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drm/simpledrm: Fix power domain device link validity check

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We need to check if a link is non-NULL before trying to delete it.

Fixes: 61df9ca231 ("drm/simpledrm: Add support for multiple "power-domains"")
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Janne Grunau <j@jannau.net>
Cc: Eric Curtin <ecurtin@redhat.com>
Cc: Neal Gompa <neal@gompa.dev>
Cc: Sven Peter <sven@svenpeter.dev>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20231011143230.1107731-1-thierry.reding@gmail.com
This commit is contained in:
Thierry Reding 2023-10-11 16:32:30 +02:00 committed by Thomas Zimmermann
parent b9f29205c0
commit c395c83aaf
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/tiny/simpledrm.c
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@ -506,7 +506,7 @@ static void simpledrm_device_detach_genpd(void *res)
return;
for (i = sdev->pwr_dom_count - 1; i >= 0; i--) {
if (!sdev->pwr_dom_links[i])
if (sdev->pwr_dom_links[i])
device_link_del(sdev->pwr_dom_links[i]);
if (!IS_ERR_OR_NULL(sdev->pwr_dom_devs[i]))
dev_pm_domain_detach(sdev->pwr_dom_devs[i], true);