drm/bochs: Fix some error handling paths in bochs_pci_probe()

The remove() function calls bochs_hw_fini() but this function is not called
in the error handling of the probe.

This call releases the resources allocated by bochs_hw_init() used in
bochs_load().

Update the probe and bochs_load() to call bochs_hw_fini() if an error
occurs after a successful bochs_hw_init() call.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: http://patchwork.freedesktop.org/patch/msgid/0e676e4d56ab5b10fcf22860081414445611dfa7.1655565953.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

diff --git a/drivers/gpu/drm/tiny/bochs.c b/drivers/gpu/drm/tiny/bochs.c
index 82364a0..08de137 100644 (file)
--- a/drivers/gpu/drm/tiny/bochs.c
+++ b/drivers/gpu/drm/tiny/bochs.c
@@ -583,13 +583,17 @@ static int bochs_load(struct drm_device *dev)
 
        ret = drmm_vram_helper_init(dev, bochs->fb_base, bochs->fb_size);
        if (ret)
-               return ret;
+               goto err_hw_fini;
 
        ret = bochs_kms_init(bochs);
        if (ret)
-               return ret;
+               goto err_hw_fini;
 
        return 0;
+
+err_hw_fini:
+       bochs_hw_fini(dev);
+       return ret;
 }
 
 DEFINE_DRM_GEM_FOPS(bochs_fops);
@@ -664,11 +668,13 @@ static int bochs_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent
 
        ret = drm_dev_register(dev, 0);
        if (ret)
-               goto err_free_dev;
+               goto err_hw_fini;
 
        drm_fbdev_generic_setup(dev, 32);
        return ret;
 
+err_hw_fini:
+       bochs_hw_fini(dev);
 err_free_dev:
        drm_dev_put(dev);
        return ret;