[PATCH] hecubafb: add module_put on error path in hecubafb_probe()

From: Pavel Shved
Date: Fri Jun 17 2011 - 12:57:12 EST

In hecubafb_probe(), after a successful try_module_get, vzalloc may
fail and make the hecubafb_probe return, but the module is not put on
this error path.

This patch adds an exit point that calls module_put in such situation.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Pavel Shved <shved@xxxxxxxxx>
drivers/video/hecubafb.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/video/hecubafb.c b/drivers/video/hecubafb.c
index fbef15f..614251a 100644
--- a/drivers/video/hecubafb.c
+++ b/drivers/video/hecubafb.c
@@ -233,7 +233,7 @@ static int __devinit hecubafb_probe(struct platform_device *dev)

videomemory = vzalloc(videomemorysize);
if (!videomemory)
- return retval;
+ goto err_videomem_alloc;

info = framebuffer_alloc(sizeof(struct hecubafb_par), &dev->dev);
if (!info)
@@ -275,6 +275,7 @@ err_fbreg:
return retval;

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