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drm/amd/display: Slightly optimize dm_dmub_outbox1_low_irq()

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A kzalloc()+memcpy() can be optimized in a single kmemdup().
This saves a few cycles because some memory doesn't need to be zeroed.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christophe JAILLET
2023-03-21 18:58:50 +01:00
committed by Alex Deucher
parent a76766664a
commit 0e909e4fa8
1 changed files with 2 additions and 3 deletions
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5
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -820,15 +820,14 @@ static void dm_dmub_outbox1_low_irq(void *interrupt_params)
DRM_ERROR("Failed to allocate dmub_hpd_wrk");
return;
}
dmub_hpd_wrk->dmub_notify = kzalloc(sizeof(struct dmub_notification), GFP_ATOMIC);
dmub_hpd_wrk->dmub_notify = kmemdup(&notify, sizeof(struct dmub_notification),
GFP_ATOMIC);
if (!dmub_hpd_wrk->dmub_notify) {
kfree(dmub_hpd_wrk);
DRM_ERROR("Failed to allocate dmub_hpd_wrk->dmub_notify");
return;
}
INIT_WORK(&dmub_hpd_wrk->handle_hpd_work, dm_handle_hpd_work);
if (dmub_hpd_wrk->dmub_notify)
memcpy(dmub_hpd_wrk->dmub_notify, &notify, sizeof(struct dmub_notification));
dmub_hpd_wrk->adev = adev;
if (notify.type == DMUB_NOTIFICATION_HPD) {
plink = adev->dm.dc->links[notify.link_index];