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Subject[PATCH v2 2/2] char: pcmcia: cm4040_cs: Fix failure handling
Date
From: Nijam Haider <nizamhaider786@gmail.com>

Handled failure cases of device_create()

Signed-off-by: Nijam Haider <nizamhaider786@gmail.com>
---
V1 -> V2: Added description and changelog
---
drivers/char/pcmcia/cm4040_cs.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/char/pcmcia/cm4040_cs.c b/drivers/char/pcmcia/cm4040_cs.c
index d5e43606339c..526198be91fa 100644
--- a/drivers/char/pcmcia/cm4040_cs.c
+++ b/drivers/char/pcmcia/cm4040_cs.c
@@ -558,6 +558,7 @@ static void reader_release(struct pcmcia_device *link)
static int reader_probe(struct pcmcia_device *link)
{
struct reader_dev *dev;
+ struct device *dev_ret;
int i, ret;

for (i = 0; i < CM_MAX_DEV; i++) {
@@ -593,8 +594,14 @@ static int reader_probe(struct pcmcia_device *link)
return ret;
}

- device_create(cmx_class, NULL, MKDEV(major, i), NULL, "cmx%d", i);
-
+ dev_ret = device_create(cmx_class, NULL, MKDEV(major, i), NULL, "cmx%d", i);
+ if (IS_ERR(dev_ret)) {
+ dev_err(&link->dev, "device_create failed for %d\n", i);
+ reader_release(link);
+ dev_table[i] = NULL;
+ kfree(dev);
+ return -ENODEV;
+ }
return 0;
}

--
2.7.4
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