From 798e5b2a4f1dad93b193fb16bfd7e78eed22f22b Mon Sep 17 00:00:00 2001 From: =?utf8?q?Yannick=20Fertr=C3=A9?= Date: Fri, 29 Mar 2019 16:48:05 +0100 Subject: [PATCH] drm/stm: ltdc: disable hw interrupts before its handler init MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Interrupt register must be disabled before call of devm_request_threaded_irq function to avoid dummy interruption. Signed-off-by: Yannick Fertré Acked-by: Philippe Cornu Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/1553874485-31259-1-git-send-email-yannick.fertre@st.com --- drivers/gpu/drm/stm/ltdc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c index 32fd6a3..9b4883b 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -1142,6 +1142,10 @@ int ltdc_load(struct drm_device *ddev) goto err; } + /* Disable interrupts */ + reg_clear(ldev->regs, LTDC_IER, + IER_LIE | IER_RRIE | IER_FUIE | IER_TERRIE); + for (i = 0; i < MAX_IRQ; i++) { irq = platform_get_irq(pdev, i); if (irq < 0) @@ -1162,10 +1166,6 @@ int ltdc_load(struct drm_device *ddev) reset_control_deassert(rstc); } - /* Disable interrupts */ - reg_clear(ldev->regs, LTDC_IER, - IER_LIE | IER_RRIE | IER_FUIE | IER_TERRIE); - ret = ltdc_get_caps(ddev); if (ret) { DRM_ERROR("hardware identifier (0x%08x) not supported!\n", -- 2.7.4