On Thu, Dec 3, 2020 at 9:41 AM Dan Carpenter <dan.carpenter@xxxxxxxxxx> wrote:
>
> The main problem with this error handling was that it didn't clean up if
> i2c_add_numbered_adapter() failed. This code is pretty old, and doesn't
> match with today's checkpatch.pl standards so I took the opportunity to
> tidy it up a bit. I changed the NULL comparison, and removed the
> WARNING message if kzalloc() fails and updated the label names.
Thanks! Looks good.
I'll apply this to drm-misc-next
-Patrik
>
> Fixes: 1b082ccf5901 ("gma500: Add Oaktrail support")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> ---
> drivers/gpu/drm/gma500/oaktrail_hdmi_i2c.c | 22 +++++++++++++---------
> 1 file changed, 13 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/gma500/oaktrail_hdmi_i2c.c b/drivers/gpu/drm/gma500/oaktrail_hdmi_i2c.c
> index e28107061148..fc9a34ed58bd 100644
> --- a/drivers/gpu/drm/gma500/oaktrail_hdmi_i2c.c
> +++ b/drivers/gpu/drm/gma500/oaktrail_hdmi_i2c.c
> @@ -279,11 +279,8 @@ int oaktrail_hdmi_i2c_init(struct pci_dev *dev)
> hdmi_dev = pci_get_drvdata(dev);
>
> i2c_dev = kzalloc(sizeof(struct hdmi_i2c_dev), GFP_KERNEL);
> - if (i2c_dev == NULL) {
> - DRM_ERROR("Can't allocate interface\n");
> - ret = -ENOMEM;
> - goto exit;
> - }
> + if (!i2c_dev)
> + return -ENOMEM;
>
> i2c_dev->adap = &oaktrail_hdmi_i2c_adapter;
> i2c_dev->status = I2C_STAT_INIT;
> @@ -300,16 +297,23 @@ int oaktrail_hdmi_i2c_init(struct pci_dev *dev)
> oaktrail_hdmi_i2c_adapter.name, hdmi_dev);
> if (ret) {
> DRM_ERROR("Failed to request IRQ for I2C controller\n");
> - goto err;
> + goto free_dev;
> }
>
> /* Adapter registration */
> ret = i2c_add_numbered_adapter(&oaktrail_hdmi_i2c_adapter);
> - return ret;
> + if (ret) {
> + DRM_ERROR("Failed to add I2C adapter\n");
> + goto free_irq;
> + }
>
> -err:
> + return 0;
> +
> +free_irq:
> + free_irq(dev->irq, hdmi_dev);
> +free_dev:
> kfree(i2c_dev);
> -exit:
> +
> return ret;
> }
>
> --
> 2.29.2
>
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