target/linux/bcm27xx/patches-5.15/950-0803-drm-panel-ilitek-ili9881c-Clean-up-on-mipi_dsi_attac.patch

   1 From 6339483e274de22714984c3b017de13c3f991e98 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Thu, 31 Mar 2022 12:03:36 +0100
   4 Subject: [PATCH] drm/panel: ilitek-ili9881c: Clean up on
   5  mipi_dsi_attach failure
   6
   7 mipi_dsi_attach is allowed to fail, and currently the probe
   8 code doesn't clean up (mainly drm_panel_remove) if this happens.
   9
  10 Add cleanup code on failure.
  11
  12 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  13 ---
  14  drivers/gpu/drm/panel/panel-ilitek-ili9881c.c | 6 +++++-
  15  1 file changed, 5 insertions(+), 1 deletion(-)
  16
  17 --- a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
  18 +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
  19 @@ -913,7 +913,11 @@ static int ili9881c_dsi_probe(struct mip
  20         dsi->format = MIPI_DSI_FMT_RGB888;
  21         dsi->lanes = 4;
  22
  23 -       return mipi_dsi_attach(dsi);
  24 +       ret = mipi_dsi_attach(dsi);
  25 +       if (ret)
  26 +               drm_panel_remove(&ctx->panel);
  27 +
  28 +       return ret;
  29  }
  30
  31  static int ili9881c_dsi_remove(struct mipi_dsi_device *dsi)