video: fbdev: sm501fb: convert platform driver to use dev_groups

Platform drivers now have the option to have the platform core create
and remove any needed sysfs attribute files.  So take advantage of that
and do not register "by hand" a bunch of sysfs files.

Cc: dri-devel@lists.freedesktop.org
Cc: linux-fbdev@vger.kernel.org
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20190731124349.4474-11-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/video/fbdev/sm501fb.c b/drivers/video/fbdev/sm501fb.c
index 6edb4492e67566d8d8ccba796b504588d22f725c..3dd1b1d76e983a799fd07536ed0edfb68dc7ed7f 100644 (file)
--- a/drivers/video/fbdev/sm501fb.c
+++ b/drivers/video/fbdev/sm501fb.c
@@ -1271,6 +1271,14 @@ static ssize_t sm501fb_debug_show_pnl(struct device *dev,
 
 static DEVICE_ATTR(fbregs_pnl, 0444, sm501fb_debug_show_pnl, NULL);
 
+static struct attribute *sm501fb_attrs[] = {
+       &dev_attr_crt_src.attr,
+       &dev_attr_fbregs_pnl.attr,
+       &dev_attr_fbregs_crt.attr,
+       NULL,
+};
+ATTRIBUTE_GROUPS(sm501fb);
+
 /* acceleration operations */
 static int sm501fb_sync(struct fb_info *info)
 {
@@ -2011,33 +2019,9 @@ static int sm501fb_probe(struct platform_device *pdev)
                goto err_started_crt;
        }
 
-       /* create device files */
-
-       ret = device_create_file(dev, &dev_attr_crt_src);
-       if (ret)
-               goto err_started_panel;
-
-       ret = device_create_file(dev, &dev_attr_fbregs_pnl);
-       if (ret)
-               goto err_attached_crtsrc_file;
-
-       ret = device_create_file(dev, &dev_attr_fbregs_crt);
-       if (ret)
-               goto err_attached_pnlregs_file;
-
        /* we registered, return ok */
        return 0;
 
-err_attached_pnlregs_file:
-       device_remove_file(dev, &dev_attr_fbregs_pnl);
-
-err_attached_crtsrc_file:
-       device_remove_file(dev, &dev_attr_crt_src);
-
-err_started_panel:
-       unregister_framebuffer(info->fb[HEAD_PANEL]);
-       sm501_free_init_fb(info, HEAD_PANEL);
-
 err_started_crt:
        unregister_framebuffer(info->fb[HEAD_CRT]);
        sm501_free_init_fb(info, HEAD_CRT);
@@ -2067,10 +2051,6 @@ static int sm501fb_remove(struct platform_device *pdev)
        struct fb_info     *fbinfo_crt = info->fb[0];
        struct fb_info     *fbinfo_pnl = info->fb[1];
 
-       device_remove_file(&pdev->dev, &dev_attr_fbregs_crt);
-       device_remove_file(&pdev->dev, &dev_attr_fbregs_pnl);
-       device_remove_file(&pdev->dev, &dev_attr_crt_src);
-
        sm501_free_init_fb(info, HEAD_CRT);
        sm501_free_init_fb(info, HEAD_PANEL);
 
@@ -2234,6 +2214,7 @@ static struct platform_driver sm501fb_driver = {
        .resume         = sm501fb_resume,
        .driver         = {
                .name   = "sm501-fb",
+               .dev_groups     = sm501fb_groups,
        },
 };