From: Jeremy Sowden <jeremy@xxxxxxxxxx>
[ Upstream commit abb611d2c21c0a4fa8eab35dc936c80d9a07acd8 ]
On error, probe_core_uio just returned an error without freeing
resources which had previously been allocated. Added the missing
clean-up code.
Updated TODO.
Signed-off-by: Jeremy Sowden <jeremy@xxxxxxxxxx>
Reviewed-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/staging/kpc2000/TODO | 1 -
drivers/staging/kpc2000/kpc2000/cell_probe.c | 3 +++
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/kpc2000/TODO b/drivers/staging/kpc2000/TODO
index 8c7af29fefae..ed951acc829a 100644
--- a/drivers/staging/kpc2000/TODO
+++ b/drivers/staging/kpc2000/TODO
@@ -1,7 +1,6 @@
- the kpc_spi driver doesn't seem to let multiple transactions (to different instances of the core) happen in parallel...
- The kpc_i2c driver is a hot mess, it should probably be cleaned up a ton. It functions against current hardware though.
- pcard->card_num in kp2000_pcie_probe() is a global variable and needs atomic / locking / something better.
-- probe_core_uio() probably needs error handling
- the loop in kp2000_probe_cores() that uses probe_core_uio() also probably needs error handling
- would be nice if the AIO fileops in kpc_dma could be made to work
- probably want to add a CONFIG_ option to control compilation of the AIO functions
diff --git a/drivers/staging/kpc2000/kpc2000/cell_probe.c b/drivers/staging/kpc2000/kpc2000/cell_probe.c
index e0dba91e7fa8..d6b57f550876 100644
--- a/drivers/staging/kpc2000/kpc2000/cell_probe.c
+++ b/drivers/staging/kpc2000/kpc2000/cell_probe.c
@@ -295,6 +295,7 @@ int probe_core_uio(unsigned int core_num, struct kp2000_device *pcard, char *na
kudev->dev = device_create(kpc_uio_class, &pcard->pdev->dev, MKDEV(0,0), kudev, "%s.%d.%d.%d", kudev->uioinfo.name, pcard->card_num, cte.type, kudev->core_num);
if (IS_ERR(kudev->dev)) {
dev_err(&pcard->pdev->dev, "probe_core_uio device_create failed!\n");
+ kfree(kudev);
return -ENODEV;
}
dev_set_drvdata(kudev->dev, kudev);
@@ -302,6 +303,8 @@ int probe_core_uio(unsigned int core_num, struct kp2000_device *pcard, char *na
rv = uio_register_device(kudev->dev, &kudev->uioinfo);
if (rv){
dev_err(&pcard->pdev->dev, "probe_core_uio failed uio_register_device: %d\n", rv);
+ put_device(kudev->dev);
+ kfree(kudev);
return rv;
}
--
2.20.1
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