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drm/ingenic: Remove bogus register write

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Commit 1bdb542da7 ("drm/ingenic: Simplify code by using hwdescs
array") caused the dma_hwdesc_phys_f{0,1} variables to be used while
uninitialized in a mmio register write, which most certainly broke the
ingenic-drm driver.

However, the very same patchset also submitted commit 6055466203
("drm/ingenic: Upload palette before frame"), which restored a correct
behaviour by doing the register writes in a different place in the code.

What's left of this, is just to remove the bogus register writes in the
probe function.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reported-by: kernel test robot <lkp@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211030100032.42066-1-paul@crapouillou.net
Acked-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Paul Cercueil
2021-10-30 11:00:32 +01:00
parent dded00395b
commit f99413e4e1
1 changed files with 0 additions and 5 deletions
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drivers/gpu/drm/ingenic/ingenic-drm-drv.c
-5
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@@ -1013,7 +1013,6 @@ static int ingenic_drm_bind(struct device *dev, bool has_components)
void __iomem *base; void __iomem *base;
long parent_rate; long parent_rate;
unsigned int i, clone_mask = 0; unsigned int i, clone_mask = 0;
dma_addr_t dma_hwdesc_phys_f0, dma_hwdesc_phys_f1;
int ret, irq; int ret, irq;
soc_info = of_device_get_match_data(dev); soc_info = of_device_get_match_data(dev);
@@ -1268,10 +1267,6 @@ static int ingenic_drm_bind(struct device *dev, bool has_components)
} }
} }
/* Set address of our DMA descriptor chain */
regmap_write(priv->map, JZ_REG_LCD_DA0, dma_hwdesc_phys_f0);
regmap_write(priv->map, JZ_REG_LCD_DA1, dma_hwdesc_phys_f1);
/* Enable OSD if available */ /* Enable OSD if available */
if (soc_info->has_osd) if (soc_info->has_osd)
regmap_write(priv->map, JZ_REG_LCD_OSDC, JZ_LCD_OSDC_OSDEN); regmap_write(priv->map, JZ_REG_LCD_OSDC, JZ_LCD_OSDC_OSDEN);