Haider <nizamhaider786@xxxxxxxxx>

Signed-off-by: Nijam Haider <nizamhaider786@xxxxxxxxx>
---
drivers/char/pcmcia/cm4000_cs.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c
index 89681f0..d6f5598 100644
--- a/drivers/char/pcmcia/cm4000_cs.c
+++ b/drivers/char/pcmcia/cm4000_cs.c
@@ -1783,6 +1783,7 @@ static int cm4000_probe(struct pcmcia_device *link)
{
struct cm4000_dev *dev;
int i, ret;
+ struct device *dev_ret;

for (i = 0; i < CM4000_MAX_DEV; i++)
if (dev_table[i] == NULL)
@@ -1814,8 +1815,15 @@ static int cm4000_probe(struct pcmcia_device *link)
return ret;
}

- device_create(cmm_class, NULL, MKDEV(major, i), NULL, "cmm%d", i);
-
+ dev_ret = device_create(cmm_class, NULL, MKDEV(major, i), NULL, "cmm%d", i);
+ if (IS_ERR(dev_ret)) {
+ printk(KERN_ERR "device_create failed for %d\n",
+ i);
+ cm4000_release(link);
+ dev_table[i] = NULL;
+ kfree(dev);
+ return -ENODEV;
+ }
return 0;
}

--
2.7.4